MEDIUM
7th Foundation
IMPORTANT
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Refer to the given figure of the human digestive system. What is X here and what is its function?

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Important Questions on Nutrition in Plants and Animals

MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 9

The given figures show different types of teeth. Which of these is used for biting and cutting food?

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MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 10
Read the given statements.
(i) Paramecium has stiff hair-like structures called___all over its body, which are used for___.
(ii) Hydra has a number of ___around its mouth, that entangle small aquatic animals and kill them with their ___ cells.
(iii) Frog uses its long, sticky___to catch insects.
(iv) Mosquito sucks up the blood of animals with its___.
Select the option which correctly fills the blanks in any two of these statements.
MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 11

The given figure shows the human digestive system. In which labelled part digestion of fat is completed?

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MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 12
In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable?
MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 13
Most crops require a lot of nitrogen to synthesise the proteins. The bacterium Rhizobium helps some of the crops to get nitrogen. Which of the following statements is incorrect for Rhizobium?
MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 14
Which enzymes are likely to act on the baked potatoes eaten by a man, starting from the mouth as they move down the alimentary canal?
MEDIUM
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 15
The steps of the digestive process are listed below in a random order.
(i) Water and some salts from undigested food are absorbed.
(ii) Food is liquefied; breakdown of proteins begins.
(iii) Food is moistened; breakdown of starch begins.
(iv) Proteins, carbohydrates, and fats break down; nutrients are majorly absorbed into the bloodstream.
Select the option that gives the correct order of these events as food passes through the human digestive tract.
HARD
7th Foundation
IMPORTANT
NSO Science Olympiad Workbook Grade 7>Chapter 1 - Nutrition in Plants and Animals>EXERCISES>Q 16

Refer to the given diagram showing a part of the human alimentary canal and answer the following questions. Which of the labelled structures removes most water from the undigested food?

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