What are the various adaptation for contrivances met within angiosperms flowers which Favour cross pollination?

What are the various adaptations met within Angiospermic flowers which favors cross pollination?

Plants bears flowers which have characteristics to favour cross pollination like attractive color, smell, may produce nectar. be very light and feathery pollen grains, sticky stigma etc .

What are the various adaptations found in plants for cross pollination?

Adaptations for Cross-Pollination:

  • Uni-Sexuality of Flowers: In plants bearing unisexual flowers self-pollination is practically out of question and cross- pollination is inevitable. …
  • Self-Sterility: In some plants pollen grains have no effect and arc. …
  • Dichogamy: …
  • Heterostyly: …
  • Heikogamy:

What are the contrivances in flowers which Favour cross pollination?

Contrivances in flowers which favour cross-pollination are: Unisexuality. Different timings of maturation of androecium and gynoecium. Self-sterility.

What is the main adaptation in the flowers for self and cross pollination?

The adaptations appear in the self pollinated plants are Cleistogamy, Homogamy, Movement of floral parts, Incomplete dichogamy, safety mechanism. Cross-pollination is the transfer of pollen to stigma to another flowers of another plant same species.

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How does pollination occur in angiosperms?

For fertilization to occur in angiosperms, pollen has to be transferred to the stigma of a flower: a process known as pollination. … When the pollen of the flower is transferred to the stigma of the same flower, it is called self-pollination.

What are the features of cross pollinated flowers?

Cross-Pollination. In this type of pollination, the pollen is transferred from the anthers of one flower to the stigma of another flower. In this case, the two flowers are genetically different from each other. Cross-pollination is always dependant on another agent to cause the transfer of pollen.

Which of the following is the best contrivances to ensure self-pollination?

The major contrivances of self-pollination are: Bisexuality. Homogamy. Cleistogamy.

What do you mean by contrivances of cross pollination?

Two contrivances of cross-pollination are- Dichogamy- different times of maturation of male and female reproductive organs of a plant. Heterostyly- Different lengths of stamens and pistils which does not allow self-fertilisation.

What are the advantages of the long and feathery stigma in the flower to the plant concerned?

Long and feathery stigma helps to trap pollen grains in wind-pollination.

What are some adaptations of flowers to help attract pollinators?

Some adaptations of flowers that help attract pollinators are scent, color, and nectar.