EASY
12th ICSE
IMPORTANT
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The fleshy whitish structure present on micropylar end of seed.

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Important Questions on Sexual Reproduction in Flowering Plants

MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 27
Both male and female gametes are non-motile in flowering plants, so they have to be brought together for fertilization to occur. Write the various ways by which this is achieved.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 28
Differentiate between cleistogamous flower and chasmogamous flower.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 29
How do flowers reward their insect pollinators? Explain.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 30
In the majority of angiosperms, the zygote divides by an asymmetric mitotic division and generates two cells. Discuss the fates of these two cells.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 31
Scutellum is the single cotyledon found in the monocot embryo only. Explain.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 32
Micropyle is the single cotyledon found on the seed coat. Do you agree? Also state its function.
HARD
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 33
Trace the events taking place in a flower from the time of pollen grain entry up to the completion of fertilization.
EASY
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 2 - Sexual Reproduction in Flowering Plants>Chapter Practice>Q 34
Name the nuclei that fuse to form PEN.