HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Zoology

What does a pacemaker do?

Differentiate between probiotics and pathogenic bacteria.

The limbless amphibian is ______.

Four chambered heart is present in ______.

Which of the following is not correctly paired?

Which of the following is an egg laying mammal?

Pneumatic bones are seen in ______.

List the features that all vertebrates show at some point in their development.

List three features that characterise bony fishes.

List the functions of air bladder in fishes.

Write the characteristics that contributes to the success of reptiles on land.

List the unique features of bird’s endoskeleton.

Which of the following substances in tobacco smoke damage the gas exchange system?

Which of the following best describes the process of gas exchange in the lungs?

A patient’s chart reveals that he has a cardiac output of 7500 mL per minute and a stroke volume of 50 mL. What is his pulse rate (in beats/min)

At any given time there is more blood in the venous system than that of the arterial system. Which of the following features of the veins allows this?

Distinguish between mitral valve and semi lunar valve.

Right ventricular wall is thinner than the left ventricular wall. Why?

What are the heart sounds? When and how are these sounds produced?

Select the correct biological term.

Destroyed in the liver and spleen after circulating in the blood for four months.