Science (English Medium) Class 11 - CBSE Question Bank Solutions for Biology

In animals there are special glands secreting hormones, whereas there are no glands in plants. Where are plant hormones formed? How are the hormones translocated to the site of activity?

In a slide showing different types of cells can you identify which type of the cell may be meristematic and the one which is incapable of dividing and how?

On germination a seed first produces shoot with leaves, flowers appear later, How is this advantageous to the plant?

Hepato-pancreatic duct opens into the duodenum and carries ______.

Liver is the largest gland and is associated with various functions. Choose which is not correct from the following.

Does gall bladder make bile?

What is pancreas? Mention the major secretions of pancreas that are helpful in digestion.

List the organs of human alimentary canal and name the major digestive glands with their location.

What is the role of gall bladder? What may happen if it stops functioning or is removed?

What are the various enzymatic types of glandular secretions in our gut helping digestion of food? What is the nature of end products obtained after complete digestion of food?

Discuss the role of hepatic – pancreatic complex in digestion of carbohydrate, protein and fat components of food.

Regarding the functions of our respiratory system, mark the wrong entry.

A person suffers punctures in his chest cavity in an accident without any damage to the lungs. Its effect could be ______.

Which of the following statements is incorrect regarding respiratory system?

A fluid filled double membranous layer surrounds the lungs. Name it and mention its important function.

For completion of respiration process, write the given steps in sequential manner

1. Diffusion of gases (O₂ and CO₂) across alveolar membrane.
2. Transport of gases by blood.
3. Utilisation of O₂ by the cells for catabolic reactions and resultant release of CO₂.
4. Pulmonary ventilation by which atmospheric air is drawn in and CO₂ rich alveolar air is released out.
5. Diffusion of O₂ and CO₂ between blood and tissues.

Which of the following statements is incorrect?

What physiological circumstances lead to erythroblastosis foetalis?

Briefly describe the following:

Anaemia

Briefly describe the following:

Erythroblastosis foetalis