Question

Name the four classes of pteridophytes.

Answer 1

The four classes of Pteridophyta are as per the following:

Pteridophyta

1. A vascular plant that spreads spores is a pteridophyte.
2. Pteridophytes are frequently referred to as "cryptogams," which indicates that their reproductive strategy is concealed because they don't produce blooms or seeds.

Psilopsida:

1. These are considered the crudest types of pteridophytes as they have no roots; rather root-like designs known as rhizoids are available.
2. Spores delivered by them are of a similar shape and size, for example, homospory.
3. An illustration of Psilopsida incorporates Psilotum.

Lycopsida:

1. The sporophytic assemblage of plants having a place in Lycopsida is partitioned into distinct roots, stems, and leaves.
2. The spores delivered might be similar to Lycopodium or of two kinds as found in Selaginella.

Sphenopsida:

1. The plants of this class are alluded to as horsetails as their appearance is like that of the tail of a pony.
2. Their leaves are very decreased and, on second thought, they are available as whorls from hubs.
3. Sporangia are borne on a tail called a sphenopsid.
4. The majority of the plants in sphenopsid are homosporous.

Pteropsida:

1. The plants in this class are a few under greeneries.
2. Plants have huge leaves and, in this manner, are known as macrophylla.
3. These plants are enduring, for example, staying green consistently.
4. Dryopteris, Pteris, and Adiantum are instances of Pteropsida.