NCERT Class 8 Science — Chapter 3: Reproduction in animals

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?

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

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?

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

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?