Pollen grain Notes: Definitions & Explanations PDF | Download eBooks
Study Pollen grain lecture notes PDF with biology definitions and explanation to study “What is Pollen grain?”. Study pollen grain explanation with biology terms to review biology course for online degree programs.
Pollen grain Definition:
A microspore develops into a pollen grain that consists of a male gametophyte enclosed within the pollen wall.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Pollen grain Notes:
Pollen is a fine to coarse powdery feeling substance that consists of pollen grains. These grains are male microgametophytes of seed plants, which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants, or from the male cone to the female cone of coniferous plants.
Keep Learning with Biology Notes
What is Bundle sheath?
Bundle sheath cells is a layer of cells in plant leaves and stems that forms a sheath surrounding the vascular ...
What is Differentiation?
Cellular differentiation is the process where a cell changes from one cell type to another. Usually, the cell changes to ...
What is Ethylene?
Ethylene is a gas hormone and promotes ripening of many types of fruit, leaf abscission, and the triple response in ...
What is Regulator?
Regulators regulate their bodies to remain at a relatively constant temperature. While in the past such regulators were called warm-blooded, ...
What is Translocation?
Chromosome translocation basically is a phenomenon that results in unusual rearrangement of chromosomes or an arrangement which is not present ...
What is Innate immunity?
In innate immunity, which includes barrier defenses, molecular recognition relies on a small set of receptor proteins that bind to ...