(a) Draw a diagrammatic sectional view of a mature
anatropous ovule and label the following parts in it: (5)
(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 gains entry into the embryo
(v) that attaches the ovule to the placenta.
(b) Describe the characteristic features of wind
(a) Draw a diagrammatic sectional view of the female reproductive
system of human and label the parts
(i) where the secondary oocytes develop
(ii) which helps in collection of ovum after ovulation
(iii) where fertilization occurs
(iv) where implantation of embryo occurs.
(b) Explain the role of pituitary and the ovarian hormones
in menstrual cycle in human females.
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