31.
Fertilization & double fertilization occurs in
A
Ovary
B
Ovule
C
Embryo sac
D
Nucellus
Answer :
Embryo sac
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32.
Chief pollinators of agricultural crops are
A
butterflies
B
bees
C
moths
D
beetles
Answer :
bees
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33.
What does the filiform apparatus do at the entrance into ovule?
A
It helps in the entry of pollen tube into a synergid
B
It prevents entry of more than one pollen tube into the embryo sac
C
It brings about opening of the pollen tube
D
It guides pollen tube from a synergid to egg
Answer :
It helps in the entry of pollen tube into a synergid
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34.
What are x-bodies in ovules
A
Two polar nuclei
B
Disintegrating tube nucleus & synergids nucleus
C
Filiform apparatus
D
Two male nuclei
Answer :
Disintegrating tube nucleus & synergids nucleus
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35.
If testa is removed from water soaked gram seed, the remaining structure is
A
Full mature embryo
B
Cotyledons with endosperm and pericarp
C
Cotyledons filled with starch
D
None of the above
Answer :
Full mature embryo
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36.
A microspore is a first cell of
A
Female gametophyte
B
Male gametophyte
C
Sporopore
D
Anther
Answer :
Male gametophyte
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37.
Raphe is
A
Part of flower
B
Funicle attached to ovule
C
Ridge formed by funiculus
D
Part of nucell
Answer :
Ridge formed by funiculus
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38.
In Capsella pollen grains are shed at
A
One celled stage
B
Three cell stage
C
Three nuclei stage
D
Two celled stage
Answer :
Two celled stage
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39.
When pollen grains of a flower are transferred to stigma of another flower on a different plant the process is called
A
Geitonogamy
B
Xenogamy
C
Autogamy
D
Homogamy
Answer :
Xenogamy
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40.
The hilum is a scar on the :
A
Fruit, where it was attached to pedicel
B
Fruit, where style was present
C
Seed, where micropyle was present
D
Seed, where funicle was attached
Answer :
Seed, where funicle was attached
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