What is external fertilisation ?
Solution : The fusion of a male and a female gamete takes place outside the body of the female is called external fertilisation. It is very common in aquatic animals such as fish, starfish, etc.
Reproduction in Plants
What is an internal fertilisation ?
Solution : Fertilisation which takes place inside the female body is called internal fertilisation. Internal fertilisationoccurs in many animals including humans, cows, dogs and hens.
What is fertilisation ?
Solution : fusion of the female gamete (egg ) and the male gamete ( sperm ) is called fertilisation,
Benefit of dispersal of seeds
Seed dispersal helps the plants to (i) prevent overcrowding, (ii) avoid competition for sunlight, water and minerals and (iii) invade new habitats
What is cross-pollination ?
In cross-pollination, pollen grains are transferred from the anther of one flower to the stigma of another flower of the same kind.
What is self pollination?
self-pollination:- pollen grains are transferred from the anther to the stigma of the same flower.
Types of pollination
Pollination is of two types, self-pollination and cross-pollination. In self-pollination, pollen grains are transferred from the anther to the stigma of the same flower. In cross-pollination, pollen grains are transferred from the anther of one flower to the stigma of another flower the same kind.
What is SEED DISPERSAL ?
In nature same kind of plants grow at different places. This happens because seeds are dispersed to different places.Sometimes after a walk through a forest or a field or a park, you may have found seeds or fruits sticking to your clothes. There would be severe competition for sunlight, water, mineral sand space. As a …
What is seed ?
The mature ovule is called seed .
What is fruits ?
The ripened ovary is called fruits.