What is normal breathing rate in an adult man at rest?

Why do the divers carry oxygen for artificial respiration?

Which cartilage of larynx forms “Adam’s apple” in man?

Why is blood called a ‘liquid connective tissue’?

Give one functional difference between RBC and WBC.

Arrange the terms in correct sequence:

Glomerulus, renal vein, efferent arterioles, renal artery, afferent arterioles, secondary capillaries.

Why is right kidney slightly lower in position compared to the left kidney?

Why leaves become yellow in the absence of light?

Bile juice does not contain any digestive enzymes, yet it is essential for digestion, why so? Explain.

Name two proteases in pancreatic juice. What are their specific roles?

Name two animals having cutaneous respiration. What special features of the skin make cutaneous respiration effective?

How are inspiration and expiration brought about in human beings?

If one hold his breath after expiration for about 30 sec., would there still be occurring any exchange of respiratory gases in the lung during this period? Explain.

Name the water and minerals conducting element of non-flowering plants. Mention how conduction takes place in it.

Give a schematic diagram to show absorption of water through root hairs.

Differentiate between ureter and urethra.

Distinguish between photosynthesis and respiration.

With a schematic diagram, explain the overall process of respiration.

Differentiate between left lung and right lung of humans.

Differentiate between lymphatic capillaries and blood capillaries.

Draw a sieve tube and label the various parts. Name the dead elements of the phloem.

Name the main organs of the human digestive system in the order they participate in the process of digestion. Describe how digestion of carbohydrates and proteins take place in our body.

What is meant by breathing? What happens to the rate of breathing during vigorous exercise and why?

Define translocation with respect to transport in plants. What is it essential for plants? Where in plants are the following synthesized?

(i) Sugar

(ii) Hormone

Explain with a schematic representation the exchange of gases in tissues.

Explain the various functions of blood.

(a) Name the blood vessel that brings deoxygenated blood to the human heart.

(b) Which chamber of the human heart receives deoxygenated blood?

(c) Describe how deoxygenated blood from this chamber is sent to lungs for oxygenation.

You were traveling with your family in your car. The car was driven by your father. On your way, you saw a biker on the road who met an accident is bleeding profusely. Your mother wanted to stop and help the accident victim. Your father however did not want to stop as he felt police may harass them if they stop?

(a) What values were shown by your mother?

(b) What happens if a person bleeds profusely?

(c) What will you do if the hospital refuses to provide treatment unless the accident case is registered by police?