3rd Grade Unit 3 Test Prep

3rd Grade Unit 3 Test Prep

Ecosystems, Environmental changes, Food chains, Plant/Animal Structures & Functions and Life Cycles

Multiple Choice

The bromeliad flower provides shelter to the poison dart frog. The frogs lay their eggs, grow and live near the flower. The flowers grow and flourish in a very hot, humid and wet environment. Which environment would best support a flower needing those traits?

• Artic

• Desert

• Rain Forest

• Prairie

Multiple Choice

How does soil support the survival of a population of bluebonnet flowers?

• The soil provides heat that helps water evaporate

• The soil provides nutrients for the bluebonnets

• The soil provides oxygen for the bluebonnets

• The soil provides camouflage for the bluebonnets

Multiple Choice

Which is NOT an environmental change that will affect the survival of organisms?

• Flood

• Drought

• Plane Landing

• Volcanic eruption

Poll

In times of severe environmental change such as flooding and droughts, what advantage do animals have that plants do not?

• Animals do not have an advantage over plants.

• Animals reproduce and make more of their kind when the environment changes.

• Animals have structures that help them survive, plants do not.

• Animals have the ability to move out of a situation but plants are anchored.

Multiple Choice

In a forest ecosystem, the fox's habitat is a den. Foxes use the den for shelter and protection from predators. What other habitat would be similar to a den?

• Tree

• Pond

• Cave

• Bush

Poll

Students create graphic organizers from research about environments. Which characteristic do the two environments have in common?

• The climate of the two environments is similar

• The types of vegetation in the two environments is similar

• The type of graphic organizer is similar

• The levels of rainfall in the two environments is similar

Poll

Which ecosystem best support a community of coyotes, scorpions and jackrabbits?

• Forest

• Grasslands

• Freshwater Pond

• Desert

Multiple Choice

The picture shows a fresh-water pond community. Which populations are found in this pond community?

• Mud, rocks, logs and water

• Fish, frogs, cattails and crawfish

• Cacti, lizards, logs and owls

• Decaying leaves, predators, prey and scanvengers

Multiple Choice

A beaver family moves to a new area and builds a dam. The dam creates a pond where there was once a stream. What environmental changes are caused by a dam?

• All the plants and animals will survive, and new organisms will move to the area.

• All organisms will die and new ones will move to the area.

• Some organisms will die or move to new locations, and some new animals may move to the area.

• None of the above

Poll

What would happen to the flow of energy in the food chain presented if the bees were removed?

• The bird population would decrease

• The wildflower population would not be affected

• Coyotes would get more energy from wildflowers

• The wildflower population would decrease

Multiple Choice

The diagram shows a food chain. What do the arrows demonstrate in this diagram?

• Predators eating prey

• Flow of energy

• Habitat

• Organisms on the endangered species list

Multiple Choice

When a hawk eats a snake, the hawk--

• gives energy to the snake

• gets shelter from the snake

• gets energy from the snake

• communicates with the snake

Poll

The desert is a hot, harsh environment. Which structure helps a cactus protect itself from animals trying to consume it?

• Needlelike leaves

• Poisonous venom

• Bad odor

• Green color

Multiple Choice

Which of the following is an example of a physical structure?

• Butterfly migration

• Eagle flying high in the air

• Elephant Tusks

• Groundhog hibernation

Multiple Choice

The Malamute is a dog with a double coat of fur. The inner coat is oily, woolly and very thick. The outer coat is coarse. The fur of the malamute would function best in which type of environment?

• Tropical region

• Desert region

• Colorless region

• Cold region

Poll

A student makes a chart to explain the structures and functions of plant parts. Which of the following functions would best complete the chart?

• Carries water

• Absorbs nutrients

• Anchors plant

• Attracts bees

Multiple Choice

A caterpillar is shown in the picture. Before the insect became a caterpillar, it was---

• an adult

• a pupa

• a larva

• an egg

Multiple Choice

Which of these animals will look most like its parent when it hatches from its egg?

• Toad

• Lady Beetle

• Bird

• Butterfly

Multiple Choice

What is a life cycle?

• The stages of metamorphosis

• The stages in the life of an organism

• The passing of traits from parent to offspring

• The transfer of energy from plants to animals