181.
Oogonia of Thallophyta differs with archegonia of bryophyta
A
Being multi cellular
B
Being jacketed
C
Being stalked
D
Being unicellular and jacket less
Answer :
Being unicellular and jacket less
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182.
Besides paddy fields cyanobacteria are also found inside vegetative part of:
A
Cycas
B
Equisetum
C
Psilotum
D
Pinus
Answer :
Cycas
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183.
The assimilatory tissue of Riccia thallus is made up of
A
Assimilatory fimlaments
B
Spongy mesophyll
C
Palisade tissue
D
B and C both
Answer :
Assimilatory fimlaments
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184.
Which of the following is not heterosporous
A
Selaginella
B
Pinus
C
Pteridium
D
Cycas
Answer :
Pteridium
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185.
The Pteridium plant is
A
Homosporous
B
Heterosporous
C
None of the above
D
May be Heterosporous or Homosporous
Answer :
Homosporous
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186.
The xylem of stele of Pteridium is made up of
A
Vessels
B
Tracheids
C
Tracheids and xylem parenchyma
D
None of the above
Answer :
Tracheids and xylem parenchyma
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187.
An order of development of structure successively towards the apex, the oldest at the base and younget nearest the apex called as
A
Acropetal
B
Basipetal
C
A and B both
D
None of the above
Answer :
Acropetal
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188.
Independent alternation of generation foundin
A
Pteridophyta
B
Spermatophyta
C
Thallophyta
D
Bryophyta
Answer :
Pteridophyta
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189.
Parthenogenesis in Ulotrhix forms a resting structure called
A
Zygospore
B
Azygospore
C
Hypnospore
D
Zoospores
Answer :
Azygospore
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190.
The number of megaspore/megaspores in each megasporangium of Selaginella rupestris is /are
A
One
B
Two
C
Three
D
Four
Answer :
One
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