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Home > All Images > 1992 > February > 19 Feb 1992

Images Dated 19th February 1992

Choose from 9 pictures in our Images Dated 19th February 1992 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Illustration of a pollen grain Featured 19 Feb 1992 Print

Illustration of a pollen grain

Illustration of a pollen grain. Pollen are the minute male spores produced by seed plants, and serve a reproductive role. Containing the male gametes, a pollen grain consists of an outer wall (exine) which may be highly sculpted, as here. This sculpting may assist in wind, water or insect dispersal of the pollen, and is used by botanists to recognise the species of plant from which the pollen comes. Pores in the pollen wall help in water regulation and germination. The pollen is dispersed to female reproductive parts of the plant (pollination) where it grows (germinates) to fertilize the female egg. Magnification: unknown

© JOHN BAVOSI/SCIENCE PHOTO LIBRARY