CBSE Class 8 Science - Revision Assignments (2). Students are advised to refer to the attached assignments and practice them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the assignments to their children for practice.
REVISION ASSIGNMENT CLASS VIII
Multiple Choice Questions- Tick the correct answer
Q1. An example of a unicellular cell is
i. Euglena ii. Tapeworm iii. Grasshopper iv. All of these
Q2. The smallest cell in the human body is
i. White Blood Cells ii . Red Blood cells iii. Platelets iv. All of these
Q3. Cells that change their shape continuously
i. Amoeba ii. White blood cell iii. Red blood cell iv. Both i.& 2
Q4. Cell was discovered by
i. Robert Hooke ii. Louis Pastuer iii. A. Fleming iv. None of these
Q5. These are the structural and functional units of life
i. Tissue ii. Cell iii. Organ iv. Organism
II Very short answer type questions
i. With the help of which instrument can minute cells be observed?
ii. Define tissue.
iii. Complete the flow chart on the levels of organisation in multicellular organisms.
Cell ------------ --------------------- Organ system ---------------
iv. Hydra reproduces by ________________.
v. What are the green colour plastids fond in plants called? III Short answer type questions:
i. How do unicellular organisms differ from multicellular organisms?
ii. How is food assimilated in amoeba?
iii. What part of the cell can be called the brain of the cell? Why?
iv. The cells in a tissue have identical shapes and perform identical functions. Do you agree? Give reasons.
V . Match the following
i. Desert National Park a. Wild Boar
ii. Kaziranga National Park b. Royal Bengal Tiger
ii. Marine National Park c. Tiger
iv. Sunderbans National Park d. Elephant
v. Dudwa National Park e. Desert Fox
vi. Corbett National Park f. Black Buck
vii. Bandipur National Park g. Coral Reefs
IV. Long Answer Type questions
i. Why do you think parents and doctors get very worried if a child gets a head or spinal injury?
ii. “A diverse world of animals and plants is of great importance to all of us.”Give reasons to support this statement.
I. Multiple Choice Questions- Tick the correct answer
a. Nutrients are substances present in
i. Water ii. Food iii. Plant iv. Nutrition
b. Raw materials used for photosynthesis are
i. Carbon Dioxide ii. Water iii. Both a&b iv. None of these
c. Potato, tomato and pea are used to make vegetable curry. These are
i. Useful material ii. Good material iii. Raw material iv. Spicy material
d. Green plants are called
i. Producers ii. Consumers iii. Saprophytes iv. None of these
e. The type of nutrition in green plants is known as
i. Autotrophic nutrition ii. Holozoic nutrition iii. Heterotrophic nutrition Plant
iv. Homotrophic Nutrition
II Very Short answer Type questions
Give one word answer:
i. The gas used by plants for the synthesis of starch. _________
ii. ___________ in green plants is necessary for photosynthesis.
iii. Plants absorb Carbon Dioxide from the air through___________ in the leaves.
iv. The ultimate source of all the energy needs of our body .____________
v. Non green plants that live on dead and decayed plants and animals ._________
III Short Answer type questions
i. Mention the role of chlorophyll in photosynthesis.
ii. Name different types of teeth found in omnivores.
iii. Differentiate between inhalation and exhalation.
iv. Write special characteristics of herbivores and carnivores.
v. Define nutrition. Name two kinds of nutrition.
IV Long answer type questions:
i. Why cannot animals make food from carbon dioxide , water and sunlight like plants do?
ii. Why can’t our body use food in the form in which we eat it? Give reasons.
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