G7-SCI-L6 Respiration in Organisms

What is the breathing rate?

• The number of times a person breathes in a minute
• The amount of air inhaled in one breath
• The process of inhaling and exhaling
• The capacity of the lungs

Why does an athlete breathe faster and deeper than usual after finishing a race?

• To cool down the body
• To remove excess carbon dioxide
• To increase the oxygen supply to the muscles
• To relax the muscles

What is the difference between aerobic and anaerobic respiration?

• Aerobic respiration requires oxygen, while anaerobic respiration does not
• Aerobic respiration produces more energy than anaerobic respiration
• Aerobic respiration occurs in plants, while anaerobic respiration occurs in animals
• Aerobic respiration is faster than anaerobic respiration

Why do we sneeze when we inhale a lot of dust-laden air?

• To remove foreign particles from the nasal cavity
• To cool down the respiratory system
• To increase the oxygen intake
• To expel excess carbon dioxide

Which organisms have lungs for respiration?

• Cockroaches, snails, fish
• Elephants, lions, cows
• Earthworms, ants, mosquitoes
• Whales, dolphins

How do fish breathe underwater?

• Through lungs
• Through gills
• Through spiracles
• Through skin

Do plants also respire?

• No, plants only undergo photosynthesis
• Yes, plants respire like other living organisms
• Plants respire during the day and photosynthesize at night
• Plants do not require oxygen for respiration

Where do roots of plants take in oxygen from?

• From the air spaces in the soil
• From the leaves through stomata
• From the water in the soil
• From the sunlight

What is the purpose of the tracheal system in insects?

• To exchange gases with the environment
• To cool down the body temperature
• To remove excess carbon dioxide
• To store oxygen for later use

Which gas is exhaled during respiration?

• Oxygen
• Carbon dioxide
• Nitrogen
• Hydrogen