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a) Draw a L.S. of a pistil showing polle...

a) Draw a L.S. of a pistil showing pollen tube entering the embryo-sac in an angiosperm and label any six parts other than stigma, and ovary.
b) Write the changes a fertilized ovule undergoes within the ovary in an angiosperm plant.

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ADDITIONAL QUESTIONS : Write the changes a fertilized ovule undergoes within the ovary in an angiospermic plant.

Draw a diagram of a mature embrryo sac of angiosperm, label its any six parts.

(a) Draw a diagram of Pistil showing pollen tube growth in angiosperm and label (i) Stigma, (ii) male gametes , (iii) micropyle and (iv) Ovule. (b) Write the function of micropyle.

(a) Draw a diagram of Pistil showing pollen tube growth in angiosperm and label (i) Stigma, (ii) male gametes , (iii) micropyle and (iv) Ovule. (b) Write the function of micropyle.

(a) Draw an L.S. of pistil showing pollen tube entering into the embryo sac. Label the following : (i) Nucellus (ii) Antipodals (iii) Synergids (iv) Micropyle (b) Write the functions of the following : (i) Synergids (ii) Micropyle

Draw a well labelled diagram of L.S of ovule showing the structure of embryo sac. Label any six parts.

(a) Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. (b) Explain the events upto double fertilization after the pollen tube enters one of the synergids in an ovule of an angiosperm .

(a) Draw a shematic labelled diagram of a fertilised embryo sac of an angiosperm. (b) Describe the stages in embryo development in a dicot plant .

(a) Draw a schematic labelled diagram of a fertilised embryo sac of an Angiosperm. (b) Describe the stage in embryo development in a dicot plant.