LIC AAO - Planet Kingdom 1000+ MCQ [Solved] PDF Download
Thursday 9th of March 2023
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1. Which one of the following statement concerning the algae is incorrect ?
A. Most algae are photosynthetic.
B. Algae can be classified according to their pigments.
C. All algae are filamentous.
D. Spirogyra does not produce zoospores.
Answer : C
A. Most algae are photosynthetic.
B. Algae can be classified according to their pigments.
C. All algae are filamentous.
D. Spirogyra does not produce zoospores.
Answer : C
2. The following statements are associated with one class of algae. Identify the class of algae.
(i) One or more storage bodies called pyrenoids located in the chloroplasts are present in the members of this class.
(ii) They have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.
(iii) Asexual reproduction is by flagellated zoospores produced in zoosporangia.
(iv) Chlamydomonas, Volvox, Ulothrix, Spirogyra and Chara are commonly found members of this class.
A. Chlorophyceae
B. Rhodophyceae
C. Phaeophyceae
D. None of these
Answer : A
(i) One or more storage bodies called pyrenoids located in the chloroplasts are present in the members of this class.
(ii) They have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.
(iii) Asexual reproduction is by flagellated zoospores produced in zoosporangia.
(iv) Chlamydomonas, Volvox, Ulothrix, Spirogyra and Chara are commonly found members of this class.
A. Chlorophyceae
B. Rhodophyceae
C. Phaeophyceae
D. None of these
Answer : A
3. Laminaria (Kelp) and Fucus (Rock weed) are examples of
A. green algae
B. brown algae
C. red algae
D. golden brown algae
Answer : B
A. green algae
B. brown algae
C. red algae
D. golden brown algae
Answer : B
4. Which of the following, examples belongs to the same class of algae?
A. Chara, Fucus, Polysiphonia
B. Volvox, Spirogyra, Chlamydomonas
C. Porphyra, Ectocarpus, Ulothrix
D. Sargassum, Laminaria, Gracilaria
Answer : B
A. Chara, Fucus, Polysiphonia
B. Volvox, Spirogyra, Chlamydomonas
C. Porphyra, Ectocarpus, Ulothrix
D. Sargassum, Laminaria, Gracilaria
Answer : B
5. If there are 4 cells in anther, what will be the number of pollen grains?
A. 8
B. 4
C. 16
D. 12
Answer : C
A. 8
B. 4
C. 16
D. 12
Answer : C
6. What is common in all the three, Funaria, Dryopteris and Ginkgo?
A. Independent sporophyte
B. Presence of archegonia
C. Well developed vascular tissues
D. Independent gametophyte
Answer : B
A. Independent sporophyte
B. Presence of archegonia
C. Well developed vascular tissues
D. Independent gametophyte
Answer : B
7. Which of the following statement(s) is/are correct ?
(i) Agar, one of commercial products obtained from Laminaria and Sargassum are used to grow microbes and in preparations of ice-creams and jellies.
(ii) In phaeophyceae, major pigments are chl a, d and phycoerythrin.
(iii) Pteridophytes classified into four classes : Psilopsida, Lycopsida, Sphenopsida and Pteropsida.
(iv) Gemmae are green, multicellular, asexual buds, which develop in small receptacles called gemma cups located on the thalli.
A. Both (i) and (ii)
B. Both (ii) and (iv)
C. Both (iii) and (iv)
D. All of these
Answer : C
(i) Agar, one of commercial products obtained from Laminaria and Sargassum are used to grow microbes and in preparations of ice-creams and jellies.
(ii) In phaeophyceae, major pigments are chl a, d and phycoerythrin.
(iii) Pteridophytes classified into four classes : Psilopsida, Lycopsida, Sphenopsida and Pteropsida.
(iv) Gemmae are green, multicellular, asexual buds, which develop in small receptacles called gemma cups located on the thalli.
