Question

5. Give four differences
6. Give a briet assount of the various modes of respiration found in animals.
7. Desctibe the movement of oxygen and carbon dioxide in human body. ​

Answer 1

Step-by-step explanation:

6) :-

In insects like cockroaches, grasshopper, transportation of gas or gaseous exchange take place by a special type of fine tubes is called tracheae. A majority of aquatic animals like fish and prawns breathe through special organs called gills. ... Gills contain blood vessels which help in exchange of gases

Answer 2

• Speed is a scalar quantity and velocity is a vector. Speed only determines the magnitude that is how fast is a body moving whereas velocity determines the direction also that is in which direction the body is moving. Speed is the rate of change of distance whereas velocity is the rate of change of displacement.
• In insects like cockroaches, grasshopper, transportation of gas or gaseous exchange take place by a special type of fine tubes is called tracheae. A majority of aquatic animals like fish and prawns breathe through special organs called gills. ... Gills contain blood vessels which help in exchange of gases.