What is the difference between a spore and a pollen grain?
Reproductive wise.. I already know about their structure
- blossomLv 51 decade agoFavourite answer
In biology, a spore is a reproductive structure that is adapted for dispersal and surviving for extended periods of time in unfavorable conditions. Spores form part of the life cycles of many plants, algae, fungi and some protozoans. A chief difference between spores and seeds as dispersal units is that spores have very little stored food resources compared with seeds.
Spores are usually haploid and unicellular and are produced by meiosis in the sporophyte. Once conditions are favorable, the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes.
Pollen is a fine to coarse powder consisting of microgametophytes (pollen grains), which produce the male gametes (sperm cells) of seed plants. A hard coat covering the pollen grain protects the sperm cells during the process of their movement between the stamens of the flower to the pistil of the next flower.
- 6 years ago
I'm sorry, but you don't seem to address the question. I suppose being gametes, pollen is also haploid so that's not a difference. Perhaps it is that a spore can develop into either male of female and may be more resistant than the pollen, which will be male.