Q1) What is an organ system? Give Examples.
Q2) Match the following
| a) Digestive System | 1) Bones | |||
| b) Circulatory System | 2) Kidneys | |||
| c) Skeleton System | 3) Stomach | |||
| d) Respiratory System | 4) Brain | |||
| e) Nervous System | 5) lungs | |||
| f) Excretory System | 6) Heart |
Q3) Define Following terms
a) Nutrients
b) Digestion
c) Digestive juices
Q4) Complete the Working of Digestive System.
a) In _______ food is broken by teeth and is mixed with digestive juice called saliva.
b) ________ helps to move food from mouth to the stomach where food mixes with digestive juices.
c) In ____________ food enters from stomach and here nutrients are absorbed from the food .
d) In ______the undigested food enters from small intestine and here water is absorbed from it.
e) ______stores undigested food
f) ______removes undigested food from the body.
Q5) Based on the working of Circulatory System answer the following questions.
a) Main organs of circulatory system
b) ________ is the medium that carries nutrients and oxygen throughout the body.
c) Identify who am I?
1) I carry blood throughout the body
2) I carry carbon-di-oxide rich blood back to heart
3) I carry oxygen rich blood to different parts of the body.
4) I contract and relax to push blood through blood vessels.
Q6) Differentiate between arteries and veins.
Q7) The respiratory system inhales ( takes in ) _______ and exhales ( gives out) _______.
Q8) Based on working of Respiratory system, Identify who am I.
a)We breathe in through this organ.
b) mascular bag which takes in oxygen from inhaled air and removes carbon-di-oxide
c) acts as path to carry air from nose to lungs and back.
Q9) Why do we have tiny hair inside our nose?
Q10) Short Note on Excretory System.