CBSE Worksheet for Chapter - 7 Reproduction in Animals Class 8

CBSE Worksheet for Chapter - 7 Reproduction in Animals Class 8

Worksheets For class 8

Find CBSE Worksheet for chapter-7 Reproduction in Animals class 8

1. CLASS-8
2. BOARD: CBSE
3. BIOLOGY Worksheet - 7
4. TOPIC: Microorganisms : Reproduction in Animals
5. For other CBSE Worksheet for class 8 Science
6. check out main page of Physics Wallah.

1. The fusion of ovum and sperm is called __________.
2. The zygote divides repeatedly to form a/an __________.
3. Animals which lay eggs are called _________ animals.
4. Amoeba reproduces by the process of _________.
5. Which hormone is responsible for secondary sexual characters in females?
   1. Testosterone
   2. Oestrogen
   3. Thyroxine
   4. Oxytocin
6. A tadpole develops into an adult frog by the process of
   1. fertilization
   2. metamorphosis
   3. embedding
   4. fission
7. Indicate whether the following statements are True (T) or False (F)
   1. Amoeba reproduces by budding
   2. Fertilization is necessary even in asexual reproduction
   3. Binary fission is a method of asexual reproduction
   4. A zygote is formed as a result of fertilization
   5. An embryo is made up of a single cell
8. Define asexual reproduction. Describe two methods of asexual reproduction in animals.
9. Give two differences between a zygote and a foetus.
10. Describe the process of fertilization in human beings.

Solutions: to worksheet-7 Topic- Reproduction in Animals

1. Fertilisation
2. Embryo
3. Oviparous
4. Fission
5. (b) Oestrogen
6. (b) Metamorphosis
7. (a) False
   1. False
   2. True
   3. True
   4. False
8. The type of reproduction in which only a single parent is involved is called asexual reproduction.
9. Two methods of Asexual Reproduction are:
10. (a) Binary fission: It takes place in simple unicellular organisms like Amoeba . In this type, the nucleus splits into two nuclei followed by the division of cytoplasm and thus forming two daughter Amoeba e.
11. (b) Budding : It takes place in Hydra , is which cells divided rapidly at a specific site and develop as an outgrowth called ‘bud’. These buds, while still attached to the parent body develops into smaller individuals. When these individuals become mature enough they detach from the parent body & develop as an independent individual.
13. In humans, the fertilistion is internal, i.e. inside the female body. The first step in the process of reproduction is the fusion of a sperm & an ovum. When sperms come in contact with an egg, one of the sperms may fuse with the egg. Such fusion of the egg & the sperm is called fertilization. During fertilistion, the nuclei of the sperm & the egg fuse to form a single nucleus. This results in the formation of fertilized egg or zygote.