Reproduction in Animals Worksheet-7

Reproduction in Animals Worksheet-7

1. The sperm head contains:

(a) Mitochondria                          (b) Nucleus

(c) Yolk                                           (d) Follicle cells

2. Implantation is:

(a) Attachment of the blastocyst to the uterine wall

(b) Release of ovum from the follicle

(c) Development of an embryo without fertilisation

(d) Formation of ova from germ cells

3. A specialised structure which provides nourishment to the foetus from the mother and collects wastes from it, passing them onto the mother is:

(a) fallopian tube                          (b) placenta

(c) cowper's gland                        (d) blastocyst

4. Which of the following are found in high concentrations in the blood that passes from the placenta to the foetus?

(a) Urea and carbon dioxide

(b) Urea and glucose

(c) Carbon dioxide and antibiotics

(d) Oxygen and amino acids

5. Cowper's glands secrete a substance to:

(a) protects sperms

(b) serve as a lubricant

(c) make the semen alkaline

(d) help the sperm in penetrating the ovum

6. Which of the following organisms reproduces asexually?

(a) Protozoa      (b) Frog             (c) Lizard           (d) Housefly

7. Ampluxory pads that help in copulation are present in:

(a) earthworm (b) frog               (c) fish                (d) butterfly

8. Milt of frog consists of:

(a) Ova                                            (b) Sperm mother cells

(c) Spermatozoa                           (d) Ova & Spermatozoa

9. Which part within the uterus prevents the mixing of the blood of the foetus with that of the mother?

(a) Umbilical cord                       (b) Uterus wall

(c) Placenta                                    (d) Water sac

10. Which statements are correct about menstrual cycle?      

I – A girl who has reached puberty will menstruate throughout her life.

II – Menstruation occurs every 28 days.

III – During every menstrual cycle, one mature ovum will be released by the ovary.

(a) I and II only                             (b) I and III only

(c) II and III only                          (d) I, II and III

Answer Key:

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