Optionals IAS Mains Botany: Questions 44 - 51 of 511

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Question 44

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Appeared in Year: 2014 (IFS)

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What are the pigments that are found in red algae? (Paper A Section A)

Explanation

Pigments Found in Red Algae

  • Red algae is also known as Rhodophyta and they are marine plants that live mainly in shallow waters and deep tropical seas and some are live in freshwater.
  • Red algae have no flagella and typically grow attached to a hard surface or on other algae.
Image Showing Red Algae
Image Showing Pigments of Red Algae
  • Red algae contain d…

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Question 45

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Appeared in Year: 2014 (IFS)

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

Question 46

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Appeared in Year: 2014 (IFS)

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How significant is the parasexuality in Aspergillus? (Paper A Section A)

Explanation

Parasexuality or Parasexual Cycle

  • The parasexual cycle is defined as a cycle in which plasmogamy, karyogamy and meiosis take place but not at a specified time or at specified points in the life cycle of an organism.
  • In some fungi true sexual cycle comprising of nuclear fusion and meiosis is absent. These fungi derive the benefits of sexuality through…

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Question 47

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Appeared in Year: 2015 (IFS)

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What are ‘carrier proteins’ ? Describe the ion uptake mechanism in plants mediated by carrier proteins. (Paper 2, Section B)

Question 48

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Appeared in Year: 2014 (IFS)

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Explain to what extent has the technique of micropropagation been successful in achieving our goals. (Paper A Section A)

Explanation

Micropropagation

  • The regeneration of whole plant through tissue culture is popularly called micropropagation.
  • This is a technique where a callus mass has been initiated from a single ex-plant taken from any living part of a donor plant and within very short time and space, a large number of plantlets can be produced from such callus tissue.
  • Again repe…

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Question 49

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Appeared in Year: 2014 (IFS)

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Differentiate between prokaryote and eukaryote. (Paper A Section A)

Explanation

Prokaryotic Cells

  • Prokaryotic cells are ells without nucleus.
  • The DNA in prokaryotic cells is in the cytoplasm rather than enclosed within a nuclear membrane.
  • Prokaryotic cells are found in single celled organisms like bacteria and organisms with prokaryotic cells are called prokaryotes.
Image Showing Prokaryotic Cell

Eukaryotic Cells

  • Eukaryotic cells ar…

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Question 50

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Appeared in Year: 2014 (IFS)

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What are the xerophytic and hydrophytic characters found in the rhizome anatomy of Equisetum? (Paper A Section A)

Explanation

Xerophytic Characters of Equisetum Plant

  • Presence of thick coat of cuticle all over the epidermal layer of stem.
  • Photosynthetic stem having chlorenchymatous cortex.
  • Stem behaving as leaves.
  • Presence of small, scale like leaves with limited number of chloroplast.
  • Presence of sunken stomata in groove of stem.
  • Stiff epidermis and presence of ridges and furr…

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Question 51

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Appeared in Year: 2015 (IFS)

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Write an account of ‘Joint Forest Management Programme’ (JFMP) . How does people՚s participation ensure sustainable forest resource management? (Paper 2, Section B)