Archegonia in gymnosperms. -Biology

Archegonia in gymnosperms. -Biology
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Which one is a wrong statement? (a) Haploid endosperm is typical feature of Gymnosperms. (b) Brown algae have chlorophyll a and c and fucoxanthin. (c) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms. (d) Mucor has biflagellate zoospores

Description : Which one is a wrong statement? (a) Haploid endosperm is typical feature of Gymnosperms. (b) Brown algae have chlorophyll a and c and fucoxanthin. (c) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms. (d) Mucor has biflagellate zoospores

Last Answer : (d) Mucor has biflagellate zoospores

Archegonia in mosses. -Biology

Description : Archegonia in mosses. -Biology

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Archegonia male or female -Biology

Description : Archegonia male or female -Biology

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Are fern archegonia haploid or diploid? -Biology

Description : Are fern archegonia haploid or diploid? -Biology

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What are archegonia? -Biology

Description : What are archegonia? -Biology

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What do archegonia produce? -Biology

Description : What do archegonia produce? -Biology

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Is archegonia haploid or diploid? -Biology

Description : Is archegonia haploid or diploid? -Biology

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Is archegonia present in conifers? -Biology

Description : Is archegonia present in conifers? -Biology

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What are archegonia? -Biology

Description : What are archegonia? -Biology

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What do archegonia produce? -Biology

Description : What do archegonia produce? -Biology

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Is archegonia haploid or diploid? -Biology

Description : Is archegonia haploid or diploid? -Biology

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Is archegonia present in conifers? -Biology

Description : Is archegonia present in conifers? -Biology

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$ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under the effect of chemicals.

Description : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under the effect of chemicals.

Last Answer : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under ... D. If both As and R are wrong.

A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte

Description : A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte

Last Answer : Ans. ((c))

What are antheridia and archegonia?

Description : What are antheridia and archegonia?

Last Answer : Antheridia are the male gamete producing structures in bryophytes/pteridophytes Archegonia are the female gamete producing structures in bryophytes/pteridophytes.

Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and apical meristem (c) Absence of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia

Description : Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and ... of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia

Last Answer : (d) Presence of vessel elements and absence of archegonia

.Which one of the following pairs is wrongly matched? (a) Ginkgo – Archegonia (b) Salvinia – Prothallus (c) Viroids – RNA (d) Mustard – Synergids

Description : .Which one of the following pairs is wrongly matched? (a) Ginkgo – Archegonia (b) Salvinia – Prothallus (c) Viroids – RNA (d) Mustard – Synergids

Last Answer : (b) Salvinia – Prothallus

What is common in all the three, Funaria, Dryopteris and Ginkgo? (a) Presence of archegonia (b) Well developed vascular tissues (c) Independent gametophyte (d) Independent sporophyte

Description : What is common in all the three, Funaria, Dryopteris and Ginkgo? (a) Presence of archegonia (b) Well developed vascular tissues (c) Independent gametophyte (d) Independent sporophyte

Last Answer : (a) Presence of archegonia

Sperms of both Funaria and Pteris were released together near the archegonia of Pteris. Only its sperms enter the archegonia as (a) Pteris archegonia repel Funaria sperms (b) Funaria sperms get killed by Pteris sperms (c) Funaria sperms are less mobile (d) Pteris archegonia release chemical to attract its sperms.

Description : Sperms of both Funaria and Pteris were released together near the archegonia of Pteris. Only its sperms enter the archegonia as (a) Pteris archegonia repel Funaria sperms (b) Funaria sperms get ... (c) Funaria sperms are less mobile (d) Pteris archegonia release chemical to attract its sperms.

Last Answer : (d) Pteris archegonia release chemical to attract its sperms.

Pteridophytes differ from mosses/bryophytes in possessing (a) independent gametophyte (b) well developed vascular system (c) archegonia (d) flagellate spermatozoids.

Description : Pteridophytes differ from mosses/bryophytes in possessing (a) independent gametophyte (b) well developed vascular system (c) archegonia (d) flagellate spermatozoids.

Last Answer : (b) well developed vascular system

Pteridophytes differ from bryophytes and thallophytes in having (a) vascular tissues (b) motile antherozoids (c) archegonia (d) alternation of generations

Description : Pteridophytes differ from bryophytes and thallophytes in having (a) vascular tissues (b) motile antherozoids (c) archegonia (d) alternation of generations

Last Answer : (a) vascular tissues

In ferns, meiosis takes place at the time of (a) spore formation (b) spore germination (c) gamete formation (d) antheridia and archegonia formation.

Description : In ferns, meiosis takes place at the time of (a) spore formation (b) spore germination (c) gamete formation (d) antheridia and archegonia formation.

