Science (English Medium) कक्षा ११ - CBSE Question Bank Solutions

Write short note on the following:

Coronary Artery Disease

Which of the following is removed from our body by lungs?

Wax secreting gland present in the ear canal is called ______.

The part of internal ear responsible for hearing is ______.

The organ of corti is a structure present in ______.

Comment upon the role of ear in maintaining the balance of the body and posture.

Arrange the following in the order of reception and transmission of sound wave from the ear drum:

Cochlear nerve, external auditory canal, eardrum, stapes, incus, malleus, cochlea.

While travelling at a higher altitude, a person complains of dizziness and vomiting sensation. Which part of the inner ear is disturbed during the journey?

What is the function ascribed to Eustachian tube?

Explain the structure of middle and internal ear with the help of diagram.

Leydig cells produce a group of hormones called ______.

List the hormones secreted by the following:

Testis

Describe briefly the four major groups of Protozoa.

What are the characteristic features of Euglenoids?

Draw a neat diagram of digestive system of frog.

Mention the function of the following - Ureters in frog

Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.

Describe the important properties of enzymes.

Distinguish between Cyclic photophosphorylation and Non-cyclic photophosphorylation.

Naked cytoplasm, multinucleated and saprophytic are the characteristics of ______.