Exploring the World of Birds

Which of the following is a characteristic feature of all birds?

• They have fur

• They have feathers

• They have scales

• They have gills

What is the primary function of a bird’s wings?

• Digging

• Flying

• Swimming

• Hearing

Which organ is mainly responsible for oxygen exchange in birds?

• Heart

• Lungs

• Stomach

• Liver

Which of the following is NOT a type of bird?

• Sparrow

• Eagle

• Salmon

• Penguin

Which system in birds is primarily responsible for transporting oxygen and nutrients throughout the body?

• Digestive system

• Circulatory system

• Nervous system

• Excretory system

Explain how the structure of a bird’s wing helps it to fly.

• The wing is flat and heavy, making it hard to move.

• The wing is curved on top and flat on the bottom, creating lift.

• The wing is covered in scales for protection.

• The wing is used only for balance.

Which feature of the bird respiratory system allows for efficient oxygen exchange during flight?

• Air sacs that allow continuous airflow

• Lungs that stop working during flight

• Gills that filter water

• Thick skin that absorbs oxygen

Why do birds have a four-chambered heart?

• To store food

• To separate oxygen-rich and oxygen-poor blood for efficient circulation

• To help them swim

• To digest food faster

A student observes that penguins cannot fly but sparrows can. Using your knowledge of bird characteristics, explain why this difference exists.

• Penguins have heavier bodies and wings adapted for swimming, not flying, while sparrows have lightweight bodies and wings adapted for flight.

• Penguins do not have wings.

• Sparrows live in water.

• Penguins have feathers, sparrows do not.

Tags

NGSS.MS-LS4-2

Given the main features of the bird respiratory and circulatory systems, predict how these adaptations help birds during long-distance migration.

• They slow down the bird’s metabolism.

• They allow for efficient oxygen delivery and energy use, supporting sustained flight.

• They make birds heavier.

• They reduce the bird’s need for food.