Q. 94.8( 4 Votes )
In the figure given below the plant bears two different types of flowers marked ‘A’ and ‘B’. Identify the types of flowers and state the type of pollination that will occur in them.
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(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.
(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.Biology - Board Papers
In the figure given below label the following parts: male gametes, egg cell, polar nuclei, synergid and pollen tube
Biology - Exemplar
The generative cell of two-celled pollen divides in the pollen tube but not in three-celled pollen. Give reasons.Biology - Exemplar