L.14.2 Functional Structures of Organisms

Gills in fish and lungs in birds are comparable organs because they both help the organism in which of the following ways?

• Get the nutrients they need from food

• Exchange gases with the atmosphere

• Care for their offspring when they are born

• Provide places for muscles to attach

How are the wings of birds different from the wings of bats?

• Bird wings do not move up and down.

• Bird wings are covered with feathers.

• Bird wings do not contain any bones.

• Bird wings only move very slowly.

The skeleton of an animal provides support. What plant part serves a similar function?

• Roots

• Flower

• Leaves

• Stem

Structures are body parts that carry out specific functions. Plant leaves and animal mouths are comparable organs because they both help the organism in which of the following ways?

• Protect organism from disease

• Provide support and movement

• Provide protection from the environment

• Obtain nutrients needed for survival

Logan is examining a leaf under a microscope. He notices tiny holes on the bottom of the leaf. He learns that these holes allow the plant to exchange gases with the air around them. Logan wants to identify a similar structure that animals have. Which of the following would be the best choice for an animal body structure that performs the same function as the tiny holes on a plant’s leaves?

• Eyes

• Nose

• Ears

• Tongue

Scales and fur on animals are examples of features that do which of the following?

• Allow the animal to take in water

• Help the animal move quickly

• Provide the animal with nourishment

• Provide protection from the environment

Which of the following pairs list body parts of animals that perform the same function?

• Paws and tails

• Wings and fins

• Whiskers and horns

• Feathers and claws

Samantha is observing her dog as it drinks water. She observes that the dog uses its tongue to get the water it needs. She knows that plants need water just like animals. What plant part serves a similar function?

• Flowers

• Roots

• Stem

• Leaves

Every animal is composed of a collection of organs, allowing the animal to live. Animals have internal or external skeletons that allow which of the following functions for the animal?

• Exchange gases

• Protect from disease

• Take in nutrients

• Allow movement

Every plant has parts and organs that help it function. Which of the following pairs list parts of plants that allow them to disperse their seeds?

• Leaves and woody stems

• Fruit and pine cones

• Bark and sharp thorns

• Stems and fragrant flowers