Q4 of 58 Page 1

(a) How do Leishmania and Plasmodium reproduce?

(b) State one difference in their mode of reproduction.

(a) Leishmania and Plasmodium reproduces through asexual mode of reproduction which is fission.

(b) In case of Leishmania, The fission involved is binary in which the parent atom splits into two daughter cells whereas in case of Plasmodium, multiple fission is involved in which the parent nuclei splits into many organisms in a single time.


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Name the body part where fertilization occurs in human female.

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Write the main objective of conservation of biodiversity.

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What is meant by power of a lens? Define its SI unit.

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The atomic number of an element 'X' is 20. Write

(a) its valency,


(b) whether it is a metal or non-metal,


(c) the formula of compound formed when the element 'X' reacts with an element 'Y' of atomic number 8.


Justify your answer in each case.