CBSE 2022 · Region 3 · Set 1 · Q15

The modes by which various organisms reproduce depend on the body design of the organisms. In asexual reproduction, a single individual parent produces offsprings without the involvement of gametes. This method is a common means of increasing the offsprings rapidly under favourable conditions. Asexual reproduction occurs mostly in unicellular organisms, some plants and certain simple multicellular animals.

(a)

State the name of the organism in which binary fission takes place in a definite orientation. Also name the disease caused by this organism.

(b)

List any two advantages of producing plants through vegetative propagation.

(c)

(i)OR(ii)

Explain the process of budding in Hydra.

(I)

a spirogyra filament matures and attains a considerable length, and

(II)

a sporangia in Rhizopus bursts on maturation ?