With reference to the development of the embryo in humans, consider the following statements: 1. The embryo gets embedded in the wall of the uterus for further development. 2. The stage where body parts like hands and eyes can be identified is called the zygote. 3. The embryo completes its full development into a baby within the fallopian tube. Which of the statements given above is/are correct?

The correct option is (a). Explanation In human sexual reproduction, the fusion of gametes leads to the formation of a zygote. This single cell undergoes repeated division to form an embryo, which travels to the uterus for implantation and subsequent development into a foetus. Statement-wise Analysis - Statement 1 is Correct: After fertilization occurs in the fallopian tube, the zygote divides repeatedly to form a ball of cells known as the embryo. The embryo moves down to the uterus and embeds itself in the thick, vascular wall of the uterus. This process is called implantation, which is essential for further growth and development. - Statement 2 is Incorrect: The zygote is the unicellular product of fertilization. As the embryo continues to grow, cells differentiate into tissues and organs. The stage of development where specific body parts (such as hands, legs, eyes, etc.) can be clearly identified is called a foetus. - Statement 3 is Incorrect: The fallopian tube (oviduct) is the site where fertilization takes place. However, the embryo does not complete its development there. It migrates to the uterus (womb), where the foetus develops fully over the gestation period until birth. Key Takeaway: The developmental sequence in humans is Zygote → Embryo → Foetus. Fertilization occurs in the fallopian tube, while implantation and full fetal development occur in the uterus.

NCERT Class 8 Science — Chapter 3: Reproduction in animals

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With reference to the development of the embryo in humans, consider the following statements:

The embryo gets embedded in the wall of the uterus for further development.
The stage where body parts like hands and eyes can be identified is called the zygote.
The embryo completes its full development into a baby within the fallopian tube.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 only
B2 only
C1 and 3 only
D1, 2 and 3

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Solution

The correct option is (a).

Explanation

In human sexual reproduction, the fusion of gametes leads to the formation of a zygote. This single cell undergoes repeated division to form an embryo, which travels to the uterus for implantation and subsequent development into a foetus.

Statement-wise Analysis

Statement 1 is Correct: After fertilization occurs in the fallopian tube, the zygote divides repeatedly to form a ball of cells known as the embryo. The embryo moves down to the uterus and embeds itself in the thick, vascular wall of the uterus. This process is called implantation, which is essential for further growth and development.
Statement 2 is Incorrect: The zygote is the unicellular product of fertilization. As the embryo continues to grow, cells differentiate into tissues and organs. The stage of development where specific body parts (such as hands, legs, eyes, etc.) can be clearly identified is called a foetus.
Statement 3 is Incorrect: The fallopian tube (oviduct) is the site where fertilization takes place. However, the embryo does not complete its development there. It migrates to the uterus (womb), where the foetus develops fully over the gestation period until birth.

Key Takeaway: The developmental sequence in humans is Zygote → Embryo → Foetus. Fertilization occurs in the fallopian tube, while implantation and full fetal development occur in the uterus.

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More from Chapter 3: Reproduction in animals

In the context of human reproduction, what is the primary distinction between a zygote and a foetus?

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In the context of hen reproduction, consider the following statements: 1. Hens undergo internal fertilisation. 2. The hard shell of the egg is formed after the egg is laid. 3. The embryo takes about 3 weeks to develop into a chick. Which of the statements given above is/are correct?

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With reference to the development of a chick, which one of the following statements is correct?

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Consider the following statements distinguishing Viviparous and Oviparous animals: 1. Viviparous animals are those that lay eggs. 2. Oviparous animals lay eggs which later develop into young ones. 3. Frogs and hens are examples of oviparous animals. Which of the statements given above is/are correct?

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Which of the following pairs is correctly matched?

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The correct option is (a).

Explanation

Statement-wise Analysis

Statement 1 is Correct: After fertilization occurs in the fallopian tube, the zygote divides repeatedly to form a ball of cells known as the embryo. The embryo moves down to the uterus and embeds itself in the thick, vascular wall of the uterus. This process is called implantation, which is essential for further growth and development.
Statement 2 is Incorrect: The zygote is the unicellular product of fertilization. As the embryo continues to grow, cells differentiate into tissues and organs. The stage of development where specific body parts (such as hands, legs, eyes, etc.) can be clearly identified is called a foetus.
Statement 3 is Incorrect: The fallopian tube (oviduct) is the site where fertilization takes place. However, the embryo does not complete its development there. It migrates to the uterus (womb), where the foetus develops fully over the gestation period until birth.