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31. Give an example of insect pollinated plant.

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32. Receptive part of a carpel :

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33. Outer coat of a pollen grain :

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34. Nutritive tissue in the ovule :

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35. Why is an embryo sac diploid in agamospermy ?

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36. Draw L.S. of typical flower showing its parts.

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37.

Draw well labelled diagram of

A. Transverse section of anther.
B. Enlarged view of one microsporangium showing wall layers

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38. Describe the structure of microsporangium.

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39. Describe the development of microspore in angiosperms.

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40. Draw a diagrammatic sketch of the sectional view of a typical anatropous ovule.

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