581.
Which one of the following has haplontic life cycle?
A
Polytrichum
B
Ustilago
C
Wheat
D
Funaria
Answer :
Ustilago
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582.
Some hyperthermophilic organisms that grow in highly acidic $$\left( {P{H_2}} \right)$$ habitats belong to the two groups:
A
Eubacteria and archaea
B
Cyanobacteria and diatoms
C
Protists and mosses
D
Liverworts and yeasts
Answer :
Eubacteria and archaea
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583.
Glossopodium is found in Selaginella
A
Root
B
Rhizophore
C
Stem
D
Leaves
Answer :
Leaves
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584.
In Selaginella, trabeculae, represent
A
Heterophylly
B
Heterospory
C
Homosprory
D
Ligulate leaf
Answer :
Heterophylly
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585.
In Pteridium cross fertilization take place due to
A
Protandry
B
Protogyny
C
Dicliny
D
Monocliny
Answer :
Protandry
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586.
In Angiosperms, microsporogenesis and megasporogenesis:
A
form gametes without further divisions
B
involve meiosis
C
occur in ovule
D
occur in anther
Answer :
involve meiosis
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587.
Fruits are not formed in gymnosperm because
A
Fertilization is absent
B
Pollination is absent
C
Seeds are not formed
D
Ovary is absent
Answer :
Ovary is absent
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588.
Ovule is morphologically equivalent to
A
Megaspore
B
Megasporangium
C
Microspore
D
Megasporophyll
Answer :
Megasporangium
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589.
Pollination of Pinus is exclusively by
A
Wind
B
Insect
C
Water
D
Birds
Answer :
Wind
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590.
Which one have maximum power of adaptation
A
Bryophyta
B
Pteridophyta
C
Gymnosperm
D
Angiosperm
Answer :
Angiosperm
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