Match the Column1 with Column2:

1-d,2-b,3-c,4-a

 The correct answer is option (1) -1-d,2-b,3-c,4-a

Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar. When the flowers are small, a number of flowers are clustered into an inflorescence to make them conspicuous. Animals are attracted to flowers by colour and/or fragrance.

Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocotyledons. Water is a regular mode of transport for the male gametes among the lower plant groups such as algae, bryophytes and pteridophytes. Both wind and water pollinated flowers are not very colourful and do not produce nectar. 

Pollination by wind is more common amongst abiotic pollinations. Wind pollination also requires that the pollen grains are light and non-sticky so that they can be transported in wind currents. They often possess well-exposed stamens (so that the pollens are easily dispersed into wind currents,and large often-feathery stigma to easily trap air-borne pollen grains.

The flowers pollinated by flies and beetles secrete foul odours to attract these animals.