Based on the observation of different flowers in a garden, which of the following would provide the understanding that a flower can be self-pollinating?
(1) Cleistogamous flower whose petals do not open at all.
(2) Flowers in which stamens and carpels mature at different times in the same flower.
(3) An open flower in which anthers of stamens and stigma of carpel lie at the same level.
Codes:

Correct option is C

Correct Answer: (c)
Explanation:
Cleistogamous flowers (option a) always self-pollinate because they never open.
In open flowers, if anthers and stigma are at the same level (option c), pollen easily falls on the stigma → self-pollination is possible.
But different maturation times of stamens and carpels (option b) prevent self-pollination (this is dichogamy).
Information Booster:
Cleistogamy ensures guaranteed self-pollination.
Homogamy (same level of anther & stigma) favors selfing.
Dichogamy prevents self-pollination → encourages cross-pollination.
Self-pollination maintains pure lines.
Cross-pollination increases genetic variation.
Additional Information (Incorrect Options):
(2) is incorrect because different maturation times avoid self-pollination, not support it.