Pteridophytes: Classification of Pteridophytes (575 Words).

Pteridophyta. Uses Of Pteridophytes; Ferns are plants that don't produce seeds; they reproduce with spores. They generally live as an understory plant in shaded, moist areas, although their habitat varies considerably. Their leaves are called fronds, which are highly divided except in a few isolated species. While they don't have any major economic importance, they have a minor economic impact.

SHORT QUESTIONS OF PTERIDOPHYTA 1. Give occurrence of pteridophytes. Ans: Pteridophyta is a group of ancient plants. They formed the dominant part of the earths during Palaeozoic and Mesozoic periods. Majority of Pteridophytes became extinct. They are preserved in the form of fossils or coal deposits. Only a few living Pteridophyta are left.

ADVERTISEMENTS: 1. Members of this group are most primitive living vascular plants. Related posts: What are Pteridophytes? Six important Features Of Gymnosperms What is the difference between Bryophyta and Pteridophyta? Sample essay on our Reproductive System What Are The Important Characteristic of Bryophytes?

Pteridophyta (pteridophytes) A division of the plant kingdom, comprising the vascular cryptogams.They are flowerless plants exhibiting an alternation of 2 distinct and dissimilar generations. The first is a non-sexual, spore-bearing, sporophyte generation. It usually appears as a relatively large plant, with stems containing vascular tissue that conducts water and dissolved solutes through the.

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The Plant Kingdom Essay Sample. Plants provide nourishment for our bodies and souls. With the help of protists and fungi, plants provide the oxygen we breathe and the food that sustains us — either directly or indirectly, by feeding other animals.

ESSAY ON STELLAR SYSTEM OF PTERIDOPHYTES - Such composite structures do not remain within the limits of stellar theory of Van Tieghem and Douliot. Definition of Stelar System 2. In the more.

The life cycles of the different classes and families of the Pteridophyta are quite unique. They do though share some common charactarists. In the Pteridophyte division both the sporophyte and gametophyte generations live as free living plants. The sporophyte is much larger and longer lived than the gametophyte. It is the dominant generation.

The modern classification of pteridophytes have been suggested by many scientist according to the Sporne(1975) pteridophytes have been classified into six classes. They are Psilopsida, Psilotopsida, Lycopsida, Sphenopsida, Pteropsida and Progymnospermopsida. This classification is a modification is a modification of Reimer’s (1954) system.

Embryophyte cells also generally have an enlarged central vacuole enclosed by a vacuolar membrane or tonoplast, which maintains cell turgor and keeps the plant rigid. In common with all groups of multicellular algae they have a life cycle which involves 'alternation of generations'.

Chapter10 Pteridophyta Main teaching content: the characteristic of Pteridophyta, the morphosis and life cycle of pteris's sporophore and gametophytic, their economical significance, and Pteridophyta's class and its origin. Nnode and nodus: the characteristic of Pteridophyta,the morphosis and life cycle of pteris's sporophore and gametophytic.

The main characteristics of pteridophytes are: Pteridophytes are mostly terrestrial sometimes growing in the moist and shady regions.Whereas some are aquatic like Azolla.Salvinia. The innhabitants of dry land are Selaginella rupestris, Selaginella lepidophylla, Equisetum arvens etc.; Pteridophytes shows large variation in the form, size and habit.