An incomplete flower with only androecium is called a

1. hermaphrodite flower
2. pistillate flower
3. bisexual flower
4. staminate flower

Flower which have all the four whorls are called

1. neutral flowers
2. staminate flowers
3. incomplete flowers
4. complete flowers

In cross pollination, pollen grains from the anther of a flower are transferred to the stigma of

1. the same flower
2. another flower on the same plant
3. flower of another plant of different species
4. flower of another plant of same species

A pollen tube grows through the

1. filament
2. style
3. anther
4. ovary