A. Both (i) and (ii)
B. Both (ii) and (iv)
C. Both (iii) and (iv)
D. All of these
Answer : C
8. Fusion of two gametes which are dissimilar in size is termed as _______.
A. isogamous
B. oogamous
C. anisogamous
D. agamous
Answer : C
A. isogamous
B. oogamous
C. anisogamous
D. agamous
Answer : C
9. Cycas and Adiantum resemble each other in having
A. seeds
B. motile sperms
C. cambium
D. vessels
Answer : B
A. seeds
B. motile sperms
C. cambium
D. vessels
Answer : B
10. Which of the following groups of plants play an important role in plant succession on bare rocks/soil ?
A. Algae
B. Bryophytes
C. Pteridophytes
D. Gymnosperms
Answer : B
A. Algae
B. Bryophytes
C. Pteridophytes
D. Gymnosperms
Answer : B
11. Select the correct match of the feature present in column I with its respective terms given in column II.
A. A-i B-ii C-iii D-iv E-v
B. A-iii B-v C-ii D-iv E-i
C. A-iii B-i C-v D-ii E-iv
D. A-v B-iv C-iii D-i E-ii
Answer : B
| Column-I | Column-II |
|---|---|
| A. Presence of tap roots | (i) Bryophyte and coralloid roots |
| B. The synergids and | (ii) Pteridophytes antipodal cells degenerates after fertilization |
| C. The food is stored as | (iii) Red algae floridean starch which is very similar to amylopectin and glycogen in structure |
| D. Presence of sporophyte | (iv) Angiosperms which is not free living but attached to the photosynthetic gametophytes and derives nourishment from it |
| E. Members of this group | (v) Gymnosperms are used for medicinal purposes, as soil binders and frequently grown as ornamentals |
A. A-i B-ii C-iii D-iv E-v
B. A-iii B-v C-ii D-iv E-i
C. A-iii B-i C-v D-ii E-iv
D. A-v B-iv C-iii D-i E-ii
Answer : B
12. Which of the following statements are incorrect?
A. Pyrenoids contain protein besides starch.
B. Sexual reproduction may be isogamous, oogamous and anisogamous in green and brown algae.
C. Some of the members of algae also occur in association with fungi (lichen) and animals (eg, on sloth bear).
D. The leaves in pteridophytes are well adapted to withstand extremes of temperature, humidity and wind.
Answer : D
A. Pyrenoids contain protein besides starch.
B. Sexual reproduction may be isogamous, oogamous and anisogamous in green and brown algae.
C. Some of the members of algae also occur in association with fungi (lichen) and animals (eg, on sloth bear).
D. The leaves in pteridophytes are well adapted to withstand extremes of temperature, humidity and wind.
Answer : D
13. The unique feature of bryophytes compared to other plant groups is that
A. they produce spores.
B. they lack vascular tissues.
C. they lack roots.
D. their sporophyte is attached to the gametophyte.
Answer : D
A. they produce spores.
B. they lack vascular tissues.
C. they lack roots.
D. their sporophyte is attached to the gametophyte.
Answer : D
14. Which of the following statements with respect to algae are correct.
(i) Fusion between one large, non-motile female gamete and a smaller, motile male gamete is termed as oogamous.
(ii) Fusion of two gametes dissimilar in size is termed as oogamous.
(iii) Fusion of two gametes similar in size is called anisogamous.
(iv) In chlorophyceae, the major pigments are chlorophyll a and b , and the food is stored as starch.
(v) In rhodophyceae, the major pigments are chlorophyll a and d , and the food is stored as mannitol.
A. (i) and (v)
B. (iii) and (v)
C. (i) and (ii)
D. (i) and (iv)
Answer : D
(i) Fusion between one large, non-motile female gamete and a smaller, motile male gamete is termed as oogamous.
(ii) Fusion of two gametes dissimilar in size is termed as oogamous.
(iii) Fusion of two gametes similar in size is called anisogamous.
(iv) In chlorophyceae, the major pigments are chlorophyll a and b , and the food is stored as starch.
(v) In rhodophyceae, the major pigments are chlorophyll a and d , and the food is stored as mannitol.
