West Bengal Board Solutions for Chapter: Human Food, Exercise 40: Exercise 40
Author:West Bengal Board
West Bengal Board Science Solutions for Exercise - West Bengal Board Solutions for Chapter: Human Food, Exercise 40: Exercise 40
Attempt the practice questions on Chapter 5: Human Food, Exercise 40: Exercise 40 with hints and solutions to strengthen your understanding. Environment and Science Class 7 solutions are prepared by Experienced Embibe Experts.
Questions from West Bengal Board Solutions for Chapter: Human Food, Exercise 40: Exercise 40 with Hints & Solutions
EASY
7th West Bengal Board
IMPORTANT
Write down where is water stored in your body.
- Blood
- _____
- _____
- _____
- _____
- _____

EASY
7th West Bengal Board
IMPORTANT
How does our body lose water? Write your answers in the space provided below.
- Sweat
- _____
- _____
- _____

EASY
7th West Bengal Board
IMPORTANT
Different organs of the human body and body fluids contain a sizeable amount of water.
Name of organ/body fluid | Water content (%) by mass |
Lungs | 83 |
Brain | 73 |
Liver | 85 |
Bones | 31 |
Muscle | 75 |
Skin | 64 |
Heart | 73 |
Kidney | 83 |
Blood | 90 |
Saliva | 95 |
Now arrange the organs/body fluids of the human body from the list according to their decreasing water content.
