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Test: Physiological Effects of Plant Growth Promoters (July 19) - NEET MCQ


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10 Questions MCQ Test - Test: Physiological Effects of Plant Growth Promoters (July 19)

Test: Physiological Effects of Plant Growth Promoters (July 19) for NEET 2024 is part of NEET preparation. The Test: Physiological Effects of Plant Growth Promoters (July 19) questions and answers have been prepared according to the NEET exam syllabus.The Test: Physiological Effects of Plant Growth Promoters (July 19) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Physiological Effects of Plant Growth Promoters (July 19) below.
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Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 1

What are the two major groups into which plant growth regulators are broadly classified based on their actions?

Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 1
Plant growth regulators are classified into two major groups based on their actions: plant growth promoters and plant growth inhibitors. Plant growth promoters include auxins, gibberellins, and cytokinins, while plant growth inhibitors include abscisic acid and ethylene. These regulators play crucial roles in controlling various aspects of plant growth and development.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 2

What is the primary function of auxins among plant growth regulators?

Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 2
Auxins have various functions, one of which is to facilitate flowering in plants. They also play roles in root initiation in stem cuttings, preventing the early dropping of leaves and fruits, and regulating xylem differentiation and cell division. Additionally, auxins are used as herbicides and in fruit production without preceding fertilization.
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Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 3

Which plant growth regulator is used by the brewing industry to accelerate the malting process?

Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 3
Gibberellins are used by the brewing industry to accelerate the malting process. They have various functions, including delaying senescence in fruits, promoting leaf expansion, breaking bud and seed dormancy, and facilitating elongation of fruits. In brewing, they help in the production of malted barley.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 4
What is the term for the increase in the diameter of the plant body by the division of the secondary meristem?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 4
Secondary growth refers to the increase in the diameter of the plant body by the division of the secondary meristem. This is in contrast to primary growth, which involves the lengthening of the plant body.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 5
Where are cytokinins primarily produced in plants?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 5
Cytokinins are primarily produced in the regions where cell division occurs, which is mostly in the roots and shoots of plants. They play a role in promoting cell division, lateral bud growth, and delaying the aging of leaves.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 6
Which factor greatly influences plant growth by speeding up processes like transpiration, photosynthesis, and germination?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 6
Temperature greatly influences plant growth by speeding up processes like transpiration, photosynthesis, and germination at higher temperatures. Conversely, low temperatures can slow down plant growth.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 7
Which plant growth regulator is involved in the initiation of roots in stem cuttings?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 7
Auxins are involved in the initiation of roots in stem cuttings, making them essential for plant propagation through cuttings.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 8
Which plant growth regulator is used to keep lawns free from weeds and is utilized by gardeners for this purpose?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 8
Auxins are used by gardeners to keep lawns free from weeds. They can prevent the early dropping of leaves and fruits and promote healthy plant growth.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 9
What is the term for the production of stem, leaves, and branches in plants, excluding the production of flowers?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 9
Vegetative growth involves the production of stem, leaves, and branches in plants, excluding the production of flowers. It is essential for the overall development and structure of the plant.
Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 10
What is the primary function of ethylene among plant growth regulators?
Detailed Solution for Test: Physiological Effects of Plant Growth Promoters (July 19) - Question 10
Ethylene primarily functions to delay senescence in fruits, helping to extend their shelf life. It can also have various other effects on plant growth and development, depending on the context.
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