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Science Assertion (A) & Reason (B) MCQ

Getting to Know Plants · CBSE STD 6 (CBSE - English Medium). 3 questions.

Questions

Assertion (A) & Reason (B) MCQ

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3 questions · 2 auto-graded MCQ + 1 self-marked written.

MCQ 11 Mark
Direction: The questions in this segment consists of two statements, one labelled as "assertion $A"$ and the other labelled as "reason $R"$ You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): The parts of a typical flower are sepals and petals only.
Reason (R): The parts of stamen are filament and anther.
  • A
    Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
  • B
    Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$
  • C
    $A$ is true but $R$ is false
  • ✓
    $A$ is false but $R$ is true
Answer
Correct option: D.
$A$ is false but $R$ is true

(Note: The parts of a typical flower are sepals, petals, stamen and pistil).

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MCQ 21 Mark
Direction: The questions in this segment consists of two statements, one labelled as "assertion $A"$ and the other labelled as "reason $R"$ You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): The minerals dissolved in water move up in stem along with water.
Reason (R): The stem bears leaves, flowers and fruits.
  • A
    Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
  • ✓
    Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$
  • C
    $A$ is true but $R$ is false
  • D
    $A$ is false but $R$ is true
Answer
Correct option: B.
Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$
Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$
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Question 31 Mark
Write the difference between reticulate and parallel venation. Give examples.
Answer
If the design made by veins in the leaf is net like on both side of mid rib, the venation is reticulate. E.g. rose. If the veins are parallel to each other, the venation is parallel. E.g. wheat.
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