Define the following:
(i) parthenogenesis
(ii) Asexual reproduction
(iii) Sexual reproduction
(iv) Dioceious
(v) Monoceious
(vi) Clone

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Solution

(i) Parthenogenesis: Parthenogenesis is the process of reproduction in which a progeny is born without the fertilisation of ovum. This is the reason why this process is also known as virgin birth.

(ii) Asexual reproduction: The process of reproduction that involves only one parent and no gametes formation is called asexual reproduction.

(iii) Sexual reproduction: The reproduction that requires two parents and gametes formation is called sexual reproduction.

(iv) Dioceious: Species that have male and female gonads in different individuals are called dioceious.

(v) Monoceious: Species that have both the male and female gonads in the same individual are called monoceious (Hermaphroditic species).

(vi) Clone: Genetically identical organisms or cells are called clones.

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Question 4
Offsprings which are formed by the asexual reproduction methods have greater similarity among themselves because

(i) Asexual reproduction involves only one parent
(ii) Asexual reproduction does not involve two gametes
(iii) Asexual reproduction occurs before sexual reproduction
(iv) Asexual reproduction occurs after sexual reproduction

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)

Question 4
Offsprings which are formed by the asexual reproduction methods have greater similarity among themselves because

The offsprings formed by asexual reproduction method have greater similarity among themselves because:
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)

Q. New individuals formed by asexual method of reproduction have greater similarity among themselves because:
(i) Asexual reproduction involves only one parent.
(ii) Asexual reproduction does not involve gametes.
(iii) Asexual reproduction occurs before sexual reproduction.
(iv) Asexual reproduction occurs after sexual reproduction.

Q. Read the following statements about asexual reproduction and select the correct ones.

(i) It involves a single parent.
(ii) It is slower than sexual reproduction.
(iii) It produces progeny that are genetically identical with the parent but not with one another.
(iv) The progeny of asexual reproduction can be termed as clones.

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Define the following: (i) parthenogenesis (ii) Asexual reproduction (iii) Sexual reproduction (iv) Dioceious (v) Monoceious (vi) Clone

Define the following:
(i) parthenogenesis
(ii) Asexual reproduction
(iii) Sexual reproduction
(iv) Dioceious
(v) Monoceious
(vi) Clone