Question

Mention the conditions necessary for seed germination.

Answer 1

Germination:

1. The beginning of growth of the seed into a new plant is called germination.
2. Germination begins when the seed absorbs water, wells and bursts through the seed coat.

Conditions necessary for germination:

1. Oxygen:
   • Rapid cell division takes place in the seed germination and energy is required.
   • Oxidation is done for production and energy.
   • By the air, oxygen is supplied which facilitates the oxidation.
2. Temperature:
   • Optimum temperature is required for the germination of the seed.
   • Low temperature retards the embryonic activities whereas high temperature destroys the delicate embryo tissues.
3. Water:
   • Moisture aids by providing hydration for protoplasm's critical activities.
   • Water provides dissolved oxygen for the developing embryo.
   • It softens the seed coating, and increases seed permeability.