Ncert solutions science class 10 Solutions for Chapter 3 life processes

Exercises in Chapter 3 life processes Grade 10

Life Processes - Set 1

Life Processes - Set 2

Life Processes - Set 3

Life Processes - Set 4

Life Processes - Set 5

Life Processes - Set 6

Questions in Life Processes - Set 1

Due to which of the following reason it is insufficient to meet the oxygen requirements of multicellular organisms by difussion?

Questions in Life Processes - Set 2

How is the small intestine designed to absorb digested food?

What is the function of digestive enzymes?

Where do plants get each of the raw materials required for photosynthesis

Questions in Life Processes - Set 3

By which of the following ways oxygen and carbon dioxide is transported in human beings?

Which of the following statement is TRUE for lungs?

Questions in Life Processes - Set 4

The human circulatory system consists of a pumping organ X that pumps Y throughout the body. The Z are small vessels that carry the blood within them and transport it throughout the body. Identify X, Y and Z.

Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds?

What are the components of the transport system in highly organized plants?

How are water and minerals transported in plants?

Questions in Life Processes - Set 5

Assertion (A): Water is reabsorbed in the descending loop of Henle.

Reason (R): The ascending loop of Henle is completely impermeable to water.

The cellular gaseous waste produced during the process of respiration in plants is .......................................

Which of the following is the method used by plants to get rid of excretory products?

State whether the following statement is TRU or FALSE:

Urobilin in urine imparts color to the urine.

Questions in Life Processes - Set 6

The breakdown of pyruvate to give carbon dioxide, water and energy takes place in ...............................

The oxygen liberated during photosynthesis comes from ..............................

The leaves of the plant first prepare food “A” by photosynthesis. Excess of food “A” later gets converted into food “B”. What are “A” and “B”?

Identify!

P are organisms that cannot locomote. These organisms use Q and R to prepare glucose as a food with the help of a green coloured pigment S present in the cell organelle T of the leaves, in presence of light. This process is called U. The excess of food prepared by these organisms is stored in the form of V which gives a bluish-black colouration in reaction with iodine solution.

Identify P,Q,R,S,T,U,V from the given options.

The kidneys in human beings are a part of the system for ..........................................

How are fats digested in our bodies? Where does this process take place?

What is the role of saliva in the digestion of food?

What are the necessary conditions for autotrophic nutrition and what are its byproducts?

The table given below shows the differentiating points between aerobic respiration and anaerobic respiration:

Aerobic Respiration	Anaerobic Respiration
1. It requires oxygen.	1. It does not require oxygen.
2. Incomplete breakdown of glucose takes place.	2. Complete breakdown of glucose takes place.
3. 38 ATP are produced.	3. 2 ATP are produced.
4. Ethanol carbon dioxide are the byproducts.	4. Carbon dioxide and water are the byproducts.