Distinguish between oviparous and viviparous animals.

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(a)

In the following figures label the parts responsible for production of new plants

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(a)

Which is a better mode of reproduction, sexual or asexual? why?

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(a)

(i) What are the three clear-cut phases in the life of annual and biennial type of plants?
(ii) Why is it difficult to define these phases in perennial species of plants?

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(a)

Enumerate the differences between asexual and sexual reproduction. Describe the types of asexual reproduction exhibited by unicellular organisms.

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(a)

Rachna's father went to Kolkata where he was gifted a pot with new variety of rose. The flowers were very beautiful. On birthday of Rachna's father to bring for her the same variety of rose on his next visit to Kolkata. He smiled and advised her to raise it herself from the plants growing in his home.
Read the above passage and answer the following question:
(i)   How can father's advice help Neena to raise new seedling of rose variety present in Ranchna's home?
(ii)  Which method of reproduction is involved in this process?
(iii) Can this technique be used for commercial propagation of other ornamental plants?

5

(a)

Write a note on artificial vegetative propagation.

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(a)