A. (i) and (v)
B. (iii) and (v)
C. (i) and (ii)
D. (i) and (iv)
Answer : D
15. Classification of plants proposed by Carolus Linnaeus was artificial because it was based on
A. only a few morphological characters.
B. evolutionary tendencies which are diverse.
C. anatomical characters which are adaptive in nature.
D. physiological traits alongwith morphological characters.
Answer : A
A. only a few morphological characters.
B. evolutionary tendencies which are diverse.
C. anatomical characters which are adaptive in nature.
D. physiological traits alongwith morphological characters.
Answer : A
16. Mosses do not have true leaves because their leaf-like structures lack
A. starch in their chloroplast.
B. vascular tissues.
C. chlorophyll.
D. cellulose in their cell walls.
Answer : B
A. starch in their chloroplast.
B. vascular tissues.
D. cellulose in their cell walls.
Answer : B
17. Which one of the following term is correctly matched with their definition in Pinus ?
A. Monoecious Male (microsporangiate) and female (megasporangiate) cones are produced on same plant.
B. Monoecious Male and female sporophylls borne on same strobilus.
C. Dioecious Male and female cones are produced on different plants.
D. Monoecious Micro and megasporocarp develop on same plant.
Answer : A
A. Monoecious Male (microsporangiate) and female (megasporangiate) cones are produced on same plant.
B. Monoecious Male and female sporophylls borne on same strobilus.
C. Dioecious Male and female cones are produced on different plants.
D. Monoecious Micro and megasporocarp develop on same plant.
Answer : A
18. Match the classes of pteridophytes given in column I with their examples given in column II and choose the correct option
A. A II; B I; C IV; D III
B. A I; B II; C IV; D III
C. A II; B I; C III; D IV
D. A II; B IV; C I; D III
Answer : A
| Column -I | Column-II |
|---|---|
| (Classes of pteridophytes) | (Examples) |
| A. Psilopsida | I. Selaginella |
| B. Lycopsida | II. Psilotum |
| C. Sphenopsida | III. Dryopteris |
| D. Pteropsida | IV. Equisetum |
A. A II; B I; C IV; D III
B. A I; B II; C IV; D III
C. A II; B I; C III; D IV
D. A II; B IV; C I; D III
Answer : A
19. _______ represent the reproductive organs amongst gymnosperms.
A. Prothallus
B. Capsules
C. Setae
D. Cones
Answer : D
A. Prothallus
B. Capsules
C. Setae
D. Cones
Answer : D
20. Read the following statements and choose the correct option.
(i) In rhodophyceae, food is stored in the form of mannitol and laminarin.
(ii) The ovules of gymnosperms are not enclosed by ovary wall.
(iii) Salvinia is heterosporous.
(iv) In the diplontic life-cycle, the free living gametophyte represents the dominant phase.
A. (ii) and (iii) are correct but (i) and (iv) are incorrect.
B. (ii) and (iv) are correct but (i) and (iii) are incorrect.
C. (iii) and (iv) are correct but (i) and (ii) are incorrect.
D. (i) and (ii) are correct but (iii) and (iv) are incorrect.
Answer : A
(i) In rhodophyceae, food is stored in the form of mannitol and laminarin.
(ii) The ovules of gymnosperms are not enclosed by ovary wall.
(iii) Salvinia is heterosporous.
(iv) In the diplontic life-cycle, the free living gametophyte represents the dominant phase.
A. (ii) and (iii) are correct but (i) and (iv) are incorrect.
B. (ii) and (iv) are correct but (i) and (iii) are incorrect.
C. (iii) and (iv) are correct but (i) and (ii) are incorrect.
D. (i) and (ii) are correct but (iii) and (iv) are incorrect.
Answer : A
21. Which of the following pteridophytes belong to class pteropsida?
A. Equisetum and Psilotum
B. Lycopodium and Adiantum
C. Selaginella and Pteris
D. Pteris and Adiantum
Answer : D
A. Equisetum and Psilotum
B. Lycopodium and Adiantum
C. Selaginella and Pteris
D. Pteris and Adiantum
Answer : D
22. Place the following groups of plants in order, beginning with those that first appeared on the earth and progressing toward those that appeared most recently in time.
A. Gymnosperms, angiosperms, ferns, moss, algae
B. Algae, moss, ferns, gymnosperms, angiosperms
C. Moss, algae, ferns, angiosperms, gymnosperms
D. Algae, ferns, angiosperms, gymnosperms, moss
Answer : B
A. Gymnosperms, angiosperms, ferns, moss, algae
B. Algae, moss, ferns, gymnosperms, angiosperms
C. Moss, algae, ferns, angiosperms, gymnosperms
D. Algae, ferns, angiosperms, gymnosperms, moss
Answer : B
23. If you are asked to classify the various algae into distinct groups then which of the following characters you should choose for the classification ?
