In this article we will discuss about:- 1. Pollen Wall Adaptations 2. Harmomegathic Adaptation 3. Adaptation to Habitat 4. Adaptation to Mode of Pollination The Sporoderm structure, its chemical constituents and the diverse aperture types of pollen grains, has possibly developed as a need to adaptation in response to their respective habitats and mode of pollination. It has been seen [...]
The following points highlight the nine main chemical constituents of pollen. The chemical constituents are: 1. Major Metabolites 2. Carbohydrates 3. Mineral Content 4. Callose 5. Organic Acids 6. Amino Acids 7. Pigments 8. Vitamins 9. Hormones and Steroids. Chemical Constituent # 1. Major Metabolites: The metabolites like carbohydrates, proteins and lipids vary considerably in pollen due to (a) the [...]
In this article we will discuss about the palynotaxonomy of monocots and dicots. Palynotaxonomy of Monocots: Monocotyledoneae: Pandanales: The pollen grains are monoporate to monosulcate. Typha latifolia (Typhaceae) grains are in tetragonal tetrads, other species of Typha show monads, monoporate; exine granulate to reticulate. In Pandanaceae the grains are monoporate to monosulcate; exine psilate to echinate. In Sparganiaceae, grains are [...]