5th Grade Life Science Test

Some facts about rattlesnakes are listed below:

1) They have a rattle on their tail to warn other animals.

2) They feed on rodents, squirrels, rabbits, and small animals.

3) They hibernate in the winter and come out in the spring.

4) Most of the time there are 8-10 babies born at once.

WHICH OF THESE FACTS BEST DESCRIBES HOW RATTLESNAKES DEPEND ON OTHER ANIMALS TO SURVIVE?

• Fact 1

• Fact 2

• Fact 3

• Fact 4

A girl noticed that the leaves on her rose bushes were getting eaten by insects. She wanted to use insect spray to kill the insects. Her friend told her that the insect spray might kill other insects that are important for the other flowering plants in her garden.

WHY ARE SOME INSECTS IMPORTANT FOR FLOWERING PLANTS?

• Insects are the main energy source for plants.

• Some insects are needed to pollinate plants.

• Insects eat the leaves so more leaves will grow.

• Insects are not beneficial to plants in any way.

A student observes the following activities while at Nature Trails.

· A turtle catching a fish.

· An armadillo digging a burrow in the sand.

· Two squirrels chasing each other through the trees.

· Dragonflies catching mosquitos at the pond.

WHICH OF THESE LIVING ORGANISMS WAS INTERACTING WITH A NONLIVING PART OF THE ENVIRONMENT?

• dragonflies

• turtle

• squirrels

• armadillo

Four organisms obtain energy by these methods:

Bear: Eats grasses, roots, berries, insects, & fish

Deer: Eats plants, acorns, fruits, and nuts

Maple Tree: Produces food through photosynthesis

Mushrooms: Absorbs nutrients from decomposing plants and animals

WHICH ORGANISM OBTAINS ENERGY WITHOUT DEPENDING ON ANOTHER ORGANISM?

• Bear

• Deer

• Maple Tree

• Mushrooms

Below are some common animals found in a coral reef ecosystem and their diet:

1) Black-Tipped Reef Shark eat mullet, groupers, squid, octopus

2) Clownfish eat zooplankton

3) Moray Eels eat small fish, octopus, squid

4) Sea Stars eat sponges, snails, clams

WHICH TWO TYPES OF ANIMALS COMPETE FOR FOOD?

• Clownfish and Moray Eels

• Sea Stars and Clownfish

• Black-Tipped Reef Shark and Sea Star

• Black-Tipped Reef Shark and Moray Eels

In any food chain, energy CANNOT flow directly from –

• producer to consumer

• consumer to producer

• consumer to decomposer

• producer to decomposer

Above is a partial food web showing organisms found in a pond ecosystem.

IF ALL THE GRASSHOPPERS WERE REMOVED FROM THE AREA, THERE WOULD BE MORE FOOD FOR THE -

• caterpillars

• spiders

• grass

• toads

The partial food web above can be found in a meadow.

HOW MANY PRODUCERS AND DECOMPOSERS ARE SHOWN IN THIS WEB?

• 1 producer and 3 decomposers

• 2 producers and 3 decomposers

• 2 producers and 0 decomposers

• 1 producer and 0 decomposers

A wetland was drained to build a mall. Two years later, there are no more toads in the area.

WHAT IS THE MOST LIKELY REASON FOR THE TOADS' DISAPPEARANCE?

• The toads died because toads cannot breathe out of water.

• The toads were destroyed by the construction equipment.

• The toad population declined because they got their food from the wetland ecosystem.

• The toads were frightened and went into the woods.

Scientists claim that millions of years ago the area around Austin, Texas was covered by a shallow sea.

WHICH STATEMENT BELOW IS THE BEST EVIDENCE TO PROVE THIS CLAIM?

• There are several rivers and lakes in Austin.

• Many fossils of marine animals have been found in the Austin area.

• It can be very hot and dry in Austin in the summer.

• There are many hills in the Austin area.