411.
Floridean starch is found in
A
Chlorophyceae
B
Rhodophyceae
C
Myxophyceae
D
Cyanophyceae
Answer :
Rhodophyceae
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412.
Seccess and dominance of vascular plants on earth is due to
A
Development of roots
B
Development of water proofing materials like cutin on surface
C
Development of conducting tissues
D
All of the above
Answer :
All of the above
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413.
Select the correct statement:
A
Gymnosperms are both homosporous and heterosporous
B
Salvinia, Ginkgo and Pinus all are gymnosperms
C
Sequoia is one of the tallest trees
D
The leaves of gymnosperms are not well adapted to extremes of climate
Answer :
Sequoia is one of the tallest trees
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414.
The gymnosperm resembles with Angiosperm in having
A
Ciliated sperms
B
Presence of ovary
C
Presence of seed
D
Presence of fruit
Answer :
Presence of seed
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415.
No Zoospoers formation has been observed in the Algae members belonging to
A
Chloropyceae
B
Xanthophyceae
C
Pheophyceae
D
Cyanophycea
Answer :
Cyanophycea
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416.
Double fertilization is exhibited by:
A
Algae
B
Fungi
C
Angiosperms
D
Gymnosperms
Answer :
Angiosperms
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417.
Male gametes are flagellated in:
A
Anabaena
B
Ectocarpus
C
Spirogyra
D
Polysiphonia
Answer :
Ectocarpus
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418.
The 'wing' of Pinus seed is derived from
A
testa
B
testa and tegmen
C
surface of ovuliferous scale
D
all the above
Answer :
surface of ovuliferous scale
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419.
Meiosis in Ulothrix take place during
A
Zoospore formation
B
Gamete formation
C
Zygospore germination
D
Zoospore germination
Answer :
Zygospore germination
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420.
Sporangia are found in fruiting structures called sporocarps in aquatic ferns, which of the follows re aquatic ferns
A
Azolla
B
Selaginell
C
Pteridium
D
Equisetum
Answer :
Azolla
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