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Biology > Plant Kingdom > Pteridophytes
Plant Kingdom

Pteridophytes

When you think of forests, you picture trees, abundant lush green ferns, and other plants. But trust me the first thing that you will notice when you go to a forest is the abundant foliage of fern plants. These ferns, in biological terms, are nothing but the pteridophytes. They belong to the division Pteridophyta of the plant kingdom.

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What are Pteridophytes?

Pteridophytes are plants that do not have any flowers or seeds. Hence another name for it is Cryptogams. They include ferns and horsetails. In fact, they can be considered as the first terrestrial vascular plants, showing the presence of the vascular tissue, xylem, and phloem. Mostly, we find these plants in damp and shady places. Also, most ferns are grown as ornamental plants.

Pteridophytes

Features of Pteridophytes

Pteridophytes display differentiation. The plant body can be divided into true root, stem, and leaves. A saprophyte is the main plant body here. Some of the species belonging to this division have small leaves called the microphylls. For example, Selaginella. Megaphylls are the large leaves that some pteridophytes have. For example, fern plants. The main plant bears the sporangia. These bear some leaf-like appendages called the sporophylls. In a few species such as Selaginella and Equisetum, the sporophylls form compact structures called cones or strobili.

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Reproduction in Pteridophytes

Pteridophytes

Pteridophytes show a true alternation of generations. Here, the dominant sporophyte produces spores through meiosis. The gametophyte generation forms gametes by mitosis. The spores are produced by the sporangia in the spore mother cells. These spores germinate and give rise to gametophytes.

These gametophytes are free-living, multicellular and photosynthetic. They are called as the prothallus. Generally, the gametophytes require damp and cool places to grow, due to their dependence on water. For this reason, the growth of pteridophytes is confined to certain geographical areas.

Antheridia is the name of the male sex organs and archegonia is the name of female sex organs. Antherozoids are the male gametes, which are released by the antheridia. Antherozoids can get transferred to the archegonia which are the female sex organs, only in the presence of water. Once the fusion of the gametes occurs, a zygote is formed. This zygote produces the sporophyte, after division.

When the spores of the plants are similar then these plants are called homosporous plants. Heterosporous plants are the ones that have two different kinds of spores. They are the megaspores and the microspores. In these heterosporous plants, the megaspores and microspores germinate and give female and male gametophytes respectively.

Classification of Pteridophytes

There are four classes, namely:

  • Psilopsida
  • Lycopsida
  • Sphenopsida
  • Pteropsida

Learn more about the Life Cycle of Plant here in detail.

Solved Question For You

Q: Why are pteridophytes common in moist and damp areas?

Ans: Pteridophytes have a dependence on water. Reproduction and fusion of gametes can happen in the presence of water. In humid and damp conditions, fertilization occurs effectively and the reproduction is more. Hence they can proliferate more.

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Muhashin alom
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Muhashin alom

Please give 10 features of algae by point to point

Boniphance bunzali
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Boniphance bunzali

1.they are primarily aquatic
2.algae are photosynthetic organism
3.they are thallophytic means without true roots,stems,and leaves
4.they are cryptogamic means they do not produce seeds, flowers
5.they possess a photosynthetic apparatus called pyrenoid
6.it exhibit both sexual and asexual reproduction

Muhashin alom Bhaiji
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Muhashin alom Bhaiji

Who are you ?
A sick fucker……
a bastard…

collins
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collins

What are the three classification of algae under morphological and physiological difference

Kingsley Emoka
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Kingsley Emoka

1. classification based on pigmentation
2. classification based on cell wall
3. classification based on nature of flagellum
4. classification based on food resevoir

Akanaha
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Akanaha

B.sc 1st year ke notes ki taiyari krwa dijiye

Akanha.ka.ajib.naam
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Akanha.ka.ajib.naam

Kya karegi ladki Notes lekar….

Madhu
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Madhu

Guys you can have a visit to this website for more elaborate, concise and detailed explanation of different topics of Bsc.

Ramani
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Ramani

But i have doubt regarding gymnosperms that,,,,, the gymnosperms type of wood is present in some members of angiosperms family.so in which family it is present ?

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