Cryptogams-Bryophytes [IFS (Forest Services) Botany]: Questions 10 - 19 of 37
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Question 10
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)
EditExplanation
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)
EditExplanation
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.
EditExplanation
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.
EditExplanation
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
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.
- 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.
EditExplanation
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
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.
EditQuestion 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.
EditExplanation
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) …