281.
How many cotyledons are present in embryo of Selaginella A
Two cotyledons
B
One cotyledon
C
Many cotyledons
D
None of the above
Answer :
Two cotyledons
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282.
A research student collected certain algae both as and found that its cells contained both chlorophyll $$a$$ and chlorophyll $$b$$ as well as phycoerythrin. The alga belongs to A
Rhodophyceae
B
Bacillariophyceae
C
Chlorophyceae
D
Phaeophyceae
Answer :
Rhodophyceae
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283.
Chloroplast are present in the spore of A
Rhizopus
B
Funaria
C
Dryopteris
D
Penicillium
Answer :
Funaria
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284.
In the life cycle of Riccia from 20 Androgonial cells, how many antherozoids willb e formed A
10
B
20
C
40
D
80
Answer :
40
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285.
Bryophytes can be separated from algae because they A
are thalloid forms
B
have no conducting tissue
C
possess archegonia with outer layer of sterile cells
D
contain chloroplasts in their cells
Answer :
possess archegonia with outer layer of sterile cells
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286.
Chlorophyll 'a' and chlorophyll 'd' found in A
Rhdophyta
B
Phaeophyta
C
Chrosophyta
D
Myxophyt
Answer :
Rhdophyta
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287.
Which structure is developed from microspore of the Selaginella A
Male gametophyte
B
Female gametophyte
C
Male sporophyte
D
Female sprophyte
Answer :
Male gametophyte
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288.
Flagellated stages are absent in A
Ulothrix
B
Albugo
C
Spirogyra
D
Chlamydomnas
Answer :
Spirogyra
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289.
What is the most common method of vegetative reproduction in Riccia A
Fragmentation
B
Formation of adventitious bud s
C
Progressive death and decay of older parts of the thallus
D
Tuber formation
Answer :
Progressive death and decay of older parts of the thallus
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290.
Pteridophyta differs from bryophyta in having A
Vascular tissue
B
Archegonia
C
Alternation of generations
D
Motile sperm
Answer :
Vascular tissue
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