151.
How many chloroplast occur in a single cell of Spirogyra
A
One to four
B
One to eight
C
Four to eight
D
One to sixteen
Answer :
One to sixteen
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152.
How many antherozoids are produced from as Androgonial cell in Riccia
A
One
B
Two
C
Three
D
Four
Answer :
Two
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153.
How does the dehiscnece of sporogonium and dipersal of sporesoccur in Riccia
A
By internal pressure of elaters
B
By death and decay of thallus and sporogonium and external pressure on calyptra
C
By peristome teeth and seta
D
By strinking of annulus and dehiscence of capsule
Answer :
By death and decay of thallus and sporogonium and external pressure on calyptra
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154.
Prothallus of fern is
A
Dioecisou
B
Protadrous
C
Gyanandrous
D
None of the above
Answer :
Protadrous
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155.
About 90 percent of total photosynthesis in the world is caused by
A
Bryophytes
B
Algae
C
Pteridophytes
D
Angiosperms
Answer :
Algae
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156.
Polyembryony is mainly found in
A
Pteridophyta
B
Bryophyta
C
Gymnosperms
D
Angiosperms
Answer :
Gymnosperms
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157.
Sphagnum may be use as a substitute of
A
Absorbent cotton
B
Non absorbent cotton
C
Plastic
D
Polythene
Answer :
Absorbent cotton
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158.
Spores of Pteridium are
A
Haploid
B
Diploid
C
Tetraploid
D
Hexaploid
Answer :
Haploid
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159.
Nucleus of Ulothrix is found in
A
Primordial utricle
B
Central vacuole
C
Outside chloroplast
D
Periplasmic space
Answer :
Primordial utricle
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160.
In Fern stem xylem is
A
Exarch
B
Mesrch
C
Endarch
D
Polyarch
Answer :
Mesrch
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