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Which of the following… (Class 10 Science 2024, Q8)

questionbuddy.in/q/cbse-10-science-2024-31-2-1-q8-true-human-heart-right-atrium

ScienceCBSE Class 10 · Board exam 2024, set 31/2/1 · 1 mark · MCQ

CBSE Class 10 Science 2024: question 8

Set in the CBSE Class 10 board exam of 2024, paper 31/2/1, section A, question 8, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q8 · 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 through vena cava from upper and lower body.
(d) Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.

  1. (A)(a)
  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 31/2/1.

Hints

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

Hint 1

Which side of the heart carries oxygenated blood?

Hint 2

Which chamber does the aorta leave from?

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: oxygenated blood from the lungs enters the left atrium through the pulmonary vein. (d) is false: the aorta leaves the left ventricle, not the atrium.

    ½ mark

  2. (b) and (c) are true: the left atrium passes blood to the left ventricle, which pumps it to the body, and the right atrium receives deoxygenated blood from the vena cava. Option (C) is correct.

    ½ mark

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

Where the marks are

  • Selects option (C) (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 31/2/1: 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.