Available Answers

1. 1.

   Tick (√) the correct option:

   1. Fusion of two parental gametes is called
      1. sexual fusion
      2. fertilisation
      3. asexual reproduction
      4. none of the above
   2. Fertilisation inside the female organism:
      1. Fertilisation
      2. Female fertilisation
      3. Internal fertilisation
      4. External fertilisation
   3. Testosterone is also called
      1. hormone
      2. male sex hormone
      3. growth hormone
      4. enzymes
   4. Production of sperm is called
      1. spermatogenesis.
      2. genesis.
      3. spermagenesis.
      4. none of the above.
   5. The period from fertilisation up to the birth of the baby is called
      1. implantation.
      2. gestation.
      3. fermentation.
      4. none of the above.
   6. Which one is secreted from ovary?
      1. Progesterone
      2. Thyroxin
      3. Pancreas
      4. Adrenaline
   7. Which of the following is a hermaphrodite animal?
      1. Frog
      2. Cow
      3. Dog
      4. Earthworm
   8. In ___________, the offspring grows out of the of parent's body.
      1. Hydra
      2. Amoeba
      3. Paramecium
      4. Human
   9. In humans, fertilisation occurs in
      1. oviduct
      2. uterus
      3. ovary
      4. vagina
   10. Humans start becoming sexually mature at the ages of
       1. 10 - 16
       2. 3 - 5
       3. 13 - 18
       4. 25 - 30
2. 2.

   Fill in the blanks:

   1. The transformation of the larva into adult through drastic changes is called _________________.
   2. Fusion of sperm with ovum to form a zygote is known as _________________.
   3. The embryo gets embedded in the wall of the _________________ for further development.
   4. The reproductive organs in male include _________________ and _________________.
   5. The stage of the embryo in which all the body parts are identifiable is called _________________.
3. 3.

   Tick (√) the correct and cross (X) the wrong statement:

   1. Fertilisation in humans takes place in the uterus.
   2. An earthworm, being hermaphrodite, can reproduce on its own without the need of the partner.
   3. Testes produce two types of hormones called estrogen and progesterone.
   4. Females of all mammals produce a single ovum at a time.
   5. Improper working of reproductive organs can lead to death.
4. 4.

   Match the following:

   Column A	Column B
   1. Hydra	(a) Binary fission
   2. Earthworm	(b) Testis
   3. Testosterone	(c) Budding
   4. Amoeba	(d) Frog
   5. External fertilisation	(e) Hermaphrodite

    

5. 5.

   Find the odd one out:

   1. ovary, oviduct, kidney, uterus.
   2. Sperm, ovum, parthenogenesis, fertilisation.
   3. Testes, vas deferens, ureter, penis.
6. 6.

   What is the age of puberty in girls?