Insect Size and Evolution Quiz

What is the primary material that makes up an insect's exoskeleton?

• Cellulose

• Collagen

• Keratin

• Chitin

Why would a giant insect need a thicker exoskeleton?

• To increase its speed

• To enhance its color

• To support its increased weight

• To improve its agility

How do insects grow their exoskeletons?

• By expanding their current exoskeleton

• By molting into a larger exoskeleton

• By adding layers to their exoskeleton

• By absorbing minerals from the soil

What was the oxygen level on Earth 300 million years ago?

• 25%

• 40%

• 21%

• 31-35%

How do insects primarily take in oxygen?

• Through gills

• Through spiracles

• Through their skin

• Through lungs

Why are insects more dependent on oxygen levels than mammals?

• Because they have a different breathing mechanism

• Because they have larger lungs

• Because they are cold-blooded

• Because they live in water

What is a significant factor that limits the size of insects today?

• Lack of food

• Climate change

• Predation by mammals

• Oxygen availability

What evolutionary development coincided with the decrease in giant insect size?

• The evolution of amphibians

• The evolution of mammals

• The evolution of birds

• The evolution of reptiles

What is one reason birds could outcompete giant insects?

• They had better camouflage

• They were more agile

• They were larger

• They were more colorful

What is a unique feature of insects despite their small size?

• They can lift objects many times their body weight

• They are all nocturnal

• They have simple social structures

• They are all herbivores