What is a spore?

Posted on Mar 13, 2022      156

How is a spore different from a seed?

The spore, like the seed, is one of the main reproductive structures of plants, fungi, some bacteria and protozoan unicellular organisms. Thanks to the study of the formation process, it is possible to study in more detail the life cycle of useful organisms or to influence the distribution of biosphere representatives that pose a threat to the national economy.

The concept of “spores” belongs to the reproductive structure of lower, higher plants, fungi and sporophytes. In addition, spores are the dense shells of bacteria that they used to shelter themselves in order to survive adverse climatic conditions. This shell can withstand abnormal temperatures, mechanical pressure, and exposure to aggressive chemicals.

With the help of these shells, organisms can disperse, for because of partial dehydration the lightened cell is simply transported over a considerable distance. Shell spores are not organelles that are designed for reproduction.

Spores formed in lower, higher plants and fungi can be unicellular or multicellular. It also needs them for reproduction or to wait out adverse conditions. Such a shell, which shelters a living organism, can keep an organism viable for many thousands of years.

The spore as a reproductive structure also appeared in algae and is found in some algae, in which there is an alternation of the sporophyte and gametophyte stages. The sporophyte reproduction is asexual, and the sexual reproduction stage is impossible without it. In fungi, it can form these structures on mycelial outgrowths or endogenously, in special spore chambers.

The spores contain almost no nutrients, while the seed contains a reserve of proteins, starch, fats, a small part of water, which increases the chances of plant survival.

Thus, spores have a simpler structure and multifunctionality, while seeds are a later and more complex formation with a higher level of specialization.