EASY
Earn 100

What are the different parts of the alimentary canal?

Important Questions on Nutrition

HARD

Draw the diagram of open and closed stomata and label:

a) chloroplast
b) guard cells

HARD
Sphincter that helps in opening stomach into duodenum is _____
MEDIUM
What is the source of oxygen produced during photosynthesis?
MEDIUM

Answer the following:

A rabbit has a longer small intestine than a tiger. Give scientific reason.

MEDIUM
List four precautions which a student should observe while preparing a temporary mount of a leaf peel to show stomata in his school laboratory.
HARD

Hari had a problem with carbohydrate, protein and fat metabolism in his body:

a) Name the element he must include in his diet to overcome this problem.

b) Give one symptom of the deficiency disease caused in the above.

MEDIUM

Answer the following:

Write a point of difference between parasites and saprophytes.

MEDIUM
What are the adaptations of leaves for photosynthesis?
MEDIUM
List in tabular form three distinguishing features between autotrophic nutrition and heterotrophic nutrition.
MEDIUM
Attempt the following:
Food is broken down in the alimentary canal into smaller molecules:
(a) What is the importance of HCl in the stomach of man?
(b) What is the role of Bile Salts in the Emulsification of Fats?
EASY
The autotrophs capture the energy present in sunlight and convert it into _____ energy.
EASY
In which form are carbohydrates stored in plants?
MEDIUM
Draw a well-labelled diagram of the human digestive system.
EASY

Name the following:

The first enzyme to mix with food in the digestive tract

MEDIUM
List the steps of preparation of temporary mount of a leaf peel to observe stomata.
HARD

Match the following:

List A List B
(i) Pepsin a. Carbohydrates
(ii) Amylase b. Proteins
(iii) Lipase c. Fats