MCQ on fruits canopy management: most important question with answers
MCQ on fruits canopy management:
1-a. The use of plant hormones like Cycocel in canopy management primarily helps in:
1-b. Cut made anywhere below the terminal bud on a shoot but not a total removal of the shoot is called:
a) Topping
b) Heading back
c) Thinning
d) Pinching
Answer: b) Heading back
2. The science of cutting away a portion of the plant for horticultural purposes is called:
a) Grafting
b) Pruning
c) Fertilization
d) Planting
Answer: b) Pruning
3. Strong growth at the top of the trees, at the expense of weaker growth on the lower level is known as:
a) Apical dominance
b) Lateral growth
c) Vertical dominance
d) Canopy management
Answer: a) Apical dominance
4. Canopy management is the manipulation of tree canopies to optimize the production of:
a) Leaves
b) Fruits
c) Flowers
d) Roots
Answer: b) Fruits
5. Which of the following promotes lateral shoot development of young cherry trees?
a) Gibberellic acid
b) Ethylene
c) Auxin
d) Cycocel
Answer: d) Cycocel
6. Cycocel is also called:
a) Gibberellic acid
b) Chlormequat chloride
c) Naphthalene acetic acid
d) Cytokinin
Answer: b) Chlormequat chloride
7. Cytokinins are also called:
a) Auxins
b) Kinetins
c) Gibberellins
d) Abscisic acid
Answer: b) Kinetins
8. Chemical compounds that alter plant growth and development by modifying natural hormonal action are called:
a) Fertilizers
b) Plant growth regulators
c) Pollens
d) Nutrients
Answer: b) Plant growth regulators
9. Which type of training system is used in peaches?
a) Central leader system
b) Open center system
c) Modified leader system
d) Espalier system
Answer: b) Open center system
10. Pinching of unwanted shoots is done to 3 to 5 cm from:
a) The main stem
b) The terminal bud
c) The root tip
d) The first branch
Answer: b) The terminal bud
11. Pruning scaffold branches should have a crotch angle of:
a) 30 to 45 degrees
b) 45 to 60 degrees
c) 60 to 75 degrees
d) 90 degrees
Answer: b) 45 to 60 degrees
12. Tools used for tip pruning and cutting out shoots and suckers are:
a) Shovel
b) Hoe
c) Pruning shears
d) Rake
Answer: c) Pruning shears
13. A primary limb that forms the tree canopy is called:
a) Side branch
b) Scaffold branch
c) Leader branch
d) Lateral branch
Answer: b) Scaffold branch
14. The leader of the vertical stem of the top is called a:
a) Lateral leader
b) Central leader
c) Auxiliary leader
d) Side stem
Answer: b) Central leader
15. Lower branches are stronger and outgrow the top of the tree due to:
a) Apical dominance
b) Lateral dominance
c) Reduced apical dominance
d) Light intensity
Answer: c) Reduced apical dominance
16. Heading back of the mango plant when they attain the age of 1 year at that height of:
a) 0.5 meters
b) 1 meter
c) 1.2 to 1.5 meters
d) 2 meters
Answer: c) 1.2 to 1.5 meters
17. Pruning of surplus leaves is a common operation in which fruit cultivation?
a) Citrus cultivation
b) Grape cultivation
c) Apple cultivation
d) Banana cultivation
Answer: a) Citrus cultivation
18. The feature of the ideal canopy is:
a) Good root spread
b) Good light penetration
c) Thick foliage
d) High tree height
Answer: b) Good light penetration
19. A phloem interruption technique used to stimulate lateral branching from buds that would not normally grow is called:
a) Girdling
b) Grafting
c) Layering
d) Pollarding
Answer: a) Girdling
20. The removal of the apical bud of shoots or spurs during the growing season is called:
a) Topping
b) Pinching
c) Heading back
d) Thinning
Answer: b) Pinching
21. Which of the following is the primary objective of pruning in fruit trees:
a) To promote flower production
b) To control the height of the tree
c) To improve air circulation and light penetration
d) To increase the number of leaves
Answer: c) To improve air circulation and light penetration
22. Which hormone is commonly used to promote rooting in cuttings:
a) Ethylene
b) Auxin
c) Cytokinin
d) Gibberellin
Answer: b) Auxin
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