Cryptogams-Bryophytes (IFS (Forests Services) Botany (Mains)): Questions 1 - 9 of 10

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Question number: 1

» Cryptogams » Bryophytes

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Appeared in Year: 2015

Essay Question▾

Describe in Detail

With the help of suitable diagrams, describe the development of sporophyte in bryophytes. (Paper-1, Section-A)

Explanation

Development of sporophyte in bryophytes

Development of Sporophyte in Bryophytes

Understanding the development of sporophyte in bryophytes

  • A sporophyte is created by sexual reproduction of the gametophyte generation.

  • Gametophytes make haploid unicellular gametes, or sperm and eggs.

  • When a sperm cell fuses with an egg cell, this is called fertilization.

  • It creates a uni

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Question number: 2

» Cryptogams » Bryophytes

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Appeared in Year: 2014

Short Answer Question▾

Write in Short

What is the heterotrichous habit of moss protonema growth? (Paper A Section A)

Question number: 3

» Cryptogams » Bryophytes

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

Draw scientifically accurate diagrams of the following and label the parts: L. S. of capsule of Funaria (Paper - 1, Section - B)

Explanation

Image showing L.S. of capsule of Funaria

Image Showing L. S. Of Capsule of Funaria

Capsule is a part of sporophyte and the sporophyte in Funaria is called as sporogonium and is green in colour while is young and become reddish brown at mature.

Funaria capsule:

  • A mature sporogonium or sporophyte of Funaria is borne at the end of the female branch.

  • It differentiated into foot,

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Question number: 4

» Cryptogams » Bryophytes

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Economic importance and distribution of Bryophytes (Paper 1, Section A)

Explanation

Economic importance of Bryophytes:

  • Protection from soil erosion: Bryophytes, especially mosses, form dense mats over the soil and prevent soil erosion by running water.

  • Soil formation: Mosses are an important link in plant succession on rocky areas. They take part in binding soil in rock crevices formed by lichens. Growth of Sphagnum ultim

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Question number: 5

» Cryptogams » Bryophytes

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

Explain variation in male reproduction structures in liverworts.

Explanation

  • Variation in male reproduction structure in liverworts.

  • The Hepaticopsida class is called liverworts. It have two order in it marchantiales and Juungermanniales.

  • To differentiate between Male reproductive structures we have to study them individually.

Riccia

  • The mature antheridium is a globular, oval or club shaped embedded on th

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Question number: 6

» Cryptogams » Bryophytes

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

Briefly discuss the phylogeny of algae.

Explanation

  • The term phylogeny is the evolutionary development and diversification of species or any perticular feature.

  • The alage are an assemblage of morphologically diverse, photosynthetic protists that are ubiquitous in distribution.

  • to understand algal phylogeny, it has been revolutionized with molecular evolutionary methods.

  • The molecular

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Question number: 7

» Cryptogams » Bryophytes

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

Discuss the role of amphibious plants in the evolution of land plants.

Explanation

  • Bryophytes works as link between aquatic plants and land plants (pteridophyts, gymnosperms, and angiosperms)

  • But most of the resemblance of bryophyte is seen with Pteridophytes.

  • Bryophytes have originated from some aquatic ancestor. bryophtes were pioneers in establishing themselves on land and opened up the opportunities for different

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Question number: 8

» Cryptogams » Bryophytes

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

What is the heterotrichous habit of moss protonema growth?

Explanation

  • There are two type protonema. primary protonema and secondary protonema.

  • On germination the spore gives rise to a branched filamentous structure known as primary protonema.

  • Heterotrichous protonema is a tyoe of protonema in which thallus is diffrentiated into a postrate portion and an upright or projrcted system

  • They are mostly found

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Question number: 9

» Cryptogams » Bryophytes

» Cryptogams » Pteridophytes

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

Write notes on the distribution of bryophytes and pteridophytes in deciduous and evergreen forests of india.

Explanation

In india most of the land is covered with evergreen or decicious forest. hence in most of the area bryophytes and teridophytes are found.

Distribution of pteridophytes

  • Variable climate and altitude variantion and dur to this evergreen forest and decidious forest are foun all over the sub contimuette of india.

  • These forest are found in him

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