Cleistogamous flowers are the flowers which are bisexual and never opens. Xenogamy occurs by hydrophily, anemophily, entomology and other pollinating agents. Chasmogamous flowers are open flowers which shows both self-pollination and cross pollination. Geitonogamy is type of self-pollination in which pollen of one flower get deposited on the stigma of other flower belonging to same plant. Related Theory Sometimes bisexual flowers remain closed and never open: such flowers are called cleislogamous. In such flowers, the anthers and stigma lie close to each other. When anthers dehisce, the pollen grains come in contact with stigma and pollination takes place. Such a type of pollination occurring in closed flowers is referred as cleistogamy. e.g. Arachis hypogea (Groundnut).
Which one of the following statements is correct?
NEET UG 2013 — Botany Sexual Reproduction in Flowering Plants
Which one of the following statements is correct?
Held on 30 Apr 2013 · Verified 9 Jul 2026.
Options
- A
Cleistogamous flowers are always autogamous.
- B
Xenogamy occurs only by wind pollination.
- C
Chasmogamous flowers do not open at all.
- D
Geitonogamy involves the pollen and stigma of flowers of different plants.
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