Name the type of chemical substances tha...

Name the type of chemical substances that control the growth in plants.

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The correct Answer is:

Plant hormones

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The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards a source of light. The same chemical substance P has on opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R. (a) What is the chemical substance P? (b) State whether P prefers to remains in the sunlit side of a stem or in shade. (c) What is the effect of substance P on the rate of growth of (i) a root, and (ii) a stem? (d) What is the name of process (i) Q, and (ii) R? (e) What is the general name of chemical substances like P? Name another substance which belongs to this class of chemical substances.

Name the plant hormone that inhibits the growth of plants

LAKHMIR SINGH & MANJIT KAUR-CONTROL AND COORDINATION -Exercise

Name one plant hormone that promotes growth and another plant hormone ...
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Name one example of the movement of a plant part which is very quick a...
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Name the type of chemical substances that control the growth in plants...
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What is the stimulus in: (a) phototropism? (b) geotropism? (c) chemotr...
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Give the scientific terms used to represent the following: (a) Bendi...
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Give one example of the movement of a plant part which is caused by th...
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Give one example each of a plant part: (a) which is positively hydro...
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Which of the following is a growth movement and which is not? (a) fo...
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Name the plant part: (a) which bends in the direction of gravity but...
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To which directional stimuli do: (a) roots respond? (b) shoots re...
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Fill in the following blanks: (a) A plant's response to light is cal...
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Plant parts show two types of movements, one dependent on growth and t...
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What is a plant hormone? Name four plant hormones. State one function ...
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(a) What does a root do in response to gravity? What is the phenomenon...
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(a) What does a stem (or shoot) do in response to gravity? What is thi...
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(a) What does a Mimosa pudica plant do in response to touch? What is t...
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(a) What does a plant root do in response to water? What is this pheno...
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What is a tendril? Name the two types of tendrils. What does a tendri...
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Name the five types of tropisms. How are tropic movements helpful to p...
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Define chemotropism. Give one example of chemotropism. State whether t...
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