M G Public High School mauganj Rewa MP
Half yearly evaluation class 7th 2022_23
subject science. mm 100
Attempt all the questions
Q 1 Fill in the blanks (1*5= 5 )
1. The food synthesized by the plant is stored as---------------------.
2. Amoeba digested its food in the ------------
3. Rearing of silk worm is called-------------
4. Temperature is measured in degree--------
5. Bases turn -----------Litmus to----------------
Q 2 tick true or false. (1*5=5)
1. Tooth decay is caused by the presence of a base.
2. Heat is a form of energy.
3. Silk worm feeds an Mulberry leaves.
4. Digestion of starch starts in the stomach.
5. Carbon dioxide is released during photosynthesis.
Q 3 choose the correct options (1*5=5)
1. Amrebel is an example of (a)autotroph (b) parasite (c) saprotroph (d) host
2. Fat is completely digested in the (a) stomach (b) mouth (c) small intestine (d) large intestine
3. Mooga is the strongest variety of (a) silk (b) wool (c) cotton (d) none of these
4. By which method sun's heat reaches to earth (a) conduction (b) convection (c) radiation (d) conduction and convection
5. Bases are (a)sour in test (b) sweet in test (c) bitter in test (d) none of the above
Q.4]: Match the column A and B. (1*6=6)
Column A. Column B
chlorophyll. bacteria nitrogen. hetrotroph Amar bail. Pitcher plant
Stomata. Parasite
animal. leaf insect. leaf
Q 5 One word / one sentence questions
(1*5=5)
1. Give an example of symbiotic relationship.
2. Which organ produces bile ?
3. Name one disease caused to Sheep.
4. Which colour is good absorber of heat
5. Write the name of any two bases.
Q 6 differentiate between (4*3=12)
1. Autotrophic nutrition and heterotrophic nutrition.
2. Acids and bases.
3. Conductors and insulators of heat.
4. Clinical thermometer and laboratory thermometer.
Q 6 write short note on ( 5*2=10 )
1. Photosynthesis
2. digestion
3. sericulture
4. thermometer
5. indicators
Q 7 answer this questions :- ( 13*4=52)
1. What is villi ? what is their location and function ?
2. why do we get instant energy from glucose ?
3. Distinguish between a parasite and saprotroph ?
4. why do organisms need to take food ?
5. Describe the process of neutralization with the help of an example ?
6. How would you show that setting of curd is a chemical change ?
7. Describe how crystals of copper sulphate are prepared ?
8. explain how painting of an iron gate prevent it from rusting ?
9. Differentiate between physical change and chemical change. ?
10. Describe the life cycle of silk Moth. ?
11 . Describe the occurrence of land Breeze ?
12. Explain why an antacid tablet is taken when you suffer from acidity ?
13. Can we survive only on raw, leafy vegetables/grass ? discuss.
14. convert it into degree celsius (a) 44.9`c. (b) 99.9`c
15. write the formulae off these compounds :- sodium hydroxide, hydrochloric acid, lime water, common salt,
16. List the differences between clayey soil and sandy soil.
17. How do elephant living in the tropical rainforest adapt itself.
18. Explain why holes are made in hanging banners and hoardings.
