CBSE Class 8 Science Chapter 6 Reproduction In Animals LAQs

CBSE Difference Between Sexual And Sexual Reproduction Class 8 Notes Long Answer Questions

Question 1. After observing the figure below, answer the following.

Read the following statements and label them in the figure.

1. The part that produces female gametes.
Answer: Ovary (produces gametes)

2. The tire part where the development of the baby takes place.
Answer: Uterus (development of body takes place

3. The part through which the developing embryo passes to reach the uterus.
Answer: Oviduct (Fallopian tube through which the embryo reaches the uterus)

Questions 2. Explain the future development of the embryo that would take place after it gets embedded in the uterus.
Answer: The embryo continues to develop after it gets embedded into the uterus. It divides and differentiates into three germ layers, which give rise to different body parts such as hands, legs, head, eyes, ears, etc.

His stage where all the body parts are distinct and easily identified in a developing embryo is called the foetus. After the completion of the development of the foetus, the mother gives birth to the baby.

Question 3. Consider the diagram below and answer the following question.

1. A mature egg and a sperm unite to form a zygote. In which part of the female reproductive system does a zygote form?

1. 1
2. 2
3. 3
4. 4

Answer: 1. 1

2. How many ova are usually released each month by the ovary of a woman?

1. One
2. Two
3. Fourteen
4. Twenty-four

Answer: 1. One

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3. In which part of the female reproductive system does an embryo implant?

1. 1
2. 2
3. 3
4. 4

Answer: 2. 2

Question 4. Which of these statements is true about a foetus? Circle ‘Yes’ or No for the correct response

Answer:

1. Yes
2. No
3. No

Question 5. The table shows the processes of external fertilisation and internal fertilisation

Which of these is true about external fertilisation and internal Fertilisation?

Answer: Both parents are necessary.

Question 6. The picture shows the life cycle of a moth. What can be concluded from the picture? Circle ‘Yes’ or ‘No’ for the correct response.

Answer:

1. Yes
2. Yes
3. No

Question 7. The pictures show three types of reproduction in animals

Which of those statements is true?

• Type 1 reproduction is called binary fission
• Type 2 reproduction produces two non-identical offspring.
• Type 3 reproduction involves unequal distribution of genetic materials.
• Types 1, 2, and 3 reproduction methods involve a single parent only.

Answer: 2. Type 1, 2, and 3 reproduction methods involve a single parent only.

The following questions consist of two statements:

Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true, and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
4. A is false, but R is true

Answer: 10. A-3, B-l.C-4, D-2

Question 8.

Assertion (A) During metamorphosis tadpole is transformed into a caterpillar.
Reason (R) Metamorphosis is a process in which a larva is transformed into an adult

Answer: 1. Both A and R are true, and R is the correct explanation of A

Question 9.

Assertion (A) Cloning of an animal was successfully performed for the first time by Ian Wilmut and his colleagues.
Reason (R) Cloning is the production of a different copy of a cell or any living part or a complete organism

Answer: 3. A is true, but R is false