why geitonogamy are known to produce assured seed set in the absence of pollination?
Answers
Explanation:
It is the phenomenon where flowers never open, the stigma and anthers are placed very close to each other to enhance the self-pollination. They do not depend on the external factors for the pollination. So seed setting is not dependent on the pollinators.
Answer:
Cleistogamy is the phenomenon, where flowers never open and in such flowers, only self-pollination occurs within the bud (unopened flower). Bisexual flowers which do not open at all are called cleistogamous. In such flowers, anthers and stigma lie close to each other. When the anthers dehisce in the flower buds, pollen grains come in contact with the stigma and pollination occurs. Cleistogamous flowers are not dependent on external agencies for pollination. Hence, seed setting is not dependent on pollinators.
Hence, assured seed set is possible even in the absence of pollinators when the flower is Cleistogamous.
Explanation:
Geitonogamous flowers are the flowers in which pollen are transferred from the anther to the stigma of other flower on the same plant. These flowers also need external agencies for pollination