I WONDER - Is Blood Always Red?

The video explores the diversity of blood colors in the animal kingdom. While human blood is red, other animals have blood in various colors such as blue, yellow, green, violet, and even colorless. The color of blood is determined by the type of respiratory pigment used to transport oxygen through the circulatory system.

Which of the following statements is true about animal blood colors?

• Only insects have colorless blood.

• All marine animals have blue blood.

• All animals have red blood.

• Some animals have blood that is not red.

Which animals are known to have green blood?

• Crab spiders and snails

• Earthworms and leeches

• Sea cucumbers and starfish

• Beetles and butterflies

What color is the blood of sea cucumbers and starfish?

• Blue

• Yellow

• Green

• Violet

Which of the following animals have blue blood?

• Peanut worms

• Earthworms and leeches

• Beetles and butterflies

• Octopi and snails

What determines the color of an animal's blood?

• The size of the animal

• The animal's habitat

• The type of respiratory pigment

• The animal's diet