GRE - Planet Kingdom 1000+ MCQ [Solved] PDF Download
Thursday 9th of March 2023
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1. Which one of the following is a correct statement?
A. Pteridophyte gametophyte has a protonemal and leafy stage.
B. In gymnosperms, female gametophyte is free-living.
C. Antheridiophores and archegoniophores are present in pteridophytes.
D. Origin of seed habit can be traced in pteridophytes.
Answer : D
A. Pteridophyte gametophyte has a protonemal and leafy stage.
B. In gymnosperms, female gametophyte is free-living.
C. Antheridiophores and archegoniophores are present in pteridophytes.
D. Origin of seed habit can be traced in pteridophytes.
Answer : D
2. 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
3. A universal feature of the life cycle of plants is
A. morphologically identical haploid and diploid stages.
B. genetically identical haploid and diploid stages.
C. alteration of generations between heteromorphic haploid gametophytes and diploid sporophytes.
D. none of the above
Answer : C
A. morphologically identical haploid and diploid stages.
B. genetically identical haploid and diploid stages.
C. alteration of generations between heteromorphic haploid gametophytes and diploid sporophytes.
D. none of the above
Answer : C
4. 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
5. Algin, carrageen and proteins are obtained from
A. red algae, brown algae, green algae respectively.
B. brown algae, red algae, green algae respectively.
C. red algae, green algae, brown algae respectively.
D. green algae, brown algae, red algae respectively.
Answer : B
A. red algae, brown algae, green algae respectively.
B. brown algae, red algae, green algae respectively.
C. red algae, green algae, brown algae respectively.
D. green algae, brown algae, red algae respectively.
Answer : B
6. 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
7. 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
8. 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
9. 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
10. 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
11. Which of the following pair is incorrectly matched ?
A. Chlorophyceae Major pigments are chl a and b.
B. Phaeophyceae Cell wall is made up of cellulose and algin.
C. Rhodophyceae Stored food is mannitol.
D. Chlorophyceae Cell wall is made up of cellulose.
Answer : C
A. Chlorophyceae Major pigments are chl a and b.
B. Phaeophyceae Cell wall is made up of cellulose and algin.
C. Rhodophyceae Stored food is mannitol.
D. Chlorophyceae Cell wall is made up of cellulose.
Answer : C
12. 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
13. A bryophyte differs from pteridophytes in having
A. archegonia.
B. lack of vascular tissue.
C. swimming antherozoids.
D. independent gametophytes.
Answer : B
A. archegonia.
B. lack of vascular tissue.
C. swimming antherozoids.
D. independent gametophytes.
Answer : B
14. Cytological information like chromosome number, structure, behaviour are related with
A. numerical taxonomy
B. cytotaxonomy
C. chemotaxonomy
D. all of the above
Answer : B
A. numerical taxonomy
B. cytotaxonomy
C. chemotaxonomy
D. all of the above
Answer : B
15. 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
. 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
. A frond, B stipe, C holdfast
D. A stipe, B frond, C holdfast
Answer : A
16. Which one of the following is the major difference between mosses and ferns ?
A. Ferns lack alternation of generation while mosses show the same.
B. Mosses are facultative aerobes while ferns are obligate aerobes.
C. Vascular bundles of ferns show xylem vessels while those of mosses lack it.
D. Sporophytes of ferns live much longer as compared to the sporophytes of mosses.
Answer : D
A. Ferns lack alternation of generation while mosses show the same.
B. Mosses are facultative aerobes while ferns are obligate aerobes.
C. Vascular bundles of ferns show xylem vessels while those of mosses lack it.
D. Sporophytes of ferns live much longer as compared to the sporophytes of mosses.
Answer : D
17. Which of the following statements with respect to gymnosperms and angiosperms is/are correct?
(i) The process of double fertilization is present in gymnosperms.
(ii) Angiosperms range in size from microscopic Wolffia to tall trees of Sequoia.
(iii) In gymnosperms, the seeds are not covered.
(iv) In gymnosperms, the male and female gametophytes have an independent free living existence. Of the above statements
A. (i) and (ii)
B. (iii) only
C. (ii) and (iii)
D. (iii) and (iv)
Answer : B
(i) The process of double fertilization is present in gymnosperms.
(ii) Angiosperms range in size from microscopic Wolffia to tall trees of Sequoia.
(iii) In gymnosperms, the seeds are not covered.
(iv) In gymnosperms, the male and female gametophytes have an independent free living existence. Of the above statements
