Grade 7 Revision: Respiration in Organisms

Organisms respiring in the absence of oxygen are called ____________.

Anaerobic respiration.....

• doesn't require CO2
• requires CO2
• doesn't require oxygen
• requires oxygen

Tags

NGSS.HS-LS2-3

When you breathe, your lungs take in ___ and remove ___.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/waste

• waste/air

The air sacs that are covered with capillaries where gas exchange takes place are called as _________

• bronchi
• lungs
• oxygen
• alveoli

Name the organ label # 6.

• alveoli

• bronchi

• trachea

• lungs

What is the organ "x"?

• Heart

• Lungs

• Diaphragm

• Trachea

State True or False
Gills take in oxygen from the water while lungs take in oxygen from the air.

• True
• False

Which of the following option presents the passage of air from outside to lungs?

• nostril, trachea, nasal cavity, lungs, bronchi

• nasal cavity, trachea, lungs, nostril, bronchi

• lungs, bronchi, nasal cavity, trachea, nostril

• Nostril, nasal cavity, trachea, bronchi, lungs

Which equation shows the reaction for anaerobic respiration?

• carbon dioxide + water --> glucose and oxygen

• glucose + Oxygen --> lactic acid and energy

• glucose + oxygen --> carbon dioxide and water and energy

• glucose --> lactic acid and energy

Which of the following statements is false?

• Earthworms breathe through their moist skin

• Cockroach takes in air through tiny air tubes called stomata

• Fish take in oxygen dissolved in water through their gills

• The exchange of gases in plants takes place by diffusion.