Very Short Answers - Reproduction in Animals, Science, Class 8 | Science Class 8 PDF Download

Very Short Answer Type Questions 

Q1: Name the processes which are essential for the survival of individuals.

 Ans: Digestion, circulation, excretion and respiration.

Q2: What do you mean by reproduction?

Ans: The process which is essential for the continuation of species is called reproduction.

Q3: What are different modes of reproduction?

Ans:   

• Sexual Reproduction
• Asexual Reproduction
• Fragmentation
• Budding

Q4:  Define the term sexual reproduction.

Ans: The process of reproduction in which fusion of male and female gametes takes place is called sexual reproduction.

Q5: What is male gamete?

Ans: The reproductive cell produced by male reproductive organs is called male gamete.

Male GameteQ6: What is female gamete?

Ans: The reproductive cell produced by female reproductive organs is called female gamete.

                  Female Gamete

Q7: Name the male gamete.

Ans: Sperm.
Sperm

Q8: What is name of the reproductive organ which produces sperm?

Ans:  A pair of testes.
Male Reproductive OrganQ9:  Name the female gamete.

Ans: Ovum or egg cell. Ovum

Q10:  Which organ produces the ovum?

Ans:  A pair of ovaries.

Ovaries

Q 11:  What do you mean by fertilisation?

Ans: The process of fusion of male and female gametes to produce zygote is called fertilisation.Fertilisation

Q12: Name male reproductive organs.

Ans:  A pair of testes, two sperm ducts and a penis.

Male Reproductive Organs

Q13: Write the names of female reproductive organs.

Ans: A pair of ovaries, oviducts and uterus.
Ovaries

Q14: What is the other name of oviducts?

Ans: Fallopian tubes.

Fallopian TubesQ15: How many types of fertilization are there?

Ans: There are two types of fertilization:

• External Fertilization
• Internal Fertilization

Q16: What types of fertilization takes place in humans?

Ans: Internal fertilization.

Q17: What type of fertilisation takes place in frog?

Ans: External fertilisation. 

Q18: Write full form of IVF.

 Ans: In Vitro Fertilisation.

Q19: What are test-tube babies?

 Ans: The babies born through IVF technique are called test-tube babies.

Test-Tube BabyQ20: What is embryo?

 Ans: The developing zygote having group of cells that develop into tissues and organs, is called embryo.

EmbryoQ21: Where does development of embryo take place in the body of female?

Ans: The embryo develops in the uterus of female reproductive organ. 

Q22: What is foetus?

Ans: The well developed embryo is called foetus.

Q23: Where does the development of embryo take place in those animals which undergo external fertilisation?

 Ans: Outside the female body in open

Q24: What are viviparous animals?

 Ans: The animals which give birth to young ones are called viviparous animals.

Q25: What are oviparous animals?

Ans: The animals which lay eggs are called oviparous animals.

Q26: Give some examples of viviparous animals.

 Ans: Cow, dog, cat and human beings.
 CowQ27:  Give some examples of oviparous animals.

Ans: Hen, lizards etc. and all birds.

HenQ28: What do you understand by metamorphosis?

Ans. The transformation of larva into adult through drastic changes is called metamorphosis.

Q 29: Do we also undergo metamorphosis?

 Ans: No, we do not undergo metamorphosis. 

Q30: Define the term asexual reproduction.

Ans: When only single parent is involved in reproduction, then it is called asexual reproduction.

Q31: Name the various methods of asexual reproduction in animals.

 Ans:

• Binary Fission
• Budding
• Fragmentation
• Parthenogenesis
• Regeneration 

Q32: Write an animal’s name in which asexual reproduction takes place by budding?

 Ans: Hydra.

HydraQ 33: What type of reproduction takes place in amoeba?

 Ans: Asexual reproduction by binary fission.

Amoeba