Reproduction in Animals Worksheet-3

Reproduction in Animals Worksheet-3

1. A woman receives her X chromosomes from

(a) Her mother only

(b) Her father only

(c) Both her mother and her father

(d) Extranuclear DNA in her mothers egg.

2. What will happen if Hydra is broken into pieces?

Given below are certain conditions. Which among them is/are correct?

(i) It will die.

(ii) It will undergo sexual reproduction.

(iii) Some fragments will form complete Hydra.

(iv) Every fragment will grow into complete Hydra.

(a) (i) only         (b) (iv) only       (c) (iii) only       (d) (iii) & (iv)

3. Read the given statements and select the correct option.

Statement 1: In humans the gamete contributed by the male determines whether the child produced will be male or female.

Statement 2: Sex in humans is dependent upon X-chromosome or Y-chromosome of the father.

(a) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1

(b) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1

(c) Statement 1 is true and statement 2 is false

(d) Both statements 1 and 2 are false.

4. Which of the following is incorrect regarding test tube baby?

(i) It is developed in a test tube.

(ii) It is developed through tissue culture method.

(iii) The ovum is fertilized externally and thereafter implanted in the uterus.

(iv) It develops from a non-fertilized egg.

(a) (i) & (iv)       (b) (ii) & (iv)     (c) (i) & (iii)      (d) (i), (ii) & (iv)

5. What is meant by asexual reproduction?

(a) New individuals are produced without the fusion of gametes

(b) New individuals involves the fusion of male and female gametes

(c) Reproduction which occurs only in plants

(d) None of these

6. Which of the following is NOT a characteristic of sexual reproduction?

(a) It involves the fusion of two reproductive cells

(b) It is practised by most organisms

(c) Fertilization may take place inside or outside the body of the female

(d) The offspring receives its characteristics from one parent only

7. Which of the following is NOT an example of asexual reproduction?

(a) Reproduction in hydra         (b) Reproduction in amoeba

(c) Reproduction in bacteria     (d) Reproduction in butterfly

8. The figure given below shows the male reproductive system.

Which part is wrongly matched with its function?

(a) P - To transport sperms

(b) Q - To let out urine or sperms

(c) R - To make reproductive gametes called ova

(d) S - To ejaculate sperms into the vagina

9. Which statement about the human female egg cell is incorrect?

(a) It is produced when a female reaches puberty

(b) The two ovaries in a female alternately produce the egg cells

(c) One egg cell is usually produced by a female every 28 days

(d) An egg cell can live in the body of a female for about a month

10. The figure below shows part of the female reproductive system during pregnancy. Identify the parts W, X, Y and Z.

(a) W-Placenta, X-Foetus, Y-Amniotic fluid, Z-Foetal membranes

(b) W-Umbilical cord, X-Embryo, Y-Uterus, Z-Vagina

(c) W-Placenta, X-Foetus, Y-Uterus, Z-Foetal membranes

(d) W-Umbilical cord, X-Zygote, Y-Amniotic fluid, Z-Cervix

Answer Key:

(1)-(c); (2)-(b); (3)-(b); (4)-(d); (5)-(a); (6)-(d); (7)-(d); (8)-(c); (9)-(d); (10)-(a)