Structures of Life

How do crayfish grab food and dig?

• with their tails

• with their teeth

• with their pincers

Crayfish can _______ body parts like legs and claws if one is lost.

• regenerate

• borrow

• find

What are two ways that could help you decide whether a crayfish is male or female?

• egg pore and longer swimmerets

• short swimmerets

• its smaller than another crayfish

What stage of the life cycle of a plant is shown?

• The seed is starting to sprout roots.

• The seed is starting to germinate and sprout leaves and roots.

• The seed is starting to germinate and grow worms.

• The seed is starting with hydroponics and sprouting roots.

Tags

NGSS.3-LS1-1

• A

• B

• C

• D

The exoskeleton of an arthropod is made of which of the following?

• chitin

• dentin

• protin

• chlorotin

Animals have different ​ (a)   that allow them to get ​ (b)   from their environment.

• structures

• information

• model

• process

What is the function of a hard shell of a turtle?

• camouflage

• protection from predators - too easy to penetrate

• protection from predators- too hard to penetrate

• feel its way around

• A

• B

• C

• D

These give the ability to breathe underwater to creatures that live in the water.

• Camouflage

• Teeth

• Gills

• Horns