Plant Growth And Development Test 1: 16/11/12

10 Questions | By A_nagvenker | Updated: Mar 21, 2022 | Attempts: 777

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1.

Substances which originate at the tip of stem and control growth elsewhere are:
- A.
  
  Vitamins
- B.
  
  Enzymes
- C.
  
  Food Materials
- D.
  
  Phytohormones / Auxins
2.

Abscissic acid controls:
- A.
  
  Shoot elongation
- B.
  
  Cell elongation and cell wall formation
- C.
  
  Cell division
- D.
  
  Leaf fall and dormancy
3.

Cytokinin:
- A.
  
  Is a hormone whose main function is the induction of cell division and delay in senescence
- B.
  
  Is the process of cell division
- C.
  
  Refers to cell movements
- D.
  
  Causes dormancy
4.

Cell elongation in plants is caused by:
- A.
  
  Auxin
- B.
  
  Gibberellin
- C.
  
  Florigen
- D.
  
  Traumatin
5.

Gibberellin was first extracted from:
- A.
  
  Gibberella fujikuroi or Fusarium moniliforme
- B.
  
  Gelidium
- C.
  
  Gracelaria
- D.
  
  Aspergillus
6.

Genetic dwarfism can be overcome by the treatment of:
- A.
  
  Gibberellins
- B.
  
  Ethylene
- C.
  
  Anti-gibberellin
- D.
  
  Auxin
7.

Which of the following is capable of delaying in senescence?
- A.
  
  Cytokinins
- B.
  
  Auxins
- C.
  
  Gibberellins
- D.
  
  Ascorbic acid
8.

The ripening of fruits can be accelerated by:
- A.
  
  Reducing the supply of water to plant when fruits are maturing
- B.
  
  Increasing the supply of nitrogen to the atmosphere surrounding them
- C.
  
  Warming up the surrounding artificially
- D.
  
  Artificially adding ethylene gas to the atmosphere surrounding them
9.

Pineapple can be made to flower in off season by:
- A.
  
  Ethylene
- B.
  
  Zeatin
- C.
  
  Short days
- D.
  
  Low temperature
10.

A well known naturally occuring auxin is:
- A.
  
  2,4-D
- B.
  
  Indole Acetic Acid
- C.
  
  NAA
- D.
  
  Maleic Hydrazide