91.
Insect pollinated flowers usually possess
A
Brightly coloured pollens in large quantity
B
Dry pollens with smooth surface
C
Sticky pollen and rough surface stigma
D
Light coloured scented pollen covered with nectar
Answer :
Sticky pollen and rough surface stigma
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92.
Nucellus forms which of the following part of fruit
A
Seed coat
B
Perisperm
C
Seed
D
Raphe
Answer :
Perisperm
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93.
Mechanical cracking of hard seed coat can induce germination of certain seeds this phenomenon is termed as
A
Cracking
B
Stratification
C
Scarification
D
Chilling
Answer :
Scarification
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94.
In which part of embryo maximum growth take place in hypogeal germination
A
Plumule
B
Radicle
C
Epicotyl
D
Hypocotyl
Answer :
Epicotyl
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95.
What is the direction of micropyle in anatropous ovule
A
Upward
B
Downward
C
Right
D
Left
Answer :
Downward
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96.
In which family, endothelium is formed by integuments
A
Malvaceae
B
Compositae
C
Podostemaceae
D
Crucifereae
Answer :
Compositae
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97.
How many cells or nuclei are present in male gametophyte of Capsella
A
One
B
Two
C
Three
D
Many
Answer :
Three
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98.
What type of germination is found in Capsella
A
Hypogeal
B
Epigeal
C
A and B both
D
None of the above
Answer :
Epigeal
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99.
Wind pollinated flowers are
A
small, brightly coloured, producing large number of pollen grains
B
small, producing large number of dry pollen grains
C
large producing abundant nectar and pollen
D
small, producing nectar and dry pollen
Answer :
small, producing large number of dry pollen grains
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100.
Which type of association is found in between entomophilous flower and pollinating agent
A
Mutualism
B
Commonsalism
C
Co-operation
D
Co-evolution
Answer :
Mutualism
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