Seeds Structure and Germination Short Answer Biology Class-9 ICSE Selina Publishers Solutions Chapter-6. Step By Step ICSE Selina Concise Solutions of Chapter-6 Seeds Structure and Germination with Exercise-6 including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.
Seeds Structure and Germination Exe-6 Short Answer Biology Class-9 ICSE Concise Selina Publishers
| Board | ICSE |
| Publications | Selina Publication |
| Subject | Biology |
| Class | 9th |
| Chapter-6 | Seeds-Structure and Germination |
| Book Name | Concise |
| Topics | Solution of C. Short Answer Type |
| Academic Session | 2023-2024 |
C. Short Answer Type
Seeds Structure and Germination Class-9 Biology Concise Solutions
Page 56
Question 1.
Define the following terms:
(a) Seed
(b) Fruits
(c) Grain
(d) Dormancy
(e) Germination
Answer:
(a) Seed: A ripened ovule, which contains embryo and has capacity to develop into a new plant is called Seed.
(b) Fruits: Enlarged and ripened ovary is called Fruit.
(c) Grain: A fruit in which the fruit wall and the seed coat is fused to form a protective layer is called Grain.
(d) Dormancy: A period of rest when the embryo is inactive inside the seed, is called Dormancy.
(e) Germination: The process of formation of a seedling from embryo is called Germination.
Question 2.
What is the difference between an embryo and a seed?
Answer:
A seed is a mature ovule after fertilization. It contains a tiny living-plant called the embryo. The embryo within the seed remains in an inactive or dormant state, until it is exposed to favourable conditions, when it germinates.
Question 3.
Germinated grams are considered highly nutritive. What is the reason for this belief?
Answer:
Germinated grams are considered highly nutritive because the cotyledon of the seed absorbs food from the endosperm, making it nutritive. It is rich in starch and its outermost layer is rich in protein.
Question 4.
Why do we not use the terms maize fruit and maize seed? What do we say instead?
Answer:
A fruit is a fertilised ovary and a seed is a fertilized matured ovule which contains an embryo or a growing plant. Maize grain is actually a fruit in which the fruit wall and the seed coat are fused together to form a protective layer. Therefore, we do not use the terms maize fruit and maize seed. Instead, we call such fruits as grains.
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