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

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 ______.

Suppose you accidentally find an old preserved permanent slide without a label. In your effort to identify it, you place the slide under microscope and observe the following features:-

1. Unicellular
2. Well defined nucleus
3. Biflagellate–one flagellum lying longitudinally and the other transversely.

What would you identify it as? Can you name the kingdom it belongs to?

Match the following and choose the correct option

What part of the plant would show the following:

Radial vascular bundle

Distinguish between the following:

Open and closed vascular bundles

Match the following and choose the correct option

Name the process by which a tadpole develops into an adult frog.

The digestive system of frog is made of the following parts. Arrange them in an order beginning from mouth.

Mouth, oesophagus, buccal cavity, stomach, intestine, cloaca, rectum, cloacal aperture