A. Nature of habitat
B. Structural organization of thallus
C. Chemical composition of the cell wall
D. Types of pigments present in the cell.
Answer : D
A. Nature of habitat
B. Structural organization of thallus
C. Chemical composition of the cell wall
D. Types of pigments present in the cell.
Answer : D
24. Pyrenoids in green algal cells are related to
A. starch formation
B. protein storage
C. general metabolism
D. enzyme secretion
Answer : A
A. starch formation
B. protein storage
C. general metabolism
D. enzyme secretion
Answer : A
25. Phylogenetic classification system is based on the
A. morphological characters of various organisms.
B. anatomical characters of various organisms.
C. physiological characters of various organisms.
D. evolutionary relationships between the various organisms.
Answer : D
A. morphological characters of various organisms.
B. anatomical characters of various organisms.
C. physiological characters of various organisms.
D. evolutionary relationships between the various organisms.
Answer : D
26. Protonema
A. is a stage of gametophytic generation.
B. is a creeping, green, branched and develops directly from a spore.
C. produces lateral bud which forms leafy plant body.
D. All of the above
Answer : A
A. is a stage of gametophytic generation.
B. is a creeping, green, branched and develops directly from a spore.
C. produces lateral bud which forms leafy plant body.
D. All of the above
Answer : A
27. Which of the following statement(s) is/are correct?
(i) Green algae are the members of chlorophyceae.
(ii) Brown algae are found primarily in marine habitates
(iii) Some red algae are found in fresh water, mostly occur in salt water, some are in brackish water.
(iv) The food in red algae is stosed as floridean starch.
(v) Red alga may occur in both well-lighted regions close to water-surface and also at great depths in oceans where light penetration is little.
A. (i) and (v) only
B. (ii), (iii) and (iv) only
C. All of the above
D. None of the above
Answer : C
(i) Green algae are the members of chlorophyceae.
(ii) Brown algae are found primarily in marine habitates
(iii) Some red algae are found in fresh water, mostly occur in salt water, some are in brackish water.
(iv) The food in red algae is stosed as floridean starch.
(v) Red alga may occur in both well-lighted regions close to water-surface and also at great depths in oceans where light penetration is little.
A. (i) and (v) only
B. (ii), (iii) and (iv) only
C. All of the above
D. None of the above
Answer : C
28. Consider the following statements regarding gymnosperms and choose the correct option.
(i) In gymnosperms, the male and female gametophytes have an independent existence.
(ii) The multicellular female gametophyte is retained within the megasporangium.
(iii) The gymnosperms are heterosporous. Of these statements
A. (i) and (ii) are correct but (iii) is incorrect
B. (i) and (iii) are correct but (ii) is incorrect
C. (ii) and (iii) are incorrect but (i) is correct
D. (ii) and (iii) are correct but (i) is incorrect
Answer : D
(i) In gymnosperms, the male and female gametophytes have an independent existence.
(ii) The multicellular female gametophyte is retained within the megasporangium.
(iii) The gymnosperms are heterosporous. Of these statements
A. (i) and (ii) are correct but (iii) is incorrect
B. (i) and (iii) are correct but (ii) is incorrect
C. (ii) and (iii) are incorrect but (i) is correct
D. (ii) and (iii) are correct but (i) is incorrect
Answer : D
29. Which of the following statement(s) is/are correct ?
A. In angiosperms, each embryo sac has a three-celled egg apparatus one egg cell and two synergids, three antipodal cells and two polar nuclei.
B. All seed bearing plants i.e., gymnosperms and angiosperms follow dipontic life patterns of plants.
C. In gymosperms, roots in some genera have fungal association in the form of mycorrhiza (Pinus) while in some others (Cycas) small specialized roots called coralloid are associated with N2 fixing cyanobacteria.
D. All of the above
Answer : D
A. In angiosperms, each embryo sac has a three-celled egg apparatus one egg cell and two synergids, three antipodal cells and two polar nuclei.
B. All seed bearing plants i.e., gymnosperms and angiosperms follow dipontic life patterns of plants.
C. In gymosperms, roots in some genera have fungal association in the form of mycorrhiza (Pinus) while in some others (Cycas) small specialized roots called coralloid are associated with N2 fixing cyanobacteria.
D. All of the above
Answer : D
30. Which of the following branch of science is being described by the given statements ?
(i) It can easily done by using computers based on all observable characters.
(ii) Numbers and codes are assigned to all the characters and the data are then processed.
(iii) Each character is given equal weightage and at the same time hundred of characters can be considered.
A. Cytotaxonomy
B. Numerical taxonomy
C. Chemotaxonomy
D. ??-taxonomy
Answer : B
(i) It can easily done by using computers based on all observable characters.
(ii) Numbers and codes are assigned to all the characters and the data are then processed.
