Cryptogams-Bryophytes (IFS (Forests Services) Botany (Mains)): Questions 1 - 8 of 15

Access detailed explanations (illustrated with images and videos) to 312 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time!

View Sample Explanation or View Features.

Rs. 800.00 or

How to register?

Question number: 1

» Cryptogams » Bryophytes

Edit

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

  • 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 unicellular diploid zygote.

  • This zygote undergoes many rounds of mitosis to become mul

… (110 more words) …

Question number: 2

» Cryptogams » Bryophytes

Edit

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

Edit

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

Funaria capsule:

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

  • It differentiated into foot, seta and capsule.

  • The capsule is highly organized structure.

  • The capsule is pear shaped and spore producing structure.

  • Capsule consists of apophysis, annulus, columella, outer and

… (152 more words) …

Question number: 4

» Cryptogams » Bryophytes

Edit

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 ultimately fills

… (368 more words) …

Question number: 5

» Cryptogams » Bryophytes

Edit

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 the dorsal surface of the

… (340 more words) …

Question number: 6

» Cryptogams » Bryophytes

Edit

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 phylogentic studie

… (230 more words) …

Question number: 7

» Cryptogams » Bryophytes

Edit

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 plant to survi

… (185 more words) …

Question number: 8

» Cryptogams » Bryophytes

Edit

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 in mosses.

  • After l

… (161 more words) …

Developed by: