Long Answer Type
Short Answer TypeName the parts of an angiosperm flower in which development of male and female gametophyte take place.
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Long Answer Type(a) Draw a diagrammatic sectional view of a mature anatropous ovule and label the following parts in it:
(i) that develops into seed coat.
(ii) that develops into an embryo after fertilization.
(iii) that develops into an endosperm in an albuminous seed.
(iv) through which the pollen tube grains entry into the embryo sac.
(v) that attaches the ovule to the placenta.
(b) Describe the characteristic features of wind pollinated flowers.Mature anatropous ovule
(b) Characteristics of wind pollinated flowers:
(i) Large number of pollen grains are produced.
(ii) Pollen grains are light and non-sticky.
(iii) Well exposed stamens so that pollen grain are easily dispersed.
(iv) Large and feathery stigma to trap pollen grains.
Short Answer TypeMention the unique flowering phenomenon exhibited by Strobilanthus kunthiana (neelakuranaji).
Where is sporopollenin present in plants? State its significance with reference to its chemical nature.
Differentiate between albuminous and non-albuminous seeds, giving one example of each.
Switch
