Life Process

Q.

Assertion [A]: Digestion is a life processes.

Reason [R]: Digestion helps in obtaining energy from food.

1. Both statements are true. Statement 2 is the correct explanation of Statement 1.

2. Both statements are true. But Statement 2 is not the correct explanation of Statement 1.

3. Statement 1 is true. Statement 2 is false.

4. Statement 1 is false. Statement 2 is true.

Q. The _________ prevent the mixing of oxygenated and deoxygenated blood in the heart.​

1. septum
2. ventricle
3. atrium
4. aorta

Q. Which processes would be considered essential for maintaining life?

1. Nutrition and metabolism
2. Respiration
3. Transportation and excretion
4. All of the above

Q. What will happen if the septum is absent in the human heart? [2 marks]

Q.

Question 17

'Water does not provide nutrients, yet it is an important component of food.' Explain.

Q. The mode of nutrition in which organisms make their own food from simple substances is called nutrition.

1. heterotrophic
2. parasitic
3. autotrophic

Q. The long tubes that connect the kidneys to the urinary bladder are called _________.

1. A & B
2. Seminiferous tubule
3. Ureters
4. Urethra

Q. Circulatory system comprises of blood and heart only.

Q. One of the patients in a hospital had a complete blockage at the junction of the small intestine and the large intestine. The food he eats will not reach which of the following organs?

1. Oesophagus
2. Rectum
3. Stomach
4. Buccal cavity

Q. Think and answer.
We prepare a variety of foodstuffs and dishes at home. Are we then autotrophic organisms? <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> [Textbook Question 6a pg no.33]

Q. The causes for renal failure mentioned in the passage are __________.

1. Traditional cooking methods
2. Sweeteners used in packaged food
3. Increase in consumption of chemical additives through packaged food
4. Availability of packaged foods