Last Answer : (a) spore formation

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte lacks archegonia (c) megaspores possess endosperm and embryo surrounded by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Description : Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte ... by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Last Answer : (b) female gametophyte lacks archegonia

Bryophytes can be separated from algae, because they (a) possess archegonia (b) contain chloroplast (c) are thalloid forms (d) have no conducting tissue

Description : Bryophytes can be separated from algae, because they (a) possess archegonia (b) contain chloroplast (c) are thalloid forms (d) have no conducting tissue

Last Answer : (a) possess archegonia

Which of the following is true about bryophytes? (a) They are thalloid. (b) They posses archegonia. (c) They contain chloroplast. (d) All of these

Description : Which of the following is true about bryophytes? (a) They are thalloid. (b) They posses archegonia. (c) They contain chloroplast. (d) All of these

Last Answer : (d) All of these

Companion cells in gymnosperms? -Biology

Description : Companion cells in gymnosperms? -Biology

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Important characteristics of gymnosperms. -Biology

Description : Important characteristics of gymnosperms. -Biology

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Who coined the term gymnosperms? -Biology

Description : Who coined the term gymnosperms? -Biology

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Characteristics of gymnosperms. -Biology

Description : Characteristics of gymnosperms. -Biology

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Economic importance of gymnosperms? -Biology

Description : Economic importance of gymnosperms? -Biology

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Alternation of generations in gymnosperms? -Biology

Description : Alternation of generations in gymnosperms? -Biology

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Where do gametophytes of gymnosperms grow? -Biology

Description : Where do gametophytes of gymnosperms grow? -Biology

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Difference between gymnosperms and angiosperms -Biology

Description : Difference between gymnosperms and angiosperms -Biology

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gymnosperms are heterosporus. but Cycas bears both male and female on one tree. how? -Biology

Description : gymnosperms are heterosporus. but Cycas bears both male and female on one tree. how? -Biology

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gymnosperms are heterosporus. but Cycas bears both male and female on one tree. how? -Biology

Description : gymnosperms are heterosporus. but Cycas bears both male and female on one tree. how? -Biology

Last Answer : answer:

which structures were required for the evolution of the ferns and gymnosperms? -General Knowledge

Description : which structures were required for the evolution of the ferns and gymnosperms? -General Knowledge

Last Answer : Megaphylls and vascular tissue were required for the evolution of the ferns and gymnosperms.

which of the following structures are found in gymnosperms but not in angiosperms? -General Knowledge

Description : which of the following structures are found in gymnosperms but not in angiosperms? -General Knowledge

Last Answer : Cones are found in gymnosperms but not in angiosperms.

$ Sieve tubes have "P" proteins. ! In gymnosperms, sieve tubes are associated with albuminous cells.

Description : $ Sieve tubes have "P" proteins. ! In gymnosperms, sieve tubes are associated with albuminous cells.

Last Answer : $ Sieve tubes have "P" proteins. ! In gymnosperms, sieve tubes are associated with albuminous cells. A. If ... is wrong D. If both As and R are wrong.

$ Those plants which produce seeds, without the formation of fruits are called Gymnosperms. ! Endosperm is triploid in Angiospherms

Description : $ Those plants which produce seeds, without the formation of fruits are called Gymnosperms. ! Endosperm is triploid in Angiospherms

Last Answer : $ Those plants which produce seeds, without the formation of fruits are called Gymnosperms. ! Endosperm is ... D. If both As and R are wrong.

$ Angiosperms produce seeds, but do not produce fruits. ! Fruit and seed formation occurs in Gymnosperms.

Description : $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and seed formation occurs in Gymnosperms.

Last Answer : $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and seed formation occurs in Gymnosperms. A. ... wrong D. If both As and R are wrong.

$ 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.

name the meristems which appear later in life of dicotyledonous and gymnosperms plants and causes increase in the girth of the organ in which they are

Description : name the meristems which appear later in life of dicotyledonous and gymnosperms plants and causes increase in the girth of the organ in which they are

Last Answer : name the meristems which appear later in life of dicotyledonous and gymnosperms plants and causes increase ... of the organ in which they are active.

Write the important characteristics of gymnosperms with respect to following points: 1. Vascular tissues  2. Roots  3. Spores  4. Leaves

Description : Write the important characteristics of gymnosperms with respect to following points: 1. Vascular tissues  2. Roots  3. Spores  4. Leaves

Last Answer : Write the important characteristics of gymnosperms with respect to following points: 1. Vascular tissues 2. Roots 3. Spores 4. Leaves

Are tangerines angiosperms or gymnosperms?

Description : Are tangerines angiosperms or gymnosperms?

Last Answer : Feel Free to Answer

What diseases can gymnosperms get?

Description : What diseases can gymnosperms get?

Last Answer : What is the answer ?

What happens to gymnosperms during pollination?

Description : What happens to gymnosperms during pollination?

Last Answer : What is the answer ?

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)

Delicious chilgoza seeds, commercially important products such as turpentine and resin and the drug ephedrine, useful in asthma and other respiratory ailments, are all obtained from plants that are (a) Ferns (b) Algae (c) Monocotyledons and dicotyledons (d) Gymnosperms

Description : Delicious chilgoza seeds, commercially important products such as turpentine and resin and the drug ephedrine, useful in asthma and other respiratory ailments, are all obtained from plants that are (a) Ferns (b) Algae (c) Monocotyledons and dicotyledons (d) Gymnosperms

Last Answer : Ans:(d)

Companion cells of phloem are found in – (1) Gymnosperms (2) Bryophyta (3) Pteridophyta (4) Angiosperms

Description : Companion cells of phloem are found in – (1) Gymnosperms (2) Bryophyta (3) Pteridophyta (4) Angiosperms

Last Answer : (4) Angiosperms Explanation: Only in angiosperms are sieve tubes and companion cells found in the plaloern. In other vascular plants, parenchyma cells function in the same way as companion cells (that ... living protoplasm), but they are not derived from the same mother cell as the sieve element.