Grade 5 Ch. 5

What root system would a plant in the desesrt most likely have?

• a large root system, deep beneath the surface

• a large root system, close to the surface

• a small taproot with long root hairs

• a small taproot with short root hairs

When different plants that live in the same area are competing for water, which kind of plant will have the greatest chance of surviving?

• the plant with the largest leaves

• a plant with needles instead of leaves

• the plant with the largest root system

• a plant with a compact root system

Birds depend on insects to survive in an ecosystem. If a person spreads pesticide to control the insect population, what is most likely to happen?

• The bird population will increase.

• The bird population will decrease.

• The bird population will decrease, then increase.

• The bird population will increase, then decrease.

This biome has the most species living in it.

• deciduous forest

• grassland

• taiga

• tropical rainforest

Maple and spruce trees grow well in a temperate rainforest because_________________________________.

• The trees grow well in the dry, hot climate.

• The trees grow well in the wet, hot climate.

• The trees grow well in the dry, cool climate.

• The trees grow well in the wet, cool climate.

An example of a symbiotic relationship is a plant-like algae growing inside corals. How would an algae benefit the corals?

• The algae allow the corals to live i deep ocean environments.

• The algae provide the corals with various nutrients.

• The algae help the corals make a hard outside coating.

In which of the following examples do both organisms need each other to survive?

• a parasitic worm living in a fox's bloodstream

• a microorganism living in the stomach of a wolf

• a fungus and bacteria forming a lichen

• a squirrel scaring insects off a tree into the path of birds

The source of much of the oxygen in the atmosphere comes from _________________________?

• plankton in the ocean

• plants

• trucks and cars

• volcanoes

This adaptation helps the elk survive best in the taiga.

• large antlers

• change of colors

• thick fur

• winter hibernation

Carnivores obtain energy by _______________________.

• eating plants

• eating animals

• eating animals and plants

• eating the food they make