(iii) Each character is given equal weightage and at the same time hundred of characters can be considered.
A. Cytotaxonomy
B. Numerical taxonomy
C. Chemotaxonomy
D. ??-taxonomy
Answer : B
31. Which of the following class of algae is mostly found in salt water ?
A. Phaeophyceae
B. Rhodophyceae
C. Chlorophyceae
D. Both (a) and (b)
Answer : B
A. Phaeophyceae
B. Rhodophyceae
C. Chlorophyceae
D. Both (a) and (b)
Answer : B
32. Which of the following statements about algae is/are correct?
(i) Algae are chlorophyll bearing simple, thalloid, heterotrophic and aquatic (both fresh water and marine) organisms.
(ii) Algae reproduce by vegetative means only.
(iii) Fusion of two gametes dissimilar in size is termed as oogamous.
(iv) A few of the massive forms of algae such as kelps, form massive plant bodies.
A. Only (i)
B. Both (i) and (iii)
C. Only (iv)
D. All of these
Answer : C
(i) Algae are chlorophyll bearing simple, thalloid, heterotrophic and aquatic (both fresh water and marine) organisms.
(ii) Algae reproduce by vegetative means only.
(iii) Fusion of two gametes dissimilar in size is termed as oogamous.
(iv) A few of the massive forms of algae such as kelps, form massive plant bodies.
A. Only (i)
B. Both (i) and (iii)
C. Only (iv)
D. All of these
Answer : C
33. Consider the following statements regarding the major pigments and stored food in the different groups of algae and choose the correct option
(i) In chlorophyceae, the stored food material is starch and the major pigments are chlorophyll-a and d.
(ii) In phaeophyceae, laminarian is the stored food and major pigments are chlorophyll-a and b.
(iii) In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll-a, d and phycoerythrin.
A. (i) is correct, but (ii) and (iii) are incorrect
B. (i) and (ii) are correct, but (iii) is incorrect
C. (i) and (iii) are correct, but (ii) is incorrect
D. (iii) is correct, but (i) and (ii) are incorrect
Answer : D
(i) In chlorophyceae, the stored food material is starch and the major pigments are chlorophyll-a and d.
(ii) In phaeophyceae, laminarian is the stored food and major pigments are chlorophyll-a and b.
(iii) In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll-a, d and phycoerythrin.
A. (i) is correct, but (ii) and (iii) are incorrect
B. (i) and (ii) are correct, but (iii) is incorrect
C. (i) and (iii) are correct, but (ii) is incorrect
D. (iii) is correct, but (i) and (ii) are incorrect
Answer : D
34. The heterosporous pteridophyte belonging to the class lycopsida is
A. Selaginella
B. Psilotum
C. Equisetum
D. Pteris
Answer : A
A. Selaginella
B. Psilotum
C. Equisetum
D. Pteris
Answer : A
35. Match column-I with column-II and choose the correct option.
A. A III; B IV; C I; D II
B. A III; B IV; C II; D I
C. A IV; B III; C II; D I
D. A III; B II; C IV; D I
Answer : B
| Column-I | Column-II |
|---|---|
| A. Amphibian of the | I. Sphagnum plant kingdom |
| B. Specialized structures | II. Angiosperms in liverworts for asexual reproduction |
| C. Monocotyledons and | III. Bryophytes dicotyledons |
| D. A plant which has | IV. Gemmae capacity to holding water |
A. A III; B IV; C I; D II
B. A III; B IV; C II; D I
C. A IV; B III; C II; D I
D. A III; B II; C IV; D I
Answer : B
36. Which of the following group of plant is being described by given statements ?
(i) The plant body is thalloid.
(ii) Asexual reproduction takes place by fragmentation of thalli, or by the formation of specialized structures called gemmae.
(iii) The sporophyte is differentiated into a foot, seta and capsule.
(iv) They grow usually in moist and shady habitats.
A. Liverworts
B. Moss
C. Fern
D. Gymnosperm
Answer : A
(i) The plant body is thalloid.
(ii) Asexual reproduction takes place by fragmentation of thalli, or by the formation of specialized structures called gemmae.
(iii) The sporophyte is differentiated into a foot, seta and capsule.
(iv) They grow usually in moist and shady habitats.
A. Liverworts
B. Moss
C. Fern
D. Gymnosperm
Answer : A
37. In class phaeophyceae, the plant body is usually attached to the substratum by a A and has a stalk, the B and leaf like photosynthetic organ-the C .
