B. Give short answers.
1. Define germination.
2. What are the necessary conditions for seeds to germinate ?
3. What is the role of cotyledons in the growth of a seedling?
4. What is vegetative reproduction ?
5. How does soil affect the growth of plants?
Answers
Answer:
ans:1 Germination is the process by which an organism grows from a seed or similar structure.
ans:2 Temperature, moisture, air, and light conditions must be correct for seeds to germinate.
ans:3 Cotyledons are the first part of a plant to emerge from the seed. They are formed within the seed along with the endosperm. Botanists classify plants based on the number of cotyledons they have. Cotyledons function to provide the initial growth for the plant and as an energy source.
ans:4 Vegetative reproduction is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or a specialized reproductive structure.
ans:5 Soil structure not only affects the ability of roots to grow and to supply the leaves with water and nutrients; if adverse, it also induces them to send hormonal signals that slow the growth of the shoot, even if they are currently able to take up adequate water and nutrients.
Explanation:
Hope it helps you
1. Germination refers to the method by which an associated organism grows from a seed or a reproductive structure. ... The seed absorbs water through a structure referred to as an aperture, that induces swelling of the seed till it splits open.
2.Temperature, moisture, air, and light conditions must be correct for seeds to germinate.
3.Cotyledons are the first part of a plant to emerge from the seed. They are formed within the seed along with the endosperm. Botanists classify plants based on the number of cotyledons they have. Cotyledons function to provide the initial growth for the plant and as an energy source.
4. vegetative reproduction is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or a specialized reproductive structure.
5.Vegetative reproduction, any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or grows from a specialized reproductive structure (such as a stolon, rhizome, tuber, corm, or bulb).
Hope it helped you.