Organisms: Structure and Function

How do humans receive visual information about their surroundings?

• Through sound waves

• Through light reflecting off objects and entering the eye

• Through smell receptors

• Through touch sensors

What external structure helps protect plant leaves from being eaten?

• Thorns

• Flowers

• Stems

• Roots

Which animal structure is responsible for processing information from the senses?

• Heart

• Brain

• Stomach

• Lungs

What must happen for an object to be seen by our eyes?

• The object must be very large

• Light must reflect off the object and enter our eyes

• The object must make its own light

• The object must be close to our eyes

Which internal structure helps plants transport water from their roots to their leaves?

• Flower petals

• Bark

• Xylem

• Thorns

What external structure helps protect a turtle from predators?

• Shell

• Whiskers

• Wings

• Fins

What external structure do many plants use to attract pollinators?

• Roots

• Stems

• Flowers

• Bark

Which internal structure helps animals digest their food?

• Lungs

• Heart

• Stomach

• Brain

How do animals typically respond to danger in their environment?

• They sleep

• They fight or run away

• They eat more food

• They make friends

Which statement best describes how we see a book on a table?

• The book sends signals to our eyes

• Our eyes send light to the book

• Light from the book travels directly to our eyes

• Light reflects off the book and enters our eyes