DPS–MIS, DOHA- QATAR
REVISION QUESTION BANK –MAY 2016-17
GRADE 7 BIOLOGY
Submission Date: 5.6.16
CHAPTER 1: NUTRITION IN PLANTS
Name the following:
1. The pigment that captures solar energy during photosynthesis.
2. The bacteria that live in the root nodules of leguminous plants.
3 .The gas released during photosynthesis.
4. An organism that nourishes a parasite totally or partially.
5. The pores through which the leaves exchange the gases.
6. The ultimate source of energy for all living organisms.
ANSWER THE FOLLOWING QUESTIONS
1. a. What is photosynthesis?
b. Explain this process with the help of a chemical equation.
c. Mention the importance of this process.
2. a. What are the essential factors for photosynthesis?
b. Name the cells that regulate the opening and closing of stomata.
c. Name the cells that capture sunlight during photosynthesis.
3. Draw a schematic diagram to show autotrophic nutrition and explain it.
4. a. Classify animals based on their mode of nutrition and give one example for each.
b. What are parasites? Give an example of a plant parasite and mention its adaptive feature.
c. What are saprophytes? How are they different from autotrophs?
5. a. Give two examples of symbiotic relationship found in nature and explain.
b. What is compost? How is it useful?
Give reason for the following statements:
1. Farmers need not apply nitrogenous fertilizer in the field if legumes are grown.
2. Farmers add manure to the soil.
3. For testing the presence of starch in a leaf, first the leaf is dipped in boiling water and then boiled in alcohol.
CHAPTER:2 NUTRITION IN ANIMALS
Name the following:
1 .The largest chamber of ruminant stomach.
2. The projections on the inner wall of ileum of human beings.
3. The smallest chamber of the ruminant stomach.
4. An enzyme present in gastric juice.
5. The semi -digested food that a ruminant regurgitates.
6. The type of teeth that are adapted for biting food.
Answer the following:
1. What is tooth cavity?
2.Differentiate between -
a) Diarrhoea and constipation.
b) Temporary teeth and permanent teeth
c) Intracellular and extracellular digestion
d)liver and pancreas
3.With the help of a diagram explain nutrition in amoeba.
4.What is the speciality of the ruminant stomach?
5. Complete the table.
Digestive Juice / Secreted by / Function(s)Saliva
Gastric Juice
Bile
Pancreatic Juice
Intestinal Juice
Give reason for the following statements:
a. A person suffering from diarrhoea is given ORS.
b. A person suffering from constipation should include roughage in the diet.
c. Ruminants can digest cellulose.
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