Economic importance of pteridophytes. -Biology

Economic importance of pteridophytes. -Biology
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Last Answer : Prothallus an independent structure produces male and female gametes called antheridia and archegonia. The gametes fuse and forms zygote developing into a sporophyte.

How do pteridophytes reproduce asexually?

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Last Answer : Pteridophytes reproduce asexually by producing haploid spores. The spores germinate into a haploid gametophyte.

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Last Answer : Sporophyte is the adult plant body in pteridophytes.

Mention the characteristics of pteridophytes.

Description : Mention the characteristics of pteridophytes.

Last Answer : a) Pteridophytes are vascular plants. b) They were the first terrestrial plants to develop vascular tissues. c) They grow in moist soil, on damp walls, cool & shady regions. The plant body ... is by fusion of male and female gametes. Ex: Nephrolepis, Selaginella, Adiantum, Lycopodium, Marsilea.

Give reason: Pteridophytes are included under tracheophytes.

Description : Give reason: Pteridophytes are included under tracheophytes.

Last Answer : As pteridophytes have vascular tissues, they are included under tracheophytes.

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Description : What are Pteridophytes?

Last Answer : Pteridophytes are vascular plants. They are the first terrestrial plants to develop vascular tissues.

Give the characteristics of Pteridophytes?

Description : Give the characteristics of Pteridophytes?  

Last Answer : i) The plant body of Pteridophytes has true roots, stem and leaves. ii) They have vascular tissues. iii) They do not bear flowers, fruits and seeds. iv) Both sporophyte and gametophyte generations are independent and free living. v) The gametophyte is much reduced and smaller in size. 

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Last Answer : (c) angiosperms and gymnosperm

.A well developed archegonium with neck consisting of 4-6 rows and neck canal cells, characterises (a) gymnosperms and flowering plants (b) pteridophytes and gymnosperms (c) gymnosperms only (d) bryophytes and pteridophytes

Description : .A well developed archegonium with neck consisting of 4-6 rows and neck canal cells, characterises (a) gymnosperms and flowering plants (b) pteridophytes and gymnosperms (c) gymnosperms only (d) bryophytes and pteridophytes

Last Answer : d) bryophytes and pteridophytes.

A plant having seeds but lacking flowers and fruits belongs to (a) pteridophytes (b) mosses (c) ferns (d) gymnosperms.

Description : A plant having seeds but lacking flowers and fruits belongs to (a) pteridophytes (b) mosses (c) ferns (d) gymnosperms.

Last Answer : (d) gymnosperms.

.Multicellular branched rhizoids and leafy gametophytes are the characteristics of (a) some bryophytes (b) pteridophytes (c) all bryophytes (d) gymnosperms.

Description : .Multicellular branched rhizoids and leafy gametophytes are the characteristics of (a) some bryophytes (b) pteridophytes (c) all bryophytes (d) gymnosperms.

Last Answer : (a) some bryophytes

In which of the following would you place the plants having vascular tissue lacking seeds? (a) Pteridophytes (b) Gymnosperms (c) Algae (d) Bryophytes

Description : In which of the following would you place the plants having vascular tissue lacking seeds? (a) Pteridophytes (b) Gymnosperms (c) Algae (d) Bryophytes

Last Answer : (a) Pteridophytes

Which one of the following is a correct statement? (a) Pteridophyte gametophyte has a protonemal and leafy stage. (b) In gymnosperms, female gametophyte is free- living. (c) Antheridiophores and archegoniophores are present in pteridophytes. (d) Origin of seed habit can be traced in pteridophytes.

Description : Which one of the following is a correct statement? (a) Pteridophyte gametophyte has a protonemal and leafy stage. (b) In gymnosperms, female gametophyte is free- living. (c) Antheridiophores and ... are present in pteridophytes. (d) Origin of seed habit can be traced in pteridophytes.

Last Answer : (d) Origin of seed habit can be traced in pteridophytes.