Question

Pollination which occurs in closed flowers is known as
A. Allogamy
B. Cleistogamy
C. Dicliny
D. Protogyny

Answer 1

Hint: Pollination is the transfer of dust grains from the anther, the male part of the flower, to the stigma, the female part. This cycle occurs prior to preparation on a regular basis. It is a crucial step in plant reproduction without which sexual reproduction would be impossible.

Complete answer:
There are two sorts of pollination, specifically, cross-and self-pollination.
In cross pollination, pollen grains are moved from the anther to the sigma of an alternate plant. Self-pollination when followed by preparation prompts the creation of offspring with heterosis or crossover power.
In contrast, self-pollination is the transfer of pollen grains from an anther to a stigma of the same flower or plant. This frequently leads to inbreeding depression, in which undesirable recessive traits manifest in the offspring.
Cleistogamy is pollination that occurs in closed flowers. It is a condition in which flowers do not open. It is a plant variation that ensures self-fertilization. The anthers and stigma of such flowers are close together. Pollen grains interact with stigma to fertilize, for example, Arachis hypogaea, when the anther dehiscence in the flower buds. It guarantees seed development even in the nonattendance of any pollinating agents. It is less expensive for the plant as there is no exorbitant nectar or scent which the plant needs to create for pollination. The hindrance of Cleistogamy is that the offspring’s created have restricted hereditary variety.

Note:
Plants and animals in pollination syndromes take advantage of each other for their own benefit. Animals take advantage of the relationship in order to ensure their reproduction and survival. They forage on the flowers for the rewards of carbohydrates (in the form of nectar) and proteins (in the form of pollen grains). The plant, on the other hand, ensures pollination and reproduction by providing incentives and other benefits like nectar, etc.