excretion in plants and animals

Excretion, in unicellular plants and animals, takes place through _________.

• Diffusion

• Osmosis

• Active transport

Which organ system removes cellular wastes as the result of cellular respiration?

• nervous
• digestive
• excretory
• circulatory

what do the lungs do in the excretory system

• dispose of carbon dioxide through exhalation
• disposes of smog thru exhalation
• dispose of ultraviolet rays through exhalation
• dispose of rays through exhalation

What vascular tissue transports food within a plant?

• Phloem
• Xylem
• Stomata
• Cell wall

What vascular tissue transports water within a plant?

• Phloem
• Xylem
• Stomata
• Cell wall

Substances transported in plants are

• water

• minerals

• food

• all of the above

What is the main function of the excretory system?

• to collect and remove wastes from the body
• to strengthen skeletal muscles
• to protect the nervous system
• to bring oxygen to body cells

The lungs, kidney and skin are all part of the

• nervous system
• nephron
• kidney
• excretory system

Which of the following mainly excretes CO₂?

• skin
• kidney
• lungs
• urethra

Which of the following mainly excretes nitrogenous waste, water and salts?

• skin
• kidney
• lungs
• gall bladder