SCIENCE: CHAPTER#3 LESSONS 1 AND 2

_________ holes on the surfaace of a plant through which gases pass.

• exoskeleton

• spiracles

• stomata

• skin

___________ a hard skeleton on the outside of the body.

• exoskeleton

• endoskeleton

• skin

• stem

_________ air holes on the skin of an insects body.

• bones

• skeleton

• spiracles

• stomata

An exoskeleton only purpose is to support the body

• TRUE

• FALSE

Plants can have a circulatory system.

• TRUE

• FALSE

A characteristic that allows an organism to survive better in its environment is a(n)_______________________________.

• adaptation

• behavior

• mutation

A random change in a gene is called a(n)_________________________________.

• combination

• mutation

• succession

• adaptation

_______________________________. is the predictable order of changes in communities after a change occurs.

• mutation

• adaptation

• succession

• exoskeleton

Which is NOT an adaptation that might help a plant survive in a very windy environment?

• bendable stems

• strong roots

• small leaves

• fragrant flower

_____ is the predictable order of changes in a community after a change occurs.

• Succession

• Adaptation

• Natural selection

• Mutation