Plant Growth And Development Test 1: 16/11/12
- 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
Questions: 10 | Attempts: 111439 | Last updated: Mar 22, 2022
-
Sample QuestionWhat controls most of the cell processes and contains the genetic information of DNA?
Questions: 10 | Attempts: 29096 | Last updated: Mar 22, 2022
Questions: 6 | Attempts: 11033 | Last updated: Mar 22, 2022
-
Sample QuestionWhich is NOT part of a plant?
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