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Assignment - Life Processes, Class 10, Science PDF Download

(I) Fill in the blanks ;

 

1. Hard palate has transverse ridges, the ......

 

2. Human teeth are thecodont, .............and ..............

3. Man bears 4 kinds of teeth :

(i) .................... (ii) .................... (iii) .................... and (iv) ....................

4. Bile and pancreatic ducts open into..............

5. Villi are found in ..............and .............

6. Appendicitis is inflammation of..............

7. Man's three pairs of salivary glands are...........and............

8. Succus entericus is the secretion of...............

9. Enzymes enterokinase activates ....................

10. Kwashiorkar is the disease caused by extreme .................... deficiency.

 

Match The column :

1. Match the contents of the cloumns-I, II and III (Double matching)

Column-I                Column-II                         Column-III

(1) Water split into    (A) Chemical energy          (P) Photolysis

(2) CO2                    (B) Hydrogen and oxygen  (Q) Raw materials for photosynthesis

(3) White light           (C) Water                         (R) Electromagnetic spectrum

(4) Light energy         (D) Vibgyor                       (S) Photosynthesis

 

True and False :

1. Rate of photosynthesis is maximum in green light.

2. Oxygen and water are the raw material for photosynthesis.

3. CO2 is release as a by product of light reaction.

4. Dark reaction occurs inside the stroma of chloroplast.

5. In photosynthesis chemical energy converts into light energy.

6. Guard cells regulate the opening and closing of stomata.

7. White light is composed of seven different colour.

8. Light reaction takes place in the presence of light.

 

(II) Fill in the blanks :

1. .................... is a natural source of light for photosynthesis.

2. Photosynthetic pigments absorb only .................... light from electromagnetic spectrum.

3. Chl-a and b absorb only .................... light and reflect .................... light.

4. "The process of absorption and conversion of .................... energy into .................... energy by green plants is called as photosynthesis".

5. .................... regulate the opening and closing of the stoma and also perform photosynthesis.

6. When the guard cells swell due to the entry of water, the stomata gets ....................

7. The water molecules split into hydrogen and oxygen with the help of .................... energy.

8. .................... is released as a by product of light reaction occuring during photosynthesis.

9. .................... reaction occurs inside stroma of chloroplasts where light energy is not captured.

10. At very high light intensity the photosynthesis is ....................

 

Answer Keys

(l )Fill in the blanks

1. Rugae 2. Heterodont, Diphyodont 3. (i) Incisors (ii) Canines (iii) Premolars (iv) Molars

4. Duodenum 5. Jejunum, Ileum 6. Vermiform Appendics

7. Parotid, Sublingual and submaxillary 8. Intestinal glands

9. Trypsinogen 10. Proteins

 

Match the following :

1(B,P), 2(C,Q), 3(D,R), 4(A,S)

 

True and False :

1. F 2. F 3. F 4. T 5. F 6. T 7. T 8. T

 

(II) Fill In The Bnalks :

1. Sun 2. White/Visible 3. Blue and Red, Green 4. Light, Chemical

5. Guard Cells 6. Opened 7. Light 8. Oxygen

9. Dark 10. Decreased

 

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FAQs on Assignment - Life Processes, Class 10, Science

1. What are the life processes in organisms?
Ans. Life processes in organisms refer to the essential activities that are necessary for their survival. These processes include nutrition, respiration, transportation, excretion, and reproduction.
2. How does nutrition contribute to the life processes in organisms?
Ans. Nutrition is a vital life process as it provides organisms with the necessary energy and nutrients to carry out other life processes. It involves the intake, digestion, absorption, and assimilation of food to obtain energy and raw materials for growth and repair.
3. What is the role of respiration in life processes?
Ans. Respiration is an essential life process as it provides organisms with the energy required for their survival. It involves the exchange of gases, such as oxygen and carbon dioxide, between the organism and its environment. Through respiration, organisms release energy from food molecules to perform various activities.
4. How is transportation important for life processes in organisms?
Ans. Transportation plays a crucial role in life processes as it allows the movement of substances within an organism. It enables the distribution of nutrients, hormones, gases, and waste products to different parts of the body. Transportation occurs through specialized systems like the circulatory system in animals and vascular tissues in plants.
5. Why is excretion necessary for life processes in organisms?
Ans. Excretion is vital for life processes as it helps in removing waste products and toxic substances from the body. It ensures the maintenance of a suitable internal environment for the proper functioning of organs and cells. Excretion occurs through various organs such as the kidneys, lungs, and skin, which eliminate waste materials like urine, carbon dioxide, and sweat.
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