Cryptogams-Bryophytes [IFS (Forest Services) Botany]: Questions 10 - 19 of 37

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Question 10

Appeared in Year: 2014

Describe in Detail Subjective▾

L. S. of capsule of Funaria.

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Explanation

L. S. Capsule of Funaria

  • In Funaria, the capsule is slightly oblique asymmetrical. it is erect and green when young but become bright orange and curved at maturity.
  • The complex internal structure of capsule can be studied in longitudinal section that is L. S. it has three distinct reasons apophysis, the proper and apical region.

… (6 more words, 1 figure) …

Question 11

Appeared in Year: 2015

Describe in Detail Subjective▾

Draw the well labelled diagram of L. S of strobilus of sleginella and discuss its main feature.

(Paper 2)

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Explanation

Sleginella

  • The section of strobilus axis with which is attached micro and megasporophyll.
  • The strobilus shows the presence of both microsporangia and Megasporangia. In some species one side of the strobilus bears microsporangia and other side bears Megasporangia.
  • Usually the Megasporangia are located in the basal portion and the microsporangia in the …

… (89 more words, 4 figures) …

Question 12

Appeared in Year: 2015

Describe in Detail Subjective▾

With the help of suitable diagram, describe the development of sporophyte in bryophyte. (Paper 2)

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Explanation

Development of Sporophyte Found in Bryophyt…

… (6 more words, 1 figure) …

Question 13

Appeared in Year: 2016

Describe in Detail Subjective▾

Discuss briefly the Peristome teeth of Funaria.

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Explanation

Peristome Teeth of Funaria

  • In apical region of the capsule consists of two important parts, the operculum and peristome.
  • The peristome lies immediately below the operculum.
  • It is attached beneath the edge of the diaphragm and consists of two rings of long curved triangular teeth.
  • The teeth are simply the strips of cuticle and they are not cellular.
  • In t…

… (63 more words, 4 figures) …

Question 14

Appeared in Year: 2016

Describe in Detail Subjective▾

Explain the progressive sterilization of the sporogenous tissue in Bryophytes.

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Explanation

Progress Sterilisation of the Sporogenous Tissue in Bryophytes

  • Evolution of sporophyte by progressive sterilisation of sporophyte is also known as theory of progressive evolution.
  • The sporophytes of complex forms have evolved due to progressive sterilisation of the potential fertile tissue of the simpler forms.
  • In primitive form the sporophyte is simp…

… (499 more words, 19 figures) …

Question 15

Describe in Detail Subjective▾

Explain life cycle of Riccia.

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Explanation

Life Cycle of Riccia

  • It is a Liverwort (Bryophytes) .
  • Plant body is Gametophyte (n) and thallose (i.e.. not differentiated in Root, Stem, Leaves) type.
Explain Life Cycle of Riccia
  • In place of root, rhizoid is present.
  • Rhizoids are unbranched and unicellular. They are of two types smooth walled or tuberculated. In smooth walled rhizoid inner membrane is…

… (158 more words, 24 figures) …

Question 16

Appeared in Year: 2017

Describe in Detail Subjective▾

Describe sporophyte development in Bryophytes with suitable illustrations.

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Explanation

Saprophyte Development in Bryophytes

  • Evolution of sporophyte by progressive sterilisation of sporophyte is also known as theory of progressive evolution.
  • The sporophytes of complex forms have evolved due to progressive sterilisation of the potential fertile tissue of the simpler forms.
  • In primitive form the sporophyte is simple and most of the tissue …

… (742 more words, 19 figures) …

Question 17

Appeared in Year: 2017

Describe in Detail Subjective▾

Describe Algal Phylogeny.

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Explanation

Algal Phylogeny

  • The term phylogeny is the evolutionary development and diversification of species or any particular feature.
  • The algae 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 phy…

… (232 more words) …

Question 18

Appeared in Year: 2017

Write in Short Short Answer▾

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

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Question 19

Appeared in Year: 2018

Describe in Detail Subjective▾

Explain the progressive sterilization of potentially sporogenous tissue found in Bryophyte. Add a note on the role of elaters.

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Explanation

Evolution

  • Evolution of sporophyte by progressive sterilization of sporophyte is also known as theory of progressive evolution.
  • The sporophytes of complex forms have evolved due to progressive sterilization of the potential fertile tissue of the simpler forms.
  • In primitive form the sporophyte is simple and most of the tissue of the sporophyte is fertil…

… (491 more words, 19 figures) …