Question:

Phytotron is a device by which

Updated On: Jul 27, 2022
  • mutations are produced in plants
  • plants are grown in controlled environment
  • protons are liberated
  • leaf fall occurs on abscission layer
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The Correct Option is B

Solution and Explanation

Phytotron is a device in which plants can be grown on a large scale in a range of rigidly controlled conditions of light, temperature of air and soil, humidity and composition of air water and nutrient content of soil etc. Individual controlled environment chambers, a common feature of most botanical laboratories, provide more limited, small scale control of environment. Both types of facility can be of immense value in experimental investigations of plant growth.
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Concepts Used:

Growth

Growth takes place all throughout the lifetime, but imminently. In the case of humans, the rate of growth is rapid until maturity. After achieving maturity, growth is gradual and slows down before it completely comes to an end.

Types of Growth:

  • Primary and Secondary Growth: In meristematic cells, the mitotic divisions at the root and shoot apex hike the length of the plant, called Primary Growth while Secondary meristem, which results in an increased diameter of the plant is commonly known as Secondary Growth.
  • Vegetative Growth: Prior to flowering, the growth in plants is known as vegetative growth and that includes the formation of leaves, branches, and stems.
  • Reproductive Growth: At this stage, the plants begin to flower which is a reproductive member of the plant.