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Science Assertion - Reasoning [Bio-1 M]

Improvement in Food Resources · CBSE STD 9 (CBSE - English Medium). 2 questions.

Questions

Assertion - Reasoning [Bio-1 M]

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2 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
  1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
  2. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
  3. Assertion is true but the Reason is false.
  4. The statement of the Assertion is false but the Reason is true.
Assertion: Manure contains large quantity of organic matter and also supplies small quantities of nutrients to the soil.
Reason: Manure can be classified as compost, vermicompost or green manure.
Answer
  1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

Explanation:

Cattle manure is basically made up of digested grass and grain. Cow dung is high in organic materials and rich in nutrients. It contains about 3 percent nitrogen, 2 percent phosphorus, and 1 percent potassium (3-2-1 NPK).

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Question 21 Mark
In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
  1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
  2. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
  3. Assertion is true but the Reason is false.
  4. The statement of the Assertion is false but the Reason is true.
Assertion: A healthy animal feeds regularly and has a normal posture.
Reason: Parasites live on the skin of cattle.
Answer
  1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

Explanation:

External parasites often annoy their hosts by biting, embedding, or otherwise irritating the skin. They can cause serious diseases, such as mange and scabies, which affect animals’ health and growth.

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Assertion - Reasoning [Bio-1 M] - Science STD 9 Questions - Vidyadip