Search results
6 days ago · In angiosperms, pollen is produced by the anthers of the stamens in flowers. In gymnosperms, it is formed in the microsporophylls of the microstrobili (male pollen cones). Pollen consists of one or more vegetative cells and a reproductive cell. A pollen grain itself is not the male gamete.
- Pollen Tube
Pollen grains and pollen tubes (male reproductive...
- Intine
Other articles where intine is discussed: pollen: …are an...
- Exine
Other articles where exine is discussed: pollen: …and an...
- Microsporophylls
Other articles where microsporophyll is discussed:...
- Sporopollenin
Other articles where sporopollenin is discussed: magnoliid...
- Hay Fever
hay fever, seasonally recurrent bouts of sneezing, nasal...
- Pollen Tube
What are Pollen Grains? Pollen grains are microscopic structures, which bear androecium – a male reproductive organ of a flower. The interior section of pollen grain contains cytoplasm along with the tube cell, which converts into a pollen tube and the generative cell releases the sperm nuclei. Read More: Pollination. Structure of Pollen grains
Nov 21, 2023 · Learn what a pollen grain is and how it functions. Explore what pollen contains and how pollen grains travel in angiosperm and gymnosperm pollination.
Functions of Pollen Grain Pollen grains are haploid microgametophytes that transport male reproductive cells (gametes) in a plant. The transfer of male gametes to female counterparts (ovules – female reproductive cells) in the embryo sac is their primary function.
Feb 24, 2022 · By definition in biology, pollen grain is a collection of microspores that assists with plant fertilization. Another name for pollen grain is microspore. Pollen grains are found in flowering plants, in the male structures. What produces pollen grains and where are pollen grains produced?
Aug 19, 2017 · The pollen grains are termed microgameteophytes, and consist of a sporopollenin coating which serves to protect the gameteophytes as they are transported from the stamens (male) or male cone to the pistil (female) or female cone in flowering and coniferous plants, respectively.
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 gymnosperms.
