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Q. No.Conifers differ from grasses in the :
(1) production of seeds from ovules
(2) lack of xylem tracheids
(3) absence of pollen tubes
(4) formation of endosperm before fertilization
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In a moss, the sporophyte:
(1) is partially parasitic on the gametophyte
(2) produces gametes that give rise to the gametophyte
(3) arises from a spore produced from the gametophyte
(4) manufactures food for itself, as well as for the gametophyte
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In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:
(1) there is no change in success rate of fertilization
(2) there is high degree of sterility
(3) one can conclude that the plant is apomictic
(4) self fertilization is prevented
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Which one of the following statements is wrong?
(1) Algin and carrageenan are products of algae
(2) Agar-agar is obtained from Gelidium and Gracilaria
(3) Chlorella and Spirulina are used as space food
(4) Mannitol is stored food in Rhodophyceae
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Male gametes are flagellated in
1. Polysiphonia
2. Anabaena
3. Ectocarpus
4. Spirogyra
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The most primitive among the living vascular plants are the
(1) ferns
(2) brown algae
(3) mosses
(4) cycads
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Non flowering plants are included under
(1) cryptogamae
(2) phanerogamae
(3) angiosperms
(4) Both a and b
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Chlorophyll present in red algae is
(1) a, d
(2) a, b
(3) a, c
(4) b, c
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Shape of chloroplast present in Ulothrix is
(1) cup shaped
(2) girdle shaped
(3) star shaped
(4) diffused type
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This plant is used as a packing material and also forms an excellent fodder for feeding cattle.
(1) Medicago
(2) Pongamia
(3) Cratolaria
(4) All of these
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