Ecology and Plant Geography-Ecological Factors [IFS (Forest Services) Botany]: Questions 1 - 8 of 8

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Question 1

Appeared in Year: 2020 (IAS)

Describe in Detail Subjective▾

Write note on: Transgenic plants as living bioreactors.

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Explanation

  • Genetically modified plants can be used to generate wide range of biological compounds and act as bioreactors.
  • The compounds found from bioreactors are carbohydrates, lipids, proteins along with secondary products.
  • Bioreactor is a device in which the organism is cultivated and motivated to form the desired products.
  • Transgenic plants formed by transfe…

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Question 2

Appeared in Year: 2016 (IAS)

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Role of soil solarization in disease control.

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Explanation

Soil Solarization

  • Solarization is a chemical free way of controlling pests and pathogenic microorganisms such as fungi, bacteria, nematodes, insects, and wild plants in the soil before farming.
  • Solarization technology does not release any dangerous chemical residue in the ground.
  • It is a safer way to treat soil for disease control.
  • It is simple, effect…

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Question 3

Appeared in Year: 2018 (IAS)

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What is ecological succession? Discuss various models describing the mechanism of succession?

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Explanation

Succession is a one-way change in the organisation of a community. Simply said, succession is the natural change in the structure and species makeup of a community.

The following three parameters can be used to define ecological cession:

  • It is the systematic transformation of a community that is directed and hence predictable.
  • It is the consequence of…

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Question 4

Appeared in Year: 2021 (IAS)

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Give a brief account of ecological pyramids. Describe ecological factors and their significance in plants.

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Explanation

  • Ecological pyramids: In any ecosystem, there is some form of link between the numbers, biomass, and energy contents of the producers and consumers of various orders. When these interactions are shown diagrammatically, they are referred to as ecological pyramids, which are classified into three types:
  • The number pyramid examines the link between the …

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Question 5

Appeared in Year: 2019 (IAS)

Write in Short Short Answer▾

Write explanatory notes with examples on the following:

Explain and justify with examples that recycling plays an important role in solid waste management. (Paper 2)

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Question 6

Appeared in Year: 2022

Describe in Detail Subjective▾

Describe in detail about the production of haploid plants from anther culture. (Paper-1)

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Explanation

In the sporophyte, haploid plants have just a single pair of chromosomes (gametophytic number of chromosomes, i.e.. n) . This is in contrast to diploids, which have two sets of chromosomes (2n) . Haploid plants are extremely important for the creation of homozygous lines (homozygous plants) and for plant improvement in plant breeding programs.

Andro…

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Question 7

Appeared in Year: 2020

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Write Note on: Give a concise account of Krebs cycle. (Paper-2)

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Explanation

Overall Equation of Krebs Cycle

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Question 8

Appeared in Year: 2020

Describe in Detail Subjective▾

Write an elaborate note on the phytogeographical zones (regions) of India.

The following are the eight major Phytogeographic regions of India: (Paper-2)

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Explanation

  • Deccan Plateau
  • Malabar Coast
  • Indus Plain
  • Ganges Plain
  • Assam
  • Eastern Himalayas
  • Central Himalayas
  • Western Himalayan

Flora of Deccan

Deccan encompasses the complete peninsula south of the Ganges and east of Malabar. The significant trees include Michelia champaca, Dillenia aurea, Chloroxylon swetenia, Cedrela toona, Santalum album, Pterocarpus sentinus, Soyami…

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