Forum

Reaching the age of adolescence

Define adolescence.

05/11/2024

Science

8th

Reaching the age of adolescence

What is the term used for chemical secretions of endocrine glands
responsible for changes taking place in the body?

05/11/2024

Science

8th

Reproduction in animals

Differentiate between internal fertilisation and external fertilisation.

05/11/2024

Science

8th

Reproduction in animals

What is metamorphosis? Give examples.

05/11/2024

Science

8th

Reproduction in animals

In which female reproductive organ does the embryo get embedded?

05/11/2024

Science

8th

Reproduction in animals

Define asexual reproduction. Describe two methods of asexual reproduction
in animals.

05/11/2024

Science

8th

Reproduction in animals

Give two differences between a zygote and a foetus.

05/11/2024

Science

8th

Reproduction in animals

Indicate whether the following statements are True (T) or False (F).
(a) Oviparous animals give birth to young ones. ( )
(b) Each sperm is a single cell. ( )
(c) External fertilisation takes place in frog. ( )
(d) A new human individual develops from a cell called gamete. ( )
(e) Egg laid after fertilisation is made up of a single cell. ( )
(f) Amoeba reproduces by budding. ( )
(g) Fertilisation is necessary even in asexual reproduction. ( )
(h) Binary fission is a method of asexual reproduction. ( )
(i) A zygote is formed as a result of fertilisation. ( )
(j) An embryo is made up of a single cell. ( )

05/11/2024

Science

8th

Reproduction in animals

Choose the most appropriate answer.
(a) Internal fertilisation occurs
(i) in female body.
(ii) outside female body.
(iii) in male body.
(iv) outside male body.
(b) A tadpole develops into an adult frog by the process of
(i) fertilisation (ii) metamorphosis (iii) embedding (iv) budding
(c) The number of nuclei present in a zygote is
(i) none (ii) one (iii) two (iv) four

05/11/2024

Science

8th

Reproduction in animals

Describe the process of fertilisation in human beings.

05/11/2024

Science

8th