Class 10th Notes Chapter 14 Reproduction

Class 10th Notes Chapter 14 Reproduction

Class 10th Notes Chapter 14 Reproduction. Class10th Biology shams note Chapter 14 Biology Chapter 14 Reproduction Exercise Question MCQs, Long question, short question, and additional multiple-choice questions. Chapter number 14 biology notes pdf scan document download.

Class 10th Notes Chapter 14 Reproduction
Class 10th Notes Chapter 14 Reproduction

UNIT14 REPRODUCTION

SHORT QUESTION ANSWER

Q1: How can vegetative method of reproduction are used to achieve better yield? Ans: Vegetative reproduction:

It is a type of reproduction in which the offspring are produced without involving the fusion of gametes (sex cells) from two parents.

Better yield:

Vegetative method of reproduction can be used to achieve better yield, because

1. The new plant that is produced has the same genetic material.

Therefore, it is possible to produce plants that have the same desired traits again and again.

Consistency:

This ensures that there is consistency maintained in the quality of the product.

Q2: Differentiate between internal and external fertilization. Which type of fertilization will ensure better chance of fusion of gametes?

Ans: Fertilization:

Fertilization is the process of sexual reproduction in which male and female gametes fuse to form zygote. Zygote is the first cell of the new offspring which divides mitotically and develops into embryo. The embryo develops into new individual.

Types:

There are two types of fertilization namely.

  1. Internal fertilization
  2. external fertilization

1. Internal fertilization:

The part of the fertilization in which the fusion of the male and female gametes takes place inside the body of the female parent.

Explanation:

  1. In internal fertilization male and female gametes fuse inside the body of female parent.
  2. Sperms are released by the male in the reproductive tract of female, which float towards the eggs and fuse to form zygote.
  3. Animals that use internal fertilization specialized in the protection of the developing egg.
  4. Reptiles and birds secrete eggs that are covered by a protective shell that is resistance to water loss and damage.
  5. In mammals the embryo is developed within the mother.
  6. This extra protection increases the chances of survival because mother supplies everything that the embryo need.

Example:

Mammals, reptiles and birds.

2. External fertilization:

The type of fertilization in which the fusion of male and female gametes takes place outside the body of female.

Explanation:

  1. External fertilization occurs mostly in the environment and requires both male and female to release their gametes into the surrounding.
  2. Fusion of the gametes takes place outside the body in water, and the new young one also develop outside the mother’s body.
  3. An advantage of external fertilization is that it results in the production of a large number of offspring.
  4. One disadvantage is that environmental hazards such as predators, current of water, etc. greatly reduce the chances of fertilization and of surviving the embryo into adulthood.

Example:

Amphibian and fish are the example animals that reproduce in this way.

Class 10th Notes Full Chapter 14 Reproduction Free Download

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