The kind of pollination in which the pollen of the same flower fall on its stigma is termed as:

1. Geitonogamy
2. Autogamy
3. Homogamy
4. Allogamy

Which of the following conditions favours self-pollination?

1. Homogamy
2. Herkogamy
3. Dichogamy
4. None of these

Which of the following is an example of an ornithophilous flower ?

1. Bougainvillea
2. Vallisneria
3. Bignonia
4. Rafflesia

Bright, showy and nectar producing flowers are needed for pollination to occur by:

1. Wind
2. Water
3. Insects
4. Elephant