A. A holdfast, B stipe, C frond
B. A stipe, B holdfast, C frond
C. A frond, B stipe, C holdfast
D. A stipe, B frond, C holdfast
Answer : A
A. A holdfast, B stipe, C frond
B. A stipe, B holdfast, C frond
C. A frond, B stipe, C holdfast
D. A stipe, B frond, C holdfast
Answer : A
38. Which of the following statement(s) is/are correct about gemmae ?
(i) These are specialised structures by which asexual reproduction take place in liverworts.
(ii) They are green, multicellular and asexual buds.
(iii) They develop in small receptacles called gemma cups.
(iv) They detach from parent body and germinate to form new individuals.
A. (i) and (ii)
B. (ii) and (iii)
C. (i), (ii) and (iii)
D. All of these
Answer : D
(i) These are specialised structures by which asexual reproduction take place in liverworts.
(ii) They are green, multicellular and asexual buds.
(iii) They develop in small receptacles called gemma cups.
(iv) They detach from parent body and germinate to form new individuals.
A. (i) and (ii)
B. (ii) and (iii)
C. (i), (ii) and (iii)
D. All of these
Answer : D
39. Match column-I with column-II and choose the correct option.
A. A I; B II; C III; D IV
B. A IV; B III; C II; D I
C. A II; B I; C III; D IV
D. A III; B II; C I; D IV
Answer : B
| Column-I | Column-II |
|---|---|
| A. Agar | I. Single cell protein, used as food supplements by space travellers |
| B. Algin | II. Red algae |
| C. Carrageen | III. Brown algae |
| D. Chlorella | IV. Gelidium, Gracilaria Spirullina |
A. A I; B II; C III; D IV
B. A IV; B III; C II; D I
C. A II; B I; C III; D IV
D. A III; B II; C I; D IV
Answer : B
40. Match the column-I with column-II and choose the correct option.
A. A II; B I; C III
B. A I; B III; C II
C. A III; B II; C I
D. A I; B II; C III
Answer : B
| Column-I | Column-II |
|---|---|
| (System of classification) | (Characteristics) |
| A. Artificial system | I. Based on few morphological of classification characters |
| B. Natural system | II. Based on evolutionary of classification relationships between the various organisms |
| C. Phylogenetic | III. Based on natural affinities system of among the organisms and classification consider external as well as internal features. |
A. A II; B I; C III
B. A I; B III; C II
C. A III; B II; C I
D. A I; B II; C III
Answer : B
41. Read the following statements and answer the question.
(i) Sporophytic generation is represented only by the one-celled zygote.
(ii) Meiosis in the zygote results in the formation of haploid spores.
(iii) The dominant, photosynthetic phase in such plants is free-living gametophyte.
(iv) Many algae such as Volvox, Spirogyra and some species of Chlamydomonas represent this pattern.
Which of the following pattern of life cycle of plant is described by the above statements ?
A. Haplontic
B. Diplontic
C. Haplo-diplontic
D. None of these
Answer : A
(i) Sporophytic generation is represented only by the one-celled zygote.
(ii) Meiosis in the zygote results in the formation of haploid spores.
(iii) The dominant, photosynthetic phase in such plants is free-living gametophyte.
(iv) Many algae such as Volvox, Spirogyra and some species of Chlamydomonas represent this pattern.
Which of the following pattern of life cycle of plant is described by the above statements ?
A. Haplontic
B. Diplontic
C. Haplo-diplontic
D. None of these
Answer : A
42. Which of the following group of plant is being described by the given statements ?
(i) They are plants in which the ovules are not enclosed by any ovary wall and remain exposed before and after fertilization.
(ii) The giant red wood tree Sequoia is one of the tallest tree species of the group.
(iii) The roots are generally tap roots.
(iv) They are heterosporous and they produce haploid microspores and megaspores.
A. Algae
B. Bryophytes
C. Gymnosperms
D. Pteridophytes
Answer : C
(i) They are plants in which the ovules are not enclosed by any ovary wall and remain exposed before and after fertilization.
(ii) The giant red wood tree Sequoia is one of the tallest tree species of the group.
(iii) The roots are generally tap roots.
(iv) They are heterosporous and they produce haploid microspores and megaspores.
