MEDIUM
8th CBSE
IMPORTANT
Earn 100
A unicellular organism P lives in pond water. The organism P has no fixed shape, its shape keeps on changing. It moves and catches its prey with the help of organs Q which keep on appearing and disappearing. The organism P reproduces by a process R. Another organism S also reproduces by this process. Name P, Q, R and S.
Important Questions on Reproduction in Animals
EASY
8th CBSE
IMPORTANT
The animal A which is classified as an amphibian which lays eggs in pond water. The hatching of its eggs produces a tailed-form B which looks very different from the animal A. The form B then undergoes a change C and gets converted into animal A.
(a) Name (i) animal A, and (ii) form B.
EASY
8th CBSE
IMPORTANT
The animal A which is classified as an amphibian lays eggs in pond water. The hatching of its eggs produces a tailed-form B which looks very different from the animal A. The form B then undergoes a change C and gets converted into animal A.
(b) What is the change C known as?
EASY
8th CBSE
IMPORTANT
The animal A which is classified as an amphibian lays eggs in pond water. The hatching of its eggs produces a tailed-form B which looks very different from the animal A. The form B then undergoes a change C and gets converted into animal A.
(c) Name the breathing organs of A.
EASY
8th CBSE
IMPORTANT
X and Y are the two types of animals. The animals like X undergo external fertilisation whereas animals like Y undergo internal fertilisation. The animals like X lay eggs from which baby animals are hatched. On the other hand, in animals like Y, the young one develops inside the uterus of mother which then gives birth to the baby.
(a) What is the general name of animals like X?
EASY
8th CBSE
IMPORTANT
X and Y are the two types of animals. The animals like X undergo external fertilisation whereas animals like Y undergo internal fertilisation. The animals like X lay eggs from which baby animals are hatched. On the other hand, in animals like Y, the young one develops inside the uterus of mother which then gives birth to the baby.
(b) Give two examples of animals like X.
EASY
8th CBSE
IMPORTANT
X and Y are the two types of animals. The animals like X undergo external fertilisation whereas animals like Y undergo internal fertilisation. The animals like X lay eggs from which baby animals are hatched. On the other hand, in animals like Y, the young one develops inside the uterus of mother which then gives birth to the baby.
(c) What is the general name of animals like Y?
EASY
8th CBSE
IMPORTANT
X and Y are the two types of animals. The animals like X undergo external fertilisation whereas animals like Y undergo internal fertilisation. The animals like X lay eggs from which baby animals are hatched. On the other hand, in animals like Y, the young one develops inside the uterus of mother which then gives birth to the baby.
(d) Write the names of two animals like Y.
MEDIUM
8th CBSE
IMPORTANT
A is an insect which breeds in ponds of stagnant water. The egg of this insect produces a worm-like form B which is entirely different in appearance from the adult insect. The form B undergoes a change C and gets converted into insect A. The female of insect A is a carrier of protozoan D which spreads a disease in humans.
(a) What are A, B, C, and D?