A. (i) and (ii)
B. (iii) only
C. (ii) and (iii)
D. (iii) and (iv)
Answer : B
18. Chemotaxonomy is connected with
A. classification of chemicals found in plants.
B. use of phytochemical data in systematic botany.
C. application of chemicals on herbarium sheets.
D. use of statistical methods in chemical yielding plants.
Answer : B
A. classification of chemicals found in plants.
B. use of phytochemical data in systematic botany.
C. application of chemicals on herbarium sheets.
D. use of statistical methods in chemical yielding plants.
Answer : B
19. 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
20. In order to colonize land, plants needed to acquire which of the following characteristics?
A. A mechanism for moving water throughout the plant.
B. A mechanism to prevent desiccation of tissues.
C. An ability to screen ultraviolet radiation.
D. Both (b) and (c)
Answer : D
A. A mechanism for moving water throughout the plant.
B. A mechanism to prevent desiccation of tissues.
C. An ability to screen ultraviolet radiation.
D. Both (b) and (c)
Answer : D
21. 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
22. 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
23. 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
24. 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
25. 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
26. 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
27. 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
28. What is the similarity between gymnosperms and angiosperms?
A. Phloem of both have companian cells.
B. Endosperm is formed before fertilization in both.
C. Origin of ovule and seed is similar in both.
D. Both have leaves, stem and roots.
Answer : D
A. Phloem of both have companian cells.
B. Endosperm is formed before fertilization in both.
C. Origin of ovule and seed is similar in both.
D. Both have leaves, stem and roots.
Answer : D
29. 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
30. 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
31. 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 (ii)
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 (ii)
C. (i), (ii) and (iii)
D. All of these
Answer : D
32. 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
33. 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
34. In bryophytes, male and female sex organs are called ______ and ______ respectively.
A. microsporangia; macrosporangia
B. male strobili; female strobili
C. antheridia; archegonia
D. androecium; gynoecium
Answer : C
A. microsporangia; macrosporangia
B. male strobili; female strobili
C. antheridia; archegonia
D. androecium; gynoecium
Answer : C
35. 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
36. Match column-I with column-II and select the correct answer using the codes given below.
A. A V; B IV; C I; D II; E III
B. A IV; B V; C I; D II; E III
C. A IV; B I; C V; D II; E III
D. A IV; B I; C V; D III; E II
Answer : B
| Column-I | Column-II |
|---|---|
| (Group of Planet Kingdom) | (Examples) |
| A. Algae | I. Solanum tuberosum |
| B. Fungi | II. Equisetum |
| C. Angiosperm | III. Cycas |
| D. Pteridophyte | IV. Chlamydomonas |
| E. Gymnosperm | V. Rhizopus |
A. A V; B IV; C I; D II; E III
B. A IV; B V; C I; D II; E III
C. A IV; B I; C V; D II; E III
D. A IV; B I; C V; D III; E II
Answer : B
37. Mosses are of great ecological importance because of
A. its contribution to prevent soil erosion.
B. its contribution in ecological succession.
C. its capability to remove CO from the atmosphere.
D. both (a) and (b)
Answer : D
A. its contribution to prevent soil erosion.
B. its contribution in ecological succession.
C. its capability to remove CO from the atmosphere.
D. both (a) and (b)
Answer : D
38. The Natural system of classification for flowering plants was given by
A. Carolus Linnaeus
B. Bentham and Hooker
C. Engler and Prantl
D. R. H. Whittaker
Answer : B
A. Carolus Linnaeus
B. Bentham and Hooker
C. Engler and Prantl
D. R. H. Whittaker
Answer : B
39. Fern plant is a
A. haploid gametophyte
B. diploid gametophyte
C. diploid sporophyte
D. haploid sporophyte
Answer : C
A. haploid gametophyte
B. diploid gametophyte
C. diploid sporophyte
D. haploid sporophyte
Answer : C
40. 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
41. 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
42. Why rhodophyta exhibit a red colour ?
A. Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
B. The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
C. Red pigment of rhodophyta absorbs all the light waves.
D. The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Answer : B
A. Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
B. The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
C. Red pigment of rhodophyta absorbs all the light waves.
D. The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Answer : B
43. 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 III; C IV; D I
D. A II; B IV; C III; D I
Answer : C
| Column-I | Column-II |
|---|---|
| A. Smallest flowing plant | I. Eucalyptus |
| B. Male sex organ in | II. Wolffia flowering plant |
| C. Female sex organ | III. Stamen in flowering plant |
| D. Tallest tree | IV. Pistil |
A. A I; B II; C III; D IV
B. A IV; B III; C II; D I
C. A II; B III; C IV; D I
D. A II; B IV; C III; D I
Answer : C
44. Which of the following class of algae is rarely found in fresh water ?
A. Chlorophyceae
B. Phaeophyceae
C. Rhodophyceae
D. Both (a) and (b)
Answer : B
A. Chlorophyceae
B. Phaeophyceae
C. Rhodophyceae
D. Both (a) and (b)
Answer : B
45. 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
46. Match column-I with column-II and choose the correct option.
A. A III; B IV; C I; D II
B. A IV; B III; C I; D II
C. A IV; B III; C II; D I
D. A IV; B I; C III; D II
Answer : A
| Column-I | Column-II |
|---|---|
| A. Phaeophyceae | I. Have an elaborate mechanism of spore dispersal |
| B. Rhodophyceae | II. first terrestrial plant with vascular tissue-phloem and xylem |
| C. Mosses | III. Asexual reproduction by biflagellate zoosposes |
| D. Pteridophytes | IV. Polysiphonia, Porphyra, Gracilaria |
A. A III; B IV; C I; D II
B. A IV; B III; C I; D II
C. A IV; B III; C II; D I
D. A IV; B I; C III; D II
Answer : A
47. In angiosperms, a mature male gametophyte is derived from a pollen mother cell by
A. three mitotic divisions.
B. one meiotic and two mitotic divisions.
C. two meiotic divisions.
D. a single meiotic division.
Answer : B
A. three mitotic divisions.
B. one meiotic and two mitotic divisions.
C. two meiotic divisions.
D. a single meiotic division.
Answer : B
48. 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
49. 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
50. 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
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