Science - Unit N Day 6

Science - Unit N Day 6

TODAY’S TARGET: Compare and contrast the function of organs and other physical structures of plants and animals, including humans, for example: some animals have skeletons for support—some with internal skeletons, others with exoskeletons—while some plants have stems for support.

Multiple Choice

A snake and a worm have a similar long, narrow body with no arms or legs. The biggest difference between a snake and a worm is the presence of which of the following structures in a snake:

• outer covering

• backbone

• internal organs

• gills

​What Organs Do Animals Use to Breathe?

​I. Lungs, gills, and skin are 3 ways that animals breathe.

• Mammals, birds, and reptiles use lungs to breath air.

  • marine mammals like dolphins and manatees use lungs.

  • Birds use lungs to breath air.

  • Alligators and turtles can hold their breath while they are underwater, but they need to come to the surface to breath air.

Multiple Choice

Mammals, birds, and reptiles use ____________ to breathe air.

• gills

• lungs

• carbon dioxide

• oxygen

Multiple Choice

Fish use ________ to breathe air.

• lungs

• gills

• carbon dioxide

• oxygen

​BREATHING....

​II. Fish use gills to breath.

• The function of lungs and gills is to exchange gases.

  • When water passes over a fish’s gills, oxygen is absorbed from the water.

  • Carbon dioxide is released by the gills into to the water.

Multiple Choice

When water passes over a fish’s gills, ________ is absorbed from the water.

• air

• water

• oxygen

• carbon dioxide

​III. Amphibians use a combination of lungs and their skin to breathe.

• Amphibians are able to exchange gases directly through their skin.

  • During different stages in their life cycles, some amphibians use gills as tadpoles.

    • The gills will be replaced with lungs when the tadpole grows into an adult.

​BREATHING....

Multiple Choice

Amphibians use a combination of lungs and their _______ to breathe.

• faces

• mouths

• skin

• gills

​IV. Arthropods use many different ways to breathe

• Gills and Lungs

​BREATHING...

Multiple Choice

Mammals, birds, and reptiles all use lungs to breathe. Fish and some amphibians use gills to breathe. Which of the following characteristics is the biggest difference between mammals and other classifications of animals, including birds, reptiles, fish, and amphibians?

• live birth

• skeletons

• scales

• lungs