Physiology and Biochemistry-Growth Substances [IFS (Forests Services) Botany (Mains)]: Questions 1 - 3 of 3

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Question number: 1

» Physiology and Biochemistry » Growth Substances

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Appeared in Year: 2014

Essay Question▾

Describe in Detail

Write brief notes on the following in about 150 words each: Allelopathy (Paper 2, Section B)

Explanation

  • Allelopathy is the suppression of growth of one plant species by another or same species due to the release of toxic substances.
  • Allelopathy is a biological phenomenon where one plant inhibits the growth of another.
  • Through the release of allelochemicals, certain plants can greatly affect the growth of other plants either in a good or bad way by leac

… (528 more words) …

Question number: 2

» Physiology and Biochemistry » Growth Substances

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Describe the role of phytohormones in agri- horticulture.

Explanation

There are different role of different phytohormone in agri-horticulture.

Auxin

  • Propagation

  • Stimulation of fruit set

  • Chemical thinning

  • Prevent fruit drop

  • Herbicidal action

Gibberellins

  • Increase fruit size in grape

  • Stimulate fruit set

  • Effect fruit ripening

  • Increase yield in sugarcane

  • Malting of barley

  • Controlling flower bud production

  • Overcome environmental constr

… (159 more words) …

Question number: 3

» Physiology and Biochemistry » Growth Substances

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Allelopathy

Explanation

  • It is a biological phenomenon. In which a plant or organism produces biochemical that influence the germination growth, survival and reproduction of other organism near them.

  • These biochemical can be beneficial or have negative effect on other organism and plant community. Alleochemicals are type of secondary metabolites and the alleochemical which

… (208 more words) …

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