WJEC AS Biology Unit 2: Animal Transport

What sort of circulatory system do insects have?

• Open circulatory system
• Closed circulatory system

What sort of circulatory system do earthworms have?

• Open circulatory system
• Closed circulatory system

What sort of closed circulatory system is this?

• Double circulatory system
• Single circulatory system

What sort of closed circulatory system is this?

• Double circulatory system
• Single circulatory system

What structural protein is found in the tunica external?

• Collagen
• Keratin
• Gelatin
• Amyloid

Which type of blood vessel contains valves?

• Capillary
• Artery
• Vein

Which valve prevents blood flowing backwards into the left atrium?

• Tricuspid valve
• Bicuspid valve
• Semi lunar valve

Which valve prevents blood flowing backwards into the right atrium?

• Tricuspid valve
• Bicuspid valve
• Semi lunar valve

Which valve prevents blood flowing backwards into the left ventricle?

• Tricuspid valve
• Bicuspid valve
• Semi lunar valve

Which valve prevents blood flowing backwards into the right ventricle?

• Tricuspid valve
• Bicuspid valve
• Semi lunar valve