What is Homosporous and heterosporous with example?
Definition. Homosporous pteridophytes refer to the pteridophytes that produce only one type of spores that are not separated by sex while heterosporous pteridophytes refer to the pteridophytes which produce two types of spores separated by sex.
What is the difference between Homosporous and heterosporous pteridophytes?
Homosporous pteridophytes are the vascular plants that produce only one type of spore. This spore contains both male and female parts. Heterosporous pteridophytes are the vascular plants that produce two types of spores, and thus the male and female parts can be distinguished.
What is Homosporous?
Homosporous is a condition in which identical spores, the same sized spores are produced. Such morphologically identical spores grow into bisexual gametophytes in some of the members (monoecious plants). Hence, in the homosporous condition, all spores would be of the same type.
How do you tell if a plant is Homosporous or heterosporous?
Homosporous plants produce one type of spore which develops into a gametophyte (1n) with both male and female organs. Heterosporous plants produce separate male and female gametophytes, which produce sperm and eggs, respectively.
What is meant by heterosporous?
: the production of microspores and megaspores (as in seed plants)
What is the difference between Homosporous and heterosporous plants quizlet?
homosporous plants produce a single type of spore that develops into a gametophyte that produces both egg and sperm. heterosporous plants produce two different types of spores that develop into two different gametophytes that produce either egg or sperm.
What is heterosporous?
heterosporous. / (ˌhɛtəˈrɒspərəs) / adjective. (of seed plants and some ferns and club mosses) producing megaspores and microsporesCompare homosporous.
What is a heterosporous plant?
Heterosporous refers to the plants producing different types of spores that are different in structure, size and function. They produce two kinds of spores, smaller microspores and bigger megaspores. Most pteridophytes are homosporous, i.e. they produce all spores of a similar kind.
What plants are Homosporous?
Extant homosporous plants include most ferns and many lycophytes. The homosporous life cycle is an effective means for long-distance dispersal of species.
What is heterosporous in plants?
Are all plants heterosporous?
All seed plants, and some spore-dispersed plants, are heterosporous (Figure 2). They produce two different types of sporangia, resulting in the small microspores (sperm-producing) that develop to become microgametophytes and larger megaspores (egg-producing) that develop to form the megagametophytes.
Are humans heterosporous or Homosporous?
What is the Difference Between Homosporous and Heterosporous …
What is the difference between Homosporous and heterosporous plants mastering biology?
Plants that are homosporous produce spores of the same size and also type. Heterosporous plants produce spores of two different sizes which are the larger spore called the megaspore, functioning as a female spore and the smaller spore known as the microspore that functions as a male spore.
What are heterosporous examples?
The male gametophytes bear antheridia and the female gametophytes bear archegonia. Gymnosperms are heterosporous, e.g. Pinus, Cycas. Pteridophytes are mostly homosporous but a few genera, e.g. Selaginella and Salvinia are heterosporous.
Which is a heterosporous plant?
Marsileaceae and Salviniaceae, is called heterospory. …all species of Selaginella are heterosporous; that is, they produce spores of two sizes, the larger designated as megaspores and the smaller as microspores. The megaspores develop into female gametophytes and the microspores into male gametophytes.
What is an example of a heterosporous plant?
Azolla, Selaginella, Salvinia, Pilularia, Isoetes, and Marsilea are the examples of heterosporous pteridophytes.
What is heterosporous explain?
What makes a plant heterosporous?
reproduction of plants
A heterosporous life history occurs in some pteridophytes and in all seed plants. It is characterized by morphologically dissimilar spores produced from two types of sporangia: microspores, or male spores, and megaspores (macrospores), or female spores.
What plants are heterosporous?
Because the two spores produce different types of gameotphytes, They are called heterosporous, a feature found only in a few species of ferns, , and all of the seed plants (i.e., gymnosperms and angiosperms).
Which plants are Homosporous?
What do you mean by heterosporous?
Heterospory is a phenomenon in which two kinds of spores are borne by the same plant. These spores differ in size. The smaller one is known as microspore and the larger one is known as megaspore.
What is heterosporous in biology?
What is an example of Homosporous plants?
The homosporous pteridophytes are the whisk ferns, Psilotum and Tmesipteris (Psilotophyta); the lycopods, Lycopodium sensu lato and Phylloglossum (class Aglossopsida of the Microphyllophyta); the horsetails and scouring rushes, Equisetum (Arthrophyta); and most families of ferns (Pteridophyta).
What is heterosporous give examples?
How can you determine if a plant is heterosporous?
How could you determine if a plant is heterosporous? Male and female reproductive structures are located on separate plants.