NCERT solutions Science Textbook for Class 10 chapter 6 Life Processes



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Chapter 6 - Life Processes

Page 95

 Why is diffusion insufficient to meet the oxygen requirementsof multi-cellular organisms like humans

Q 1 | Page 95 | view solution

What criteria do we use to decide whether something is alive?

Q 2 | Page 95 | view solution

What are outside raw materials used for by an organism?

Q 3 | Page 95 | view solution

 What processes would you consider essential for maintaining life?

Q 4 | Page 95 | view solution

Page 101

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

Q 2 | Page 101 | view solution

What is the role of the acid in our stomach?

Q 3 | Page 101 | view solution

 How is the small intestine designed to absorb digested food?

Q 5 | Page 101 | view solution

Page 105

What are the different ways in which glucose is oxidized to provide energy in various organisms?

Q 2 | Page 105 | view solution

How is oxygen and carbon dioxide transported in human beings?

Q 3 | Page 105 | view solution

How are the lungs designed in human beings to maximize the area for exchange of gases?

Q 4 | Page 105 | view solution

Page 110

What are the components of the transport system in human beings? What are the functions of these components?

Q 1 | Page 110 | view solution

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

Q 2 | Page 110 | view solution

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

Q 3 | Page 110 | view solution

 How are water and minerals transported in plants?

Q 4 | Page 110 | view solution

 How is food transported in plants?

Q 5 | Page 110 | view solution

Page 112

Describe the structure and functioning of nephrons

Q 1 | Page 112 | view solution

What are the methods used by plants to get rid of excretory products?

Q 2 | Page 112 | view solution

How is the amount of urine produced regulated?

Q 3 | Page 112 | view solution

Page 113

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

(b) respiration.

(c) excretion.

(d) transportation.


Q 1 | Page 113 | view solution

The xylem in plants are responsible for
(a) transport of water.
(b) transport of food.
(c) transport of amino acids.
(d) transport of oxygen.

Q 2 | Page 113 | view solution

The autotrophic mode of nutrition requires
(a) carbon dioxide and water.
(b) chlorophyll.
(c) sunlight.
(d) all of the above.

Q 3 | Page 113 | view solution

 The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm.
(b) mitochondria.
(c) chloroplast.
(d) nucleus.

Q 4 | Page 113 | view solution

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

Q 5 | Page 113 | view solution

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

Q 6 | Page 113 | view solution

What are the necessary conditions for autotrophic nutrition and what are its by-products?

Q 7 | Page 113 | view solution

What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

Q 8 | Page 113 | view solution

How are the alveoli designed to maximise the exchange of gases?

Q 9 | Page 113 | view solution

 What would be the consequences of a deficiency of haemoglobin in our bodies?

Q 10 | Page 113 | view solution

Describe double circulation in human beings. Why is it necessary?

Q 11 | Page 113 | view solution

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Q 13 | Page 113 | view solution

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