Q8 of 40 Page 1

(a) Why are the plants raised through micropropagation termed as somaclones ?

(b) Mention two advantages of this technique.


(a) Micropropagation is the technique of producing thousands of plants in tissue culture in very short period of time.


The plants raised through micropropagation are genetically identical to the original plant from which they are grown, hence, are called somaclones.


(b) Advantages of micropropagation –


• Plants are produced in a short span of time.


• Through this technique, healthy plants can be recovered from diseased plants. The plants produced through this technique are disease and pest resistant.


More from this chapter

All 40 →
6

Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?

 7

(a) Select the homologous structures from the combinations given below :

(i) Forelimbs of whales and bats


(ii) Tuber of potato and sweet potato


(iii) Eyes of octopus and mammals


(iv) Thorns of Bougainvillea and tendrils of Cucurbita


(b) State the kind of evolution they represent.


 9

Explain the different steps involved during primary treatment phase of sewage.

 10

What is mutualism? Mention any two examples where the organisms involved are commercially exploited in agriculture

OR


List any four techniques where the principle of ex-situ conservation of biodiversity has been employed.