Reproduction in animals Worksheet-7

Reproduction in animals Worksheet-7


Comprehension Based Questions:


Fusion of the egg and the sperm is called fertilization. During fertilization, the nuclei of the sperm and the egg fuse to form a single nucleus. This results in the formation of a fertilized egg or zygote. The new individual inherits some characteristics from the mother and some from the father. Fertilization which takes place inside the female body is called internal fertilization for example; humans, cows. Fertilization in which the fusion of a male and a female gamete takes place outside the body of the female is called external fertilization. After fertilization, the zygote divides repeatedly and travels down the oviduct. As it travels down, many protective layers are formed around it.

  1. What happens during fertilization?

(A) Formation of gametes          (B) Fusion of gametes

(C) Development of embryo      (D) Formation of foetus


  1. _______ nucleus is/are present in a zygote.

(A) One              (B) Two              (C) Three           (D) Four

(E) None


  1. What is another term for fertilized egg?

(A) Zygote         (B) Embryo       (C) Foetus          (D) Gamete

(E) All


  1. The new individual inherit characteristics from both mother and father because

(A) Zygote is fusion of male and female gametes

(B) Gametes are produced in sex organs

(C) Sperm is male gamete

(D) Ova is female gamete


  1. Internal fertilization means-

(A) Fertilization inside male body

(B) Fertilization inside female body

(C) Both

(D) None


  1. What happens in zygote after fertilization?

(A) It decreases in size                (B) It increases n size

(C) It starts dividing                    (D) All


  1. Which type of fertilization is observed in humans?

(A) Internal fertilization

(B) External fertilization

(C) Depends upon the conditions

(D) None



  1. Fusion of gametes

  2. One

  3. Zygote

  4. Zygote is fusion of male and female gametes

  5. Fertilization inside female body

  6. It starts dividing

  7. Internal fertilization