RBI Assistant - Planet Kingdom 1000+ MCQ [Solved] PDF Download
Thursday 9th of March 2023
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1. If the cells of root in wheat plant have 42 chromosomes, then the no. of chromosome in the cell of pollen grain is
A. 14
B. 21
C. 28
D. 42
Answer : B
A. 14
B. 21
C. 28
D. 42
Answer : B
2. 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
3. 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
4. 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
5. 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
6. 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
7. Which of the following statement(s) is/are correct about angiosperms ?
(i) In angiosperms or flowering plants, the pollen grains and ovules are developed in specialised structure called flowers.
(ii) They are divided into two classes : the dicotyledons and the monocotyledons.
(iii) The male sex organ in a flower is the pistil or the carpel.
(iv) The female sex organ is the stamen.
A. Only (i)
B. Both (i) and (ii)
C. Both (ii) and (iv)
D. All of these
Answer : B
(i) In angiosperms or flowering plants, the pollen grains and ovules are developed in specialised structure called flowers.
(ii) They are divided into two classes : the dicotyledons and the monocotyledons.
(iii) The male sex organ in a flower is the pistil or the carpel.
(iv) The female sex organ is the stamen.
A. Only (i)
B. Both (i) and (ii)
C. Both (ii) and (iv)
D. All of these
Answer : B
8. Statement 1: Double fertilization is a characteristic feature of angiosperms.
Statement 2: Double fertilization involves two fusions.
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 : B
Statement 2: Double fertilization involves two fusions.
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 : B
9. 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
10. Moss peat is used as a packing material for sending flowers and live plants to distant places because
A. it reduces transpiration.
B. it serves as a disinfectant.
C. it is easily available.
D. it is hygroscopic.
Answer : D
A. it reduces transpiration.
B. it serves as a disinfectant.
C. it is easily available.
D. it is hygroscopic.
Answer : D
11. 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
12. Match the column I with column II and choose the option which shows its correct combination.
A. A III; B II; C I
B. A I; B II; C III
C. A II; B I; C III
D. A III; B I; C II
Answer : A
| Column-I | Column-II |
|---|---|
| (Pattern of life cycle in plant) | (Examples) |
| A. Haplontic | I. Bryophytes, Pteridophytes, life cycle Ectocarpus, Polysiphonia, Kelps |
| B. Diplontic | II. Seed bearing plants life cycle (Gymnosperm and Angiosperm), Fucus |
| C. Haplo-diplontic | III. Many algae (Volvox, life cycle Spirogyra) and some species of Chlamydomonas |
A. A III; B II; C I
B. A I; B II; C III
C. A II; B I; C III
D. A III; B I; C II
Answer : A
13. 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
14. 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
15. Place the following groups of plants in order, beginning with those that first appeared on the earth and progressing toward those that appeared mot 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
16. 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
17. 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
18. Angiosperms have dominated the land flora primarily because of their
A. power of adaptability in diverse habitat.
B. property of producing large number of seeds.
C. nature of self pollination.
D. domestication of man.
Answer : A
A. power of adaptability in diverse habitat.
B. property of producing large number of seeds.
C. nature of self pollination.
D. domestication of man.
Answer : A
19. 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
20. Protonema and leafy stage are the predominant stage of the life cycle of
A. moss
B. dicots
C. liverwort
D. gymnosperm
Answer : A
A. moss
B. dicots
C. liverwort
D. gymnosperm
Answer : A
21. 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
22. 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
23. 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
24. A student was given a sample to observe under the microscope. He observed and found that the sample is the most common type of spore involved in asexual reproduction in algae. Identify the spore.
A. Zoospore
B. Endospore
C. Hypnospore
D. None of the above
Answer : A
A. Zoospore
B. Endospore
C. Hypnospore
D. None of the above
Answer : A
25. 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
26. Refer the following statement(s) and identify the group of plant which is being described by given statements ?
(i) They include various mosses and liverworts that are found commonly growing in moist shaded areas in the hills.
(ii) They lack true roots, stem or leaves.
(iii) The main plant body is haploid.
(iv) They produce a multicellular body sporophyte which is not free living but attached to the photosynthetic gametophyte and derives nourishment from it.
A. Algae
B. Fungi
C. Bryophytes
D. Pteridophytes
Answer : C
(i) They include various mosses and liverworts that are found commonly growing in moist shaded areas in the hills.
(ii) They lack true roots, stem or leaves.
(iii) The main plant body is haploid.
(iv) They produce a multicellular body sporophyte which is not free living but attached to the photosynthetic gametophyte and derives nourishment from it.
A. Algae
B. Fungi
C. Bryophytes
D. Pteridophytes
Answer : C
27. 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
28. 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
29. 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
30. Which of the following statements (i) - (v) are correct ?
(i) In Equisetum, the female gametophyte is retained on the parent sporophyte.
(ii) In Ginkgo, male gametophyte is not independent.
(iii) The sporophyt in Riccia is more developed than that in Polytrichum.
(iv) Sexual reproduction in Volvox is isogamous.
A. Two
B. Three
C. Four
D. One
Answer : A
(i) In Equisetum, the female gametophyte is retained on the parent sporophyte.
(ii) In Ginkgo, male gametophyte is not independent.
(iii) The sporophyt in Riccia is more developed than that in Polytrichum.
(iv) Sexual reproduction in Volvox is isogamous.
A. Two
B. Three
C. Four
D. One
Answer : A
31. 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
32. 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
33. 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
34. 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
35. 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
36. 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
37. 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
38. 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
39. 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
40. 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
41. 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
42. 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
43. 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
44. 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
45. 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 habitat.
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 habitat.
A. Liverworts
B. Moss
C. Fern
D. Gymnosperm
Answer : A
46. 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
47. 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
48. 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
49. 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
50. 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
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