Heterospory in pteridophytes? -Biology

Description : Which one of the following is considered important in the development of seed habit? (a) Heterospory (b) Haplontic life cycle (c) Free-living gametophyte (d) Dependent sporophyte

Last Answer : (a) Heterospory

Similarities between bryophytes and pteridophytes? -Biology

Description : Similarities between bryophytes and pteridophytes? -Biology

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Characteristics of pteridophytes. -Biology

Description : Characteristics of pteridophytes. -Biology

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Examples of homosporous pteridophytes. -Biology

Description : Examples of homosporous pteridophytes. -Biology

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Where are pteridophytes found? -Biology

Description : Where are pteridophytes found? -Biology

Last Answer : Most Pteridophytes are terrestrial and grows in moist and shady places while some flourish well in open dry places. Pteridophyta do not produce seeds but they produce spores. Spores are produced by leaves, usually in under surface of leaves.

Examples of pteridophytes plants? -Biology

Description : Examples of pteridophytes plants? -Biology

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Economic importance of pteridophytes. -Biology

Description : Economic importance of pteridophytes. -Biology

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Examples of heterosporous pteridophytes -Biology

Description : Examples of heterosporous pteridophytes -Biology

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Pteridophytes reproduction. -Biology

Description : Pteridophytes reproduction. -Biology

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Difference between homosporous and heterosporous pteridophytes -Biology

Description : Difference between homosporous and heterosporous pteridophytes -Biology

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Classification of pteridophytes. -Biology

Description : Classification of pteridophytes. -Biology

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$ Tracheophytes are the plants with vascular tissues. ! Tracheophytes are of three types (i) Pteridophytes (ii) Gymnosperms (iii) Angiosperms

Description : $ Tracheophytes are the plants with vascular tissues. ! Tracheophytes are of three types (i) Pteridophytes (ii) Gymnosperms (iii) Angiosperms

Last Answer : $ Tracheophytes are the plants with vascular tissues. ! Tracheophytes are of three types (i) Pteridophytes (ii ... D. If both As and R are wrong.

$ Cryptogams are those plants which have large sized sex organs. ! Pteridophytes are the cryptogams without embryo formation.

Description : $ Cryptogams are those plants which have large sized sex organs. ! Pteridophytes are the cryptogams without embryo formation.

Last Answer : $ Cryptogams are those plants which have large sized sex organs. ! Pteridophytes are the cryptogams without embryo ... D. If both As and R are wrong.

In bryophytes and pteridophytes, transport of male gametes requires

Description : In bryophytes and pteridophytes, transport of male gametes requires

Last Answer : In bryophytes and pteridophytes, transport of male gametes requires (A) Birds (B) Water (C) Wind (D) Insects

Mention one example each of aquatic and xerophytic pteridophytes.

Description : Mention one example each of aquatic and xerophytic pteridophytes.

Last Answer : Mention one example each of aquatic and xerophytic pteridophytes.

Write economic importance of Pteridophytes.

Description : Write economic importance of Pteridophytes.

Last Answer : Write economic importance of Pteridophytes.

Compare the gametophyte and sporophyte of Bryophytes with that of Pteridophytes.

Description : Compare the gametophyte and sporophyte of Bryophytes with that of Pteridophytes.

Last Answer : Compare the gametophyte and sporophyte of Bryophytes with that of Pteridophytes.

Double fertilization is found in: (a) Bryophytes (b) Angiosperms (c) Gymnosperms (d) Pteridophytes

Description : Double fertilization is found in: (a) Bryophytes (b) Angiosperms (c) Gymnosperms (d) Pteridophytes

Last Answer : Ans. ((b))

Which of the following are mostly woody trees, always perennials and never herbs or annuals? (a) Angiosperms (b) Gymnosperms (c) Pteridophytes (d) Bryophytes

Description : Which of the following are mostly woody trees, always perennials and never herbs or annuals? (a) Angiosperms (b) Gymnosperms (c) Pteridophytes (d) Bryophytes

Last Answer : Ans:(b)

Our major foods, fibres, spices, fruits and beverage crops are (a) Flowering plants (b) Gymnospermous plants (c) Pteridophytes (d) Bryophytes

Description : Our major foods, fibres, spices, fruits and beverage crops are (a) Flowering plants (b) Gymnospermous plants (c) Pteridophytes (d) Bryophytes

Last Answer : Ans:(a)

The independent structure developed in pteridophytes which produces male and female gametes is

Description : The independent structure developed in pteridophytes which produces male and female gametes is

Last Answer : Prothallus.

The adult plant body in pteridophytes is

Description : The adult plant body in pteridophytes is

Last Answer : sporophyte.

What is the significant characteristic acquired by pteridophytes in the process of evolution? Give 2 examples of pteridophytes.

Description : What is the significant characteristic acquired by pteridophytes in the process of evolution? Give 2 examples of pteridophytes.

Last Answer : The significant characteristic acquired by pteridophytes is vascular tissues (xylem and phloem). Ex: Nephrolepis, Selaginella, Adiantum, Lycopodium, Marsilea

Mention the economic importance of pteridophytes/ferns.

Description : Mention the economic importance of pteridophytes/ferns.

Last Answer : a) Ferns are grown for their ornamental value. b) Leaves of pteridophytes are used in making flower bouquet. c) Some ferns are of medicinal importance. d) Some ferns like horse-tail and club mosses are involved in the formation of fossil fuels like coal and petroleum.

Explain alternation of generations in pteridophytes.

Description : Explain alternation of generations in pteridophytes.

Last Answer : The process by which gametophyte and sporophyte formed alternately during the life cycle is called alternation of generations. The life cycle of pteridophytes includes two successive generations namely a ... . Fusion of male and female gametes results in zygote which develops into a sporophyte

How do pteridophytes reproduce sexually?

Description : How do pteridophytes reproduce sexually?

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?

Description : How do pteridophytes reproduce asexually?

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

What is sporophyte of pteridophytes?

Description : What is sporophyte of pteridophytes?

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.

What are Pteridophytes?

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.

Pollination occurs in (a) bryophytes and angiosperms (b) pteridophytes and angiosperms (c) angiosperms and gymnosperms (d) angiosperms and fungi.

Description : Pollination occurs in (a) bryophytes and angiosperms (b) pteridophytes and angiosperms (c) angiosperms and gymnosperms (d) angiosperms and fungi.

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

Heterospory in pteridophytes? -Biology

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