no selaginella has megaspores and microspores
All fungi produce spores as part of their reproductive cycle. These spores are reproductive cells that are dispersed into the environment to germinate and grow into new fungi.
Meiosis in bryophytes, such as mosses and liverworts, occurs within the sporangium or capsule located on the sporophyte generation. The sporangium produces spores through meiosis, and these spores ultimately develop into the gametophyte generation.
Lycopodium produces spores known as homosporous spores, which are all of the same size and shape, allowing for a uniform dispersal method.
Lycopodium plants produce spores known as homosporous spores. These spores are all of the same type and give rise to a single type of gametophyte.
BACTERIA Bacteria reproduce by a process called binary cell division. In this process the parent cell divides to produce two different daughter cells that are similar in shape and size. First the nucleus splits then there is a wall that forms in the middle and finally the bacterium splits completely. FUNGI Fungi can reproduce by two means: 1) Asexually 2)Sexually In the asexual method hyphae's form a swelling at the top known as sporangium. This sporangium divides into many multinucleate spherical structures with a hard covering and these are known as spores. After a while, the brittle wall of the sporangium bursts and all the spores fall onto the substrate and when conditions are favourable the germinate to form hyphae. In the sexual method which is known as conjugation, two hypahe of differnet strains (+ve and -ve) come into intimate contact. At the point of contact a swelling called progametangia arise. These progametangiua contains many nuclei and cytoplasm, soon the wall between the progametangia diffuse and leads to the formation of coenozygote, then the coenozygote develops a thick and warty skin and is known as Zygospore. The zygospore then germinates to form a hyphae or promycelium.
Not all of the spores survive.
Either a Spore or Sori The Rhizome is an underground stem that they grow from. Hope I helped!
Mosses and ferns grow from spores as do some fungi.
-- All regular (equilateral) triangles are similar. -- All squares are similar. -- All pentagons are similar. -- All hexagons are similar. . . . etc. Any regular polygon is similar to all other regular polygons with the same number of sides.
Two shapes are said to be similar if they have the same angles, and the crresponding sides are all in the same proportion.
No. To be similar ALL lengths must be in the same ratio. If two cylinders have the same radii, but different heights then the radii have one ratio (1:1) but the heights have a different ratio; thus they are not similar.
Polygons will be similar if they have the same number of sides AND all of their angles are the same. All of their angles are the same if all but one of their angles are the same because with the same number of sides the angles must add up to the same thing. All squares are similar (4 right angles and sides of equal lenght). All rectangles are similar (4 right angles). We know two triangle are similar if two or mare angles are the same, or if one angle is the same and the two adjacent sides are the same length. Variations of this last proof may apply to some other polygons.