81.
The edible part of Pinus chilogoza seed in
A
Pericarp
B
Female gametophyte
C
Diploid perisperm
D
Triploid endosperm
Answer :
Female gametophyte
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82.
Male gametes of bryophytes are
A
Uniflagellate
B
Mulfiglagellate
C
Biflagellate
D
Triflagellate
Answer :
Biflagellate
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83.
Prothallus of pteridium bears
A
Sporangia
B
Sex organ
C
Both sporangia and sex organ
D
None of the above
Answer :
Sex organ
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84.
The simplest sporophyte among bryophyte is of
A
Riccia
B
Marchantia
C
Antheoceros
D
Moss
Answer :
Riccia
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85.
The excurrent/conical habit of Pinus tree is caused by
A
Auxin effect on the growth of stem tip & axilary branches
B
Competition of neighbouring pine tree for sun light
C
Mutual compoetition of branches
D
Efficienty of water movement in plants
Answer :
Auxin effect on the growth of stem tip & axilary branches
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86.
Moss sporophyte is differentiated in
A
Stem & leaves
B
Root, stem and leaves
C
Rhizoids, stem & leaves
D
None of the above
Answer :
None of the above
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87.
In some algae to entire individual fuse with each other. Such a type of sexual reproduction is called
A
Isogamy
B
Anisogamy
C
Hologamy
D
Eamentangial contact
Answer :
Hologamy
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88.
Most distinct type of alternation of generatioins if demonstrated by
A
Angiosperms
B
Ferns
C
Gymnosperms
D
Bryophytes
Answer :
Ferns
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89.
Scales on margins of Riccia are arranged in
A
Basiptal order
B
Acropetal order
C
Scattered
D
Noned of the above
Answer :
Acropetal order
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90.
The prothallus of Pteridium represents
A
Sporophytic generation
B
Gametophytic generation
C
Both of the above
D
Asexual stage
Answer :
Gametophytic generation
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