(a) Draw a labelled schematic diagram of the transverse section of a mature anther of an angiosperm plant.
(b) Describe the characteristic features of an insect pollinated flower.

Explanation

(a)
(b) 1. Majority of insect pollinated flowers are larger , colourful , fragrant and rich in flower.
2. When flowers are small, a number of flowers are clustered into an inflorescence to make them conspicuous.
3. The flowers pollinated by flies and beetles secrete foul odours ot attracts these animals.
4. In many cases special marking occur on the petals for guiding the insect to nectar glands.
5. Some flowers provide safe place to insects for laying eggs.
6. Pollen grains are surrounded by yellow stickly substances called pollen kit.
7. Stigmas are often sticky .
8. Edible pollens are produced by many insect pollinated flowers.