INDIAN SCHOOL MUSCAT
DEPARTMENT OF SCIENCE
SUBJECT: SCIENCE
Task sheet No:
TOPIC : RESPIRATION IN ORGANISMS
STD: 7
Coordinating Staff: Jayshree P.
Date of Issue: 10/06/15
Name of the student: __________________________
Class ___ Sec: _____
Roll No: ____
FILL IN THE BLANKS
1. The dome- shaped muscle present beneath the lungs is called __________
2. ________________ is a process of releasing energy from the breakdown
of food.
3. Plants respire through ____________________ present on the underside
of leaves.
4. Aquatic plants and animals survive in water by utilizing dissolved
___________________.
5. Respiration in presence of oxygen is called ________________________.
NAME THE FOLLOWING
1.
2.
3.
4.
The site of anaerobic respiration in humans
__________________
Another name for the chest
__________________
The gas which turns limewater milky
__________________
The compound formed when oxygen combines with haemoglobin in the
blood
___________________
5. The form in which energy is stored inside the body ___________________
STATE WHETHER TRUE OR FALSE
1.
2.
3.
4.
5.
Yeast, bacteria and fungi respire anaerobically.
Leeches respire through moist skin.
Enzymes and catalyst are not involved in respiration.
Respiration takes place inside the cells.
Anaerobic respiration result in the formation of ethyl alcohol.
ANSWER THE QUESTIONS
1. Complete the equations.
a. Sugar + oxygen
b. Sugar
 ___________+_____________+___________
 ______________+________________+____________
2. Draw the respiratory system of human beings and label the following
parts.
a. trachea b. lungs c. bronchus d. bronchioles e. diaphragm