MEDIUM
12th CBSE
IMPORTANT
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Autogamy can occur in a chasmogamous flower if:
(a)Pollen matures before maturity of ovule
(b)Ovules mature before maturity of pollen
(c)Both pollen and ovules mature simultaneously
(d)Both anther and stigma are of equal lengths

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Important Questions on Sexual Reproduction in Flowering Plants
MEDIUM
12th CBSE
IMPORTANT
Dioecy states

MEDIUM
12th CBSE
IMPORTANT
Choose the correct statement from the following.

MEDIUM
12th CBSE
IMPORTANT
A particular species of the plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by

MEDIUM
12th CBSE
IMPORTANT
From the situations given below, choose the one that prevents both autogamy and geitonogamy.

MEDIUM
12th CBSE
IMPORTANT
In a fertilised embryo sac, the haploid, diploid and triploid structures are

MEDIUM
12th CBSE
IMPORTANT
In an embryo sac, the cells that degenerate after fertilisation are

MEDIUM
12th CBSE
IMPORTANT
While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?

MEDIUM
12th CBSE
IMPORTANT
Scutellum is
