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

Differentiate between pulvinus and petiole

Which one of the following cell types always divides by anticlinal cell division?

The lawn grass (Cynodon dactylon) needs to be mowed frequently to prevent its overgrowth. Which tissue is responsible for its rapid growth?

A muscle fibre tapers at both ends and does not show striations. Name the muscle fibre.

A homopolymer has only one type of building block called monomer repeated ‘n’ number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers usually made of ______.

Glycogen is a homopolymer made of ______.

The number of ‘ends’ in a glycogen molecule would be ______.

Starch, Cellulose, Glycogen, Chitin are polysaccharides found among the following. Choose the correct answer:

Cotton fibre ______

Starch, Cellulose, Glycogen, Chitin are polysaccharides found among the following. Choose the correct answer:

Exoskeleton of cockroach ______

Starch, Cellulose, Glycogen, Chitin are polysaccharides found among the following. Choose the correct answer:

Liver ______

Starch, Cellulose, Glycogen, Chitin are polysaccharides found among the following. Choose the correct answer:

Peeled potato ______

Which one of the following roles is not characteristic of an essential element?

Name a plant, which accumulate silicon.

Mycorrhiza is a mutualistic association. How do the organisms involved in this association benefit from each other?

Name the macronutrient which is a component of all organic compounds but is not obtained from soil.

What are essential elements for plants? Give the criteria of essentiality? How are minerals classifieds depending upon the amount in which they are needed by the plants?

With the help of examples describe the classification of essential elements based on the function they perform.

Which of the following exhibits the highest rate of respiration?

When does anaerobic respiration occur in man and yeast?

The product of glycolysis (under hypoxia) in skeletal muscle and anaerobic fermentation in yeast are respectively ______ and ______.