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Question
Observe the experiment sets [A] and [B].
Observe the test tube A and B. From the list given below, choose the combination of response of shoot and root that are observed in B.
[A]
[B]
Observe the experiment sets [A] and [B].
Observe the test tube A and B. From the list given below, choose the combination of response of shoot and root that are observed in B.
[A]
[B]
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Solution
The correct option is D Positive phototropism and positive geotropism
Plants show movement in response to the stimulus present in the environment, these movements are called tropic movements or tropism.
∙ Phototropism is movement of plants in response to light.
∙ Geotropism is movement of plants in response to gravitational force.
∙ Positive phototropism is a type of tropic movement exhibited by the plant towards the light source.
∙ Positive geotropism is a type of tropic movement exhibited by the plant towards the gravity.
∙ In the test tube B on 5th day we can observe that the shoot of the plant has grown towards the light and showing positive phototropism, while the root has grown towards the gravitational force showing positive getropism.
Hence, option A is correct.
Plants show movement in response to the stimulus present in the environment, these movements are called tropic movements or tropism.
∙ Phototropism is movement of plants in response to light.
∙ Geotropism is movement of plants in response to gravitational force.
∙ Positive phototropism is a type of tropic movement exhibited by the plant towards the light source.
∙ Positive geotropism is a type of tropic movement exhibited by the plant towards the gravity.
∙ In the test tube B on 5th day we can observe that the shoot of the plant has grown towards the light and showing positive phototropism, while the root has grown towards the gravitational force showing positive getropism.
Hence, option A is correct.
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