Question

In the given image, the processes labelled as '1', '2' and '3' refers to

• A. 1- Geitonogamy
  2- Autogamy
  3- Allogamy (Cross-pollination)
• B. 1- Autogamy
  2- Geitonogamy
  3- Allogamy (Cross-pollination)
• C. 1- Allogamy (Cross-Pollination)
  2- Geitonogamy
  3- Autogamy
• D. 1- Autogamy
  2- Allogamy (Cross-pollination)
  3- Geitonogamy

Answer 1

The correct option is B 1- Autogamy

2- Geitonogamy
3- Allogamy (Cross-pollination)
Pollination is of two types- Self pollination and cross pollination. Self pollination is of two types - Autogamy and geitonogamy.
In '1', the transfer of pollen grains is happening between the anther and stigma of the same flower. This is called autogamy.
In '2', The transfer of pollen grains is happening between the anther and stigma of two different flowers, in the same plant. This is called geitonogamy.
In '3', The pollen grains are being transfered between the anther and stigma of two different flowers in two different plants. This is called cross pollination or allogamy or xenogamy