Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions for Biology

CO₂ dissociates from carbaminohaemoglobin when ______.

A major percentage (97%) of O₂ is transported by RBCs in the blood. How does the remaining percentage (3%) of O₂ transported?

State the different modes of CO₂ transport in blood.

The second heart sound (dubb) is associated with the closure of ______.

What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 ml?

Define the following terms and give their location?

Bundle of His

What is the significance of time gap in the passage of action potential from sino-atrial node to the ventricle?

Differentiate between tricuspid and bicuspid valve

What is the composition of sweat produced by sweat glands?

What is the role of sebaceous glands?

Fill in the blanks appropriately

What is the type of movable joint present between the atlas and axis?

Which one of the following pairs is incorrect?

Knee joint and elbow joint are examples of ______.

Match the following and mark the correct option

How do our bone joints function without grinding noise and pain?

Give the location of a ball and socket joint in a human body.

Calcium plays a very important role in the formation of bones. Write on the role of endocrine glands and hormones responsible for maintaining Calcium homeostasis.

Describe the role of the liver in excretion.

Describe the role of the lungs in excretion.