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Question
Assertion: Plants produce food via photosynthesis when sunlight is available as a source of energy.
Reason: Many small plants like herbs and shrubs growing in the forest are adapted to very low light.
Assertion: Plants produce food via photosynthesis when sunlight is available as a source of energy.
Reason: Many small plants like herbs and shrubs growing in the forest are adapted to very low light.
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Solution
The correct option is B Both the assertion and reason are true but the reason is not the correct explanation for the assertion
Photosynthesis is the process by which plants use water, and carbon dioxide to create oxygen and energy (carbohydrates) in the presence of sunlight and chlorophyll. Hence light is an important abiotic factor for photosynthesis. Plants are dependent on light for photosynthesis and flowering (photoperiod).
The availability of light on land varies. All plants will not receive the same amount of sunlight. Many plants like herbs (wheat) and shrubs (China rose) which are very short and form in the lower layers in the forest and are overshadowed by tall, canopied trees. So they are adapted to carry out photosynthesis under very low light conditions. These plants have large leaves to capture as much sunlight as possible.
Therefore, both the assertion and reason are true but the reason is not the correct explanation for the assertion.
Figure : Different layers in forest
Photosynthesis is the process by which plants use water, and carbon dioxide to create oxygen and energy (carbohydrates) in the presence of sunlight and chlorophyll. Hence light is an important abiotic factor for photosynthesis. Plants are dependent on light for photosynthesis and flowering (photoperiod).
The availability of light on land varies. All plants will not receive the same amount of sunlight. Many plants like herbs (wheat) and shrubs (China rose) which are very short and form in the lower layers in the forest and are overshadowed by tall, canopied trees. So they are adapted to carry out photosynthesis under very low light conditions. These plants have large leaves to capture as much sunlight as possible.
Therefore, both the assertion and reason are true but the reason is not the correct explanation for the assertion.
Figure : Different layers in forestSuggest Corrections
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