Q 1 – The number of modes by which animals reproduce are
(a) two
(b) three
(c) four
(d) none of these
Q 2 – Asexual reproduction is observed in
(a) cow
(b) buffalo
(c) sponge
(d) hen
Q 3 – The animals that produce new young ones are called
(a) viviparous
(b) oviparous
(c) both
(d) none of these
Q 4 – Internal fertilisation takes place
(a) inside male body
(b) inside female body
(c) outside female body
(d) outside male body
Q 5 – The cell formed after fertilisation is called
(a) embryo
(b) foetus
(c) zygote
(d) egg
Q 6 – The fusion of sperm and ova usually occur in the
(a) ovary
(b) uterus
(c) testes
(d) oviduct
Q 7 – Which of the following shows external fertilisation?
(a) Frog
(b) Human being
(c) Cow
(d) Hen
Q 8 – Animals exhibiting external fertilisation produce a large number of gametes. Pick the appropriate reason from the following
(a) The animals are small in size and want to produce more offsprings.
(b) Food is available in plenty in water.
(c) To ensure better chance of fertilisation.
(d) Water promotes production of large number of gametes.
Q 9 – Budding occurs in
(a) Amoeba
(b) dog
(c) Paramecium
(d) yeast
Q 10 – The male gamete is called
(a) sperm
(b) ova
(c) embryo
(d) zygote
Q 11 – Fill in the blanks
- __________ is the process that ensures continuity of life on earth.
- __________ are the cells involved in sexual reproduction.
- The animals which lay eggs are called __________.
- The animals which give birth to young ones are called __________.
- __________ is the proess of fusion of gametes.
- The process of reproduction involving fusion of male and female gametes is called __________ reproduction.
Q 11 – Fill in the blanks
- __________ is the process that ensures continuity of life on earth.
2. __________ are the cells involved in sexual reproduction.
3. The animals which lay eggs are called __________.
4. The animals which give birth to young ones are called __________.
5. __________ is the process of fusion of gametes.
6. The process of reproduction involving fusion of male and female gametes is called __________ reproduction.
Q 12 – True or false
- Zygote is an unfertilised egg.
- External fertilisation occurs in frog.
- An embryo is made up of multicells.
- Amoeba reproduces by budding.
- Fertilisation is not necessary in asexual reproduction.
- Each sperm is multicellular.
Q 13 – Match the following
Column A | Column B |
1. Ovary | (a) Female reproductive organ |
2. Fertilised egg | (b) Oviparous animal |
3. Dog | (c) Asexual reproduction |
4. Frog | (d) Viviparous animal |
5. Budding | (e) Zygote |
Q 14 – Explain two modes of reproduction with examples.
Q 15 – Explain the process of fertilisation in brief.
Q 16 – Explain briefly the external fertilisation.
Q 17 – How is an embryo developed?
Q 18 – What are sperm and ovum? Explain.
Q 19 – What do you mean by reproduction? Describe various modes of reproduction.
Q 20 – What do you mean by metamorphosis? How does metamorphosis take place in frog? Explain with a diagram.
Q 21 – Explain with a diagram the development of an embryo.
Q 22 – What is cloning? Explain how first cloned mammal was born.
Q 23 – How are babies produced through IVF technique? What are such babies called?
Q 24 – Talk to a doctor. Find out how twinning occurs. Look for any twins in your