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Science Assertion - Reasoning (1 Marks)

MODEL PAPER - 2 [2026] · CBSE STD 10 (CBSE - English Medium). 2 questions.

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Assertion - Reasoning (1 Marks)

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2 questions · timed · auto-graded

Question 11 Mark
Assertion (A):Our body maintains blood sugar levels.
Reason (R): Pancreas secretes insulin which helps to regulate blood sugar levels in the body.
Answer
(A) Both A and R are true and R is the correct explanation of A .
Explanation:
The pancreas secretes insulin which helps to regulate blood sugar levels in the body. If the sugar level in the blood rises, they are detected by the cells of the pancreas which respond by producing more insulin. As the blood sugar level falls, insulin secretion is reduced.
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Question 21 Mark
Assertion (A): When pea plants (pureline) having round yellow seeds are crossed with pureline plants having wrinkled green seeds, then all pea plants obtained in $\mathrm{F}_{1}$ generation bear wrinkled green seeds.
Reason (R): Round and yellow seeds are dominant to wrinkled and green seeds.
Answer
(D) A is false but R is true.
Explanation:
When pureline pea plants having round yellow seeds are crossed with that of wrinkled green seeds then plant obtained in $\mathrm{F}_{1}$ are all with round yellow seeds as round yellow seeds are dominant to wrinkled green seeds.
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