Evolution in Gas Exchanging System

Q. Match the following.

1. Lungs
2. Gills
3. Moist skin
4. Tracheae

Q. Which is the correct sequence of air passage during inhalation?

1. Nostrils -> Pharynx -> Larynx -> Alveoli
2. Trachea -> Nostrils -> Larynx -> Lungs
3. Nostril -> Pharynx -> Larynx -> Trachea -> Alveoli
4. Nostril -> Trachea -> Pharynx -> Larynx -> Alveoli

Q. The spiracles of insects open into tubes known as ____ .

1. tracheae
2. capillaries
3. veins
4. bronchi

Q. Frogs can breathe through their lungs as well as their _____ .

1. skin
2. spiracles
3. gills
4. tracheae

Q.

Amoeba does not require any respiratory pigment to transport oxygen. The possible reason could be ___

1. They do not need oxygen for respiration

2. They are too primitive to respire

3. Exchange of gases occurs by diffusion

4. They trap oxygen along with food

Q. In earthworms, moist surface is necessary for oxygen to be absorbed and carbon dioxide to be given off.

1. False
2. True