HMH Unit 3.2 Day One

HMH Unit 3.2

Pgs 178-181

​By the End of the Lesson...

• ​This monarch butterfly changes throughout its lifetime. What does it need form its environment to change and develop?

• ​By the end of the lesson, you will be able to explain how organisms use matter and energy obtained form their environments.

​Can You Explain It?

• ​A frog starts out as an egg. It then hatches into a legless larva that lives in water. It swims with a tail and breathes with gills. AS it grows, legs develop. The tail is absorbed by its body, and it gradually loses its gills. Eventually, the frog is able to live and breathe on land.

Open Ended

What is this frog made of?  How do you think it gets the raw materials that make its body and fuel its activities?  Answer in complete sentences.

​Body Building

• ​A baby horse, or foal, is small and not yet very strong. If the foal gets what it needs, it will grow and develop into a large, muscular, adult horse with a strong body.

Multiple Select

What do you think a foal needs to grow into an adult horse? Choose all that apply

• air

• water

• barn

• nutrients

• grooming

​Body Building

• ​Growth and repair of body parts requires matter, which for animals are raw materials. When food is eaten, matter is broken down into simpler forms. These can be used to build or repair an animal’s body. 

​

• ​Growth, repair, and other life processes also require energy. When food matter is broken down, energy is released. The animal’s body can then use the energy.

​Question Time!

​Animals require matter, such as oxygen, food, and water, to survive. Why do they need matter? What do you think might happen if an animal cannot access one of them?

​Taking It All In

​Although animals come in different shapes and sizes, they all need matter and energy for growth and repair. Look at the following slides of different animals getting wha they need from their environments. Choose the correct answer.

Multiple Choice

All animals need to exchange gases with their surroundings.  Different animals have different structures for gas exchange.  A mammal, such as this polar bear, has lungs for taking in oxygen from the ______ and breathing out carbon dioxide as waste.  An animal's circulatory system carries oxygen throughout its body.

• air

• water

• food

Multiple Choice

Birds, like all animals, have ways of getting ______ from the environment. Without water, animals cannot survive. In fact, most animal bodies have a great deal of water in them. Once used, the water an organism consumes is related back into the environment as waste.

• air

• water

• food

Multiple Choice

As this lizard feeds on plants, its body breaks down the plant matter. The matter is digested into raw materials that are used to build structures and repair damaged body parts.  The breakdown of ______ also releases energy that can be used for life processes, such as motion to find more things to eat.

• air

• water

• food

​FINAL QUESTION!

​What are the three things that animals need to survive?