Science Model Activity Task Class 7 : February 2022 Solution

Model Activity Task Class 7 of Science subject has been released by the School Education Department of West Bengal . Here you will find the answers of the Model Activity Task Class 7 Science with full answers and proper explanation .

Model Activity Task Class 7

Model Activity Task are very important for the students of School of West Bengal . These Model Activity Task are useful to know how much knowledge a student has acquired . Here you will get Model Activity Task Class 7 Solutions of the February Month .

Model Activity Task ClassClass 7
Model Activity Task SubjectScience
Time PeriodFebruary 2022
Language English
Download Questions pdf (Answer is provided below this table )CLICK HERE
Model Activity Task Class 7 February Solutions for Science Subject

Model Activity Task Science Class 7 February 2022 Solutions

The below are the answers and explanation of each and every question of Model Activity Task Class 7 Science Subject for the Month of February 2022.

Model Activity Task
Class – VII
Environment and Science
Full Marks : 20

Q1. Choose the correct answer:
1.1 A food component from which energy is NOT obtained is —
(a) Carbohydrate
(b) Vitamin
(c) Lipid
(d) Protein.
Answer and Explanation : Option [b] “Vitamin B” is the Correct Answer

1.2 Goiter occurs due to the deficiency of —
(a) Sodium
(b) Iron
(c) Iodine
(d) Calcium
Answer and Explanation : Option [c] “Iodine” is the Correct Answer

1.3 An example of processed food is —
(a) Pineapple
(b) Pineapple jam
(c) Mango
(d) Cold drinks.
Answer and Explanation : Option [b] “Pineapple Jam” is the Correct Answer

Q2. Fill in the blanks:
2.1 _____________ occurs due to the deficiency of protein.
2.2
_____________ protein is present in hair and nails.
2.3 Iron helps in transport of _______________.


Answers And Explanation
2.1 Kwashiorkor occurs due to the deficiency of protein.
2.2 Keratin protein is present in hair and nails.
2.3 Iron helps in transport of Oxygen .

Q3. Answer in one or two sentence(s)
3.1 Name two foods that contain food fibre.

Answer And Explanation :
The two food which contains fibre are : —
i) Apples
ii) Popcorn

3.2 What symptoms are observed in Marasmus ?

Answer And Explanation :
There are many symptoms of Marasmus out which being underweight is common.
Other Symptoms of Marasmus are : Chronic Diarrhea , Respiratory infections , intellectual disability , stunted growth.

3.3 Mention two roles of lipid in human body.

Answer And Explanation :
The functions of lipid in human body are mentioned below :
i) Lipids function as energy reserve
ii) Lipids regulates hormones
iii) Lipids transmit nerve impulse
iv) Lipids transport fat soluble nutrients

3.4 Write two sources of Vitamin C.

Answer And Explanation :
The sources of Vitamin C are :
Potatoes
Strawberries
Broccoli
Citrus Fruit – Orange ,etc
peppers

Q4. Answer in three-four sentences: 2×3=6
4.1 Mention the role of phytochemicals in human body.

Answer And Explanation :
Phytochemicals does the following functions
i) stop carcinogens from attacking cells
ii) stop the formation of potential cancer-causing substances (carcinogens)
iii) stop and wipe out any cancer-like changes

4.2 Explain the role of water in organisms.

Answer And Explanation :
Water act as a solvent helps cells transport and use substances like oxygen or nutrients. Water-based solutions like blood help carry molecules to the necessary locations