Reasons for choosing Garden pea plant as the experimental material by Mendel are:

1. Pea plants have many distinct varieties with sharp contrasting characteristics. For example, colour and shape of pods and seeds.

2. Pea plants are monoecious with bisexual flowers that enclose the reproductive organs until fertilisation. This conditions favours self-pollination and also makes it easier to obtain pureline varities for several generations.

3. Pea plants complete their life cycle in one season. This enables to study several generations within a short period of time.

4. Each plant produces large number of seeds in a single generation.

5. Flowers of pea plants are adequate in size and easy to handle.