G10-Bio-10

What is the function of stomata in plants?

• a. To absorb sunlight for photosynthesis
• b. To exchange gases with the environment
• c. To transport water and nutrients

In which part of the plant body does gaseous exchange occur?

• a. Roots
• b. Stem
• c. Leaves

What is the name of the pores present in the layer of bark in woody stems?

• a. Stomata
• b. Lenticels
• c. Tracheids

How do aquatic plants obtain oxygen for gaseous exchange?

• a. From the soil surrounding their roots
• b. By absorbing oxygen from the air
• c. By absorbing oxygen dissolved in water

What is the name of the opening through which air comes into the lungs?

• a. Alveoli
• b. Bronchioles
• c. Nostrils

Which part of the respiratory system moistens and warms incoming air?

• a. Bronchioles
• b. Trachea
• c. Nasal cavity

What is the function of the pharynx in the respiratory system?

• a. To transport air to the lungs
• b. To filter dust particles from the air
• c. To provide a passage for both food and air

What is the name of the muscle that contracts and relaxes to change the size of the chest cavity during breathing?

• a. Diaphragm
• b. Trachea
• c. Bronchioles

Which gas is released during expiration in humans?

• a. Oxygen
• b. Nitrogen
• c. Carbon dioxide

Which part of the brain controls breathing?

• a. Cerebellum
• b. Cerebrum
• c. Medulla oblongata