A. Algae
B. Bryophytes
C. Gymnosperms
D. Pteridophytes
Answer : C
43. Flagellate isogametes and anisogametes are found in
A. Spirogyra
B. Fucus
C. Volvox
D. Chlamydomonas
Answer : D
A. Spirogyra
B. Fucus
C. Volvox
D. Chlamydomonas
Answer : D
44. Refer the statement and answer the question. They usually reproduce vegetatively by fragmentation and asexually by non - motile spores and sexually by non - moile gametes.
Identify the group of plants and its example.
A. Mosses, Funaria
B. Red algae, Polysiphonia
C. Brown algae, Laminaria
D. Pteridophytes, Selaginella
Answer : B
Identify the group of plants and its example.
A. Mosses, Funaria
B. Red algae, Polysiphonia
C. Brown algae, Laminaria
D. Pteridophytes, Selaginella
Answer : B
45. Which of the following statement(s) is/are correct about pteridophytes ?
(i) The main plant body is a sporophyte which is differentiated into true roots and leaves.
(ii) The leaves are small (microphylls) as in ferns or large (macrophylls) as in Selaginella.
(iii) Genera like Selaginella and Salvinia which produce two kinds of sporesmacro (large) and micro (small) spores, are known as heterospores.
(iv) Common examples are Funaria, Polytrichum and Sphagnum.
A. Both (i) and (ii)
B. Both (ii) and (iii)
C. Both (i) and (iii)
D. All of these
Answer : C
(i) The main plant body is a sporophyte which is differentiated into true roots and leaves.
(ii) The leaves are small (microphylls) as in ferns or large (macrophylls) as in Selaginella.
(iii) Genera like Selaginella and Salvinia which produce two kinds of sporesmacro (large) and micro (small) spores, are known as heterospores.
(iv) Common examples are Funaria, Polytrichum and Sphagnum.
A. Both (i) and (ii)
B. Both (ii) and (iii)
C. Both (i) and (iii)
D. All of these
Answer : C
46. Fruits are not formed in gymnosperms because of
A. absence of pollination.
B. absence of seed.
C. absence of fertilization.
D. absence of ovary.
Answer : D
A. absence of pollination.
B. absence of seed.
C. absence of fertilization.
D. absence of ovary.
Answer : D
47. A research student collected certain alga and found that its cells contained both chlorophyll a and chlorophyll d as well as phycoerythrin on the basis of his observation the students conclude that the alga belongs to
A. rhodophyceae
B. bacillariophyceae
C. chlorophyceae
D. phaeophyceae
Answer : A
A. rhodophyceae
B. bacillariophyceae
C. chlorophyceae
D. phaeophyceae
Answer : A
48. Statement 1: Members of phaeophyceae vary in colour from olive green to various shades of brown.
Statement 2: Phaeophyceae possess chlorophyll a, c, carotenoids and xanthophylls.
A. Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
B. Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
C. Statement -1 is true and statement - 2 is false.
D. Statement -1 is false and statement - 2 is true.
Answer : A
Statement 2: Phaeophyceae possess chlorophyll a, c, carotenoids and xanthophylls.
A. Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
B. Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
C. Statement -1 is true and statement - 2 is false.
D. Statement -1 is false and statement - 2 is true.
Answer : A
49. Which of the following statement(s) is incorrect about mosses ?
A. The predominant stage of its life cycle is the gametophyte which consists of two stages protonema and leafy stages.
B. Leafy stage are attached to the soil through unicellular and branched rhizoids.
C. Sex organs-antheridia and archegonia are produced at the apex of the leafy shoots.
D. All of the above
Answer : D
A. The predominant stage of its life cycle is the gametophyte which consists of two stages protonema and leafy stages.
B. Leafy stage are attached to the soil through unicellular and branched rhizoids.
C. Sex organs-antheridia and archegonia are produced at the apex of the leafy shoots.
D. All of the above
Answer : D
50. Deep in the tropical rain forest, a botanist discovered an unusual plant with vascular tissues, stomata, a cuticle, flagellated sperm, conelike reproductive structures bearing seeds, and an alternation-of-generations life cycle. He was very excited about this discovery because it would be rather unusual for a plant to have both
A. a cuticle and flagellated sperm.
B. vascular tissues and alternation of generations.
C. seeds and flagellated sperm.
D. alternation of generations and seeds.
Answer : C
A. a cuticle and flagellated sperm.
B. vascular tissues and alternation of generations.
C. seeds and flagellated sperm.
D. alternation of generations and seeds.
Answer : C
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