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Which of the following… (Class 10 Science 2024, Q11)

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ScienceCBSE Class 10 · Board exam 2024, set 31/3/1 · 1 mark · MCQ

CBSE Class 10 Science 2024: question 11

Set in the CBSE Class 10 board exam of 2024, paper 31/3/1, section A, question 11, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q11 · 1 mark · MCQLife Processes

Which of the following statement(s) is (are) true about human heart ?
(a) Right atrium receives oxygenated blood from lungs through pulmonary artery.
(b) Left atrium transfers oxygenated blood to left ventricle which sends it to various parts of the body.
(c) Right atrium receives deoxygenated blood from different parts of the body through vena cava.
(d) Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.

  1. (A)(b) only
  2. (B)(a) and (d)
  3. (C)(b) and (c)
  4. (D)(b) and (d)

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 31/3/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Oxygenated blood enters the left side of the heart.

Hint 2

Which chamber pumps blood into the aorta?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. (a) is false. The left atrium (not the right) receives oxygenated blood from the lungs, through the pulmonary vein. (d) is false. The aorta carries blood from the left ventricle, not from the left atrium.

  2. (b) is true: left atrium → left ventricle → body. (c) is true: the right atrium receives deoxygenated blood through the vena cava. The answer is (b) and (c), option (C).

    1 mark

Answer: (b) and (c), option (C)

Where the marks are

  • Identifies (b) and (c) as correct (1 mark)

Revise the chapter

  • Chapter: Life Processes (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Life Processes, one at a time, marked against the answer key and marking points.Back to the full paper2024 board paper, set 31/3/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.