The structure that separates the right and left ventricles of the heart is the: MCQ with Answer and Explanation

The structure that separates the right and left ventricles of the heart is the:
A. Valve
B. Aorta
C. Atrium
D. Septum
Answer: Option D
Solution (By JKSSB Mock Tests)
The interventricular septum is a thick muscular wall that divides the two ventricles, preventing mixing of oxygenated and deoxygenated blood. Valves prevent backflow, atria are upper chambers.

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Practice More Biology Questions

Question #1
The vector for dengue virus is:
A. Aedes aegypti mosquito
B. Tsetse fly
C. Culex mosquito
D. Anopheles mosquito

Correct Answer: Option A


Explanation:
Dengue is transmitted by Aedes aegypti, which also spreads chikungunya, Zika, and yellow fever. Anopheles transmits malaria, Culex filariasis, tsetse sleeping sickness.

This question belongs to: Science Biology
Question #2
Consider statements about scientists: 1. Gregor Mendel is the father of genetics. 2. Edward Jenner developed the smallpox vaccine. 3. Charles Darwin proposed the cell theory. Which are correct?
A. 1 and 3 only
B. 1, 2 and 3
C. 2 and 3 only
D. 1 and 2 only

Correct Answer: Option D


Explanation:
Gregor Mendel, through his pea plant experiments, established the fundamental laws of inheritance, earning him the title 'father of genetics'. Edward Jenner pioneered the concept of vaccination by developing the first successful smallpox vaccine using cowpox material. Charles Darwin proposed the theory of evolution by natural selection, not the cell theory (proposed by Schleiden and Schwann). Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #3
The term for the death of brain tissue due to lack of blood flow is:
A. Myocardial infarction
B. Embolism
C. Stroke
D. Aneurysm

Correct Answer: Option C


Explanation:
A stroke (cerebrovascular accident) occurs when blood supply to part of the brain is interrupted, causing tissue death. Myocardial infarction is heart attack, aneurysm is vessel ballooning, embolism is blockage by a traveling clot.

This question belongs to: Science Biology