You are conducting artificial hybridization on papaya and potato. Which one of them would require the step of emasculation and why? However for both you will use the process of bagging. Justify giving one reason.

(a) Draw a diagram of the adult human female reproductive system and label the different:

(i) Parts of fallopian tube

(ii) Layers of uterus

(b) Explain the events during fertilization of an ovum in humans.

OR

(a) Draw a diagrammatic sketch of a transverse section of an anther of an angiosperm. Label its different walls and the tissue forming microspore mother cells.

(b) Describe the process of microsporogenesis up to the formation of a microspore.

(c) Write the function of ‘germ pore’ in a pollen grain of an angiosperm.

In the figure given below label the following parts: male gametes, egg cell, polar nuclei, synergid and pollen tube

The generative cell of two-celled pollen divides in the pollen tube but not in three-celled pollen. Give reasons.

Give reasons as to why cell division cannot be a type of reproduction in multicellular organisms.

What are the possible types of pollinations in chasmogamous flowers? Give reasons.