Download App

The circulatory system — Biology STD 10 — Question

ICSE BoardEnglish MediumSTD 10BiologyThe circulatory system1 Mark
MCQ
Heart sounds are produced due to ________ .
  • ✓
    closure of tricuspid and bicuspid valves
  • B
    rushing of blood through valves producing turbulence
  • C
    closure of atrioventricular and semilunar valves
  • D
    entry of blood into auricles
✓

Answer

Correct option: A.
closure of tricuspid and bicuspid valves
(a) closure of tricuspid and bicuspid valves
(b) closure of aortic and pulmonary valves
(c) rushing of blood through valves producing turbulence

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from The circulatory system→The circulatory system — all question types→Biology STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

In hot, dry regions, plants adapt to reduce water loss. Cacti have thick water-storing stems and spiny leaves. Acacia trees have small, waxy leaves and deep roots. Succulents store water in thick leaves and have few stomata that open at night.
Which of the following is NOT an adaptation to reduce excessive transpiration?
→
Transpiration is highest during :
→
The prehistoric man which lived on earth during late Pleistocene period was:
→
Cell membrane of a cell is
→
Pancreas is a mixed gland in which:
→
Vasopressin is concerned with:
→
Which division takes most time?
→
Cutting and ligation of vas deferens is called
→
Minimum coiling in chromosome is at ________________
→
Chromosomes largely consist of $.........$
→