3rd grade science

A frog develops front and back legs during

• adaptation

• behavior

• metamorphosis

A bird building a nest is an example of a

• germinate

• behavior

• life cycle

Before a new plant can grow, the seed must

• behavior

• germinate

• life cycle

Snakes lay eggs as part of their

• life cycle

• metamorphosis

• adaptation

The quill of a porcupine is a structural

• germinate

• life cycle

• adaptation

Some animal behaviors are learned in response to living in a certain environment. Some come from instinct. Which of the following behaviors is based on INSTICT?

• a chimpanzee using a tool to dig up insects

• bats hibernating in the winter months

• lion cubs imitating the hunting behaviors of their mother

• a dog responding to its owner's commands

Oscar enjoys bird watching. His favorite bird is a warbler, but he can see them only until September. Then the warblers head south in search of food. What is the warbler's behavior an example of?

• camouflage

• migration

• hibernation

• mimicry

Animals have body structures that help them find food and shelter or defend themselves from predators. What adaptation helps the cheetah compete with other animals for food?

• climbing ability

• a long life cycle

• fur to maintain body heat

• strong legs for high-speed hunting

Tasha is making a chart about the life cycle of a pine tree. Place the stages of tree's life cycle below in the correct sequence.

1. 1. a seed forms inside a cone
2. 2. a plant grows into an adult pine tree
3. 3. a cone is pollinated
4. 4. a seed germinates and a new plant sprouts

• 1,2,3,4

• 3,1,4,2

• 2,1,4,3

• 4,3,2,1

Sara is studying how animals undergo a series of orderly changes in their different life cycles. She sees a cricket. How does the life cycle of this insect differ from that of a frog?

• it undergoes hibernation in the winter

• it undergoes migration in the summer

• it does not have legs when it hatches

• it breathes air when it hatches