Edexcel iGCSE Biology - Excretion

The lungs, kidney and skin are all part of the

• nervous system

• nephron

• kidney

• excretory system

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

Which of the following is not a waste product of excretion

• Carbon Dioxide

• Oxygen

• Sweating

• Urea

Which of the following is not an organ involved in the excretory process

• The Skin

• The Kidney

• The Pancreas

• The Lungs

Where does the waste from the kidneys go to be excreted from the body?

• lungs

• cortex

• medulla

• bladder

Sweat is a form of excretion. What substances are excreted via sweat?

• urea

• salts

• water

• all of the above

What is the role of the skin in the excretory system?

• To absorb nutrients

• To excrete sweat

• To produce hormones

• To filter blood

Which organs help to remove waste from the body?

• Lungs, stomach, bladder, and kidneys

• Lungs, heart, bones, and bladder

• Lungs, large intestine, bladder and kidneys

• Lungs, esophagus, bladder and kidneys

What are the main functions of the excretory system?

• deliver oxygen to the body

• deliver nutrients to the body

• remove water and waste from the body

• remove disease from the body