751.
The outer cell-wall of Spirogyra is made up of
A
Cellulose
B
Pectin/Pectose
C
Hemicellulose
D
Protein
Answer :
Pectin/Pectose
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752.
The antherozoids of fern are
A
Uniflgellate
B
Biflagellae
C
Quadriflagellate
D
Multiflagellate
Answer :
Multiflagellate
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753.
Ulothrix can be described as a
A
non-motile colonial alga lacking zoospores
B
filamentous alga lacking flagellated reproductive stages
C
membranous alga producing zoospores
D
filamentous alga with flagellated reproductive stages
Answer :
filamentous alga with flagellated reproductive stages
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754.
Non vascular land plants are called
A
Bryophytes
B
Pteridophytes
C
Fungi
D
Algae
Answer :
Bryophytes
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755.
Sperms of both Funaria and Dryopteris were placed near the archegonia of Dryopteris. Only sperms of Dryopteris entered the archagonia and reached the egg because of
A
Less motility of Funaria sperms which
B
Dryopteris archegonia secrete chemicals attracts dryopteris sperms only
C
Dryopteris archegonia secrete chemical to repel Funaria sperms
D
Funaria sperms are killed when mixed with Dryopteris sperms
Answer :
Dryopteris archegonia secrete chemicals attracts dryopteris sperms only
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756.
If the aerial parts of a typical pteridophyte are de stroyed by fire which plant part helps to regener ate
A
Root
B
Rhizome
C
Leaf-tip
D
Pinnule
Answer :
Rhizome
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757.
Which one of the following is heterosporous?
A
Dryopteris
B
Salvinia
C
Adiantum
D
Equisetum
Answer :
Salvinia
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758.
Spirogyra appear ladder like during
A
Lateral conjugation
B
Direct lateral conjugation
C
Scalariform conjugation
D
Semidrying condition
Answer :
Scalariform conjugation
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759.
The most imporant characteristic of a fern plant is
A
Circinate pinnules
B
Photosynthetic sprophyll
C
Compound leaves
D
Spores in sprorangia
Answer :
Photosynthetic sprophyll
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760.
The sporophytic phase in Funaria is composed of
A
Food and capsule
B
Foot, seta and capsule
C
Capsule only
D
Spore sac
Answer :
Foot, seta and capsule
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