5 Questions
What is germination?
Germination is the start of growth of a plant from a seed.
What is the function of the plumule in a seed?
The plumule will go on to become the first plant shoot.
What is the function of the radical in a seed?
The radical will form the first root.
What are cotyledons in a seed?
Cotyledons act as a food store for the new plant until it's able to carry out photosynthesis.
What is the purpose of a seed coat?
The seed coat forms a protective layer.
Study Notes
Germination and Seed Structure
- Germination: The process by which a seed begins to grow and develop into a seedling, initiated by the uptake of water and characterized by the breaking of dormancy.
Seed Components and Their Functions
- Plumule: The bud-like structure in a seed that develops into the shoot system (stem and leaves) of a seedling.
- Radical: The primary root of a seed that grows downwards and develops into the root system of a seedling.
- Cotyledons: The first leaves that emerge from a seed, responsible for absorbing light and nutrients for the developing seedling; can be either monocotyledonous (one cotyledon) or dicotyledonous (two cotyledons).
- Seed Coat: The outer protective layer of a seed, preventing water loss and mechanical damage, and controlling the exchange of gases and water vapor between the seed and the environment.
Test your knowledge on plant germination and the structure of a seed. Learn about the different components inside a seed and their roles in the growth of a plant.
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