Science Life Science 4th Grade

How are sunlight and plant reproduction linked?

• Plants use sunlight for plant pollination.

• Plants turn sunlight into energy for reproduction.

• Plants depend on sunlight to attract bees for reproduction.

• Plants need sunlight to release their scent and attract pollinators.

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Where do all life forms get their energy?

• Earth's Core
• Water
• Plants
• The Sun

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Recently, a family of bobcats moved into an area with a large rabbit population. What changes may occur in the ecosystem?

• The rabbit population may increase
• The rabbit population may decrease
• The rabbit population may increase first, then decrease
• The rabbit population will remain the same

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Review the food chaine below:

berry--->mouse--->snake

A mouse is storing the energy from a berry. When a snake eats the mouse, what happens to the energy from the berry?

• The energy returns to the berry.

• The energy will be completely lost.

• The energy will be absorbed by the snake.

• The energy will be transferred to another mouse.

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What is the best explanation for a decrease in a population of birds in a community?

• The amount of food decreases.

• The amount of space increases.

• The amount of water increases.

• The amount of air stays the same.

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Which of the following living things cannot make its own food?

• moss

• daisy

• oak tree

• cricket

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A producer?

• Eats other plants and animals
• Makes its own food
• Eats dead plants or animals
• Makes toys for kids

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A consumer?

• Makes its own food
• Eats dead plants and animals
• Eats plants and other animals for energy
• Buys toys for kids

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Which of the following food chains BEST describes the flow of energy in a living system?

• corn-->human-->chicken

• corn-->chicken-->human

• chicken-->human-->corn

• human-->corn-->chicken

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Florida is a southern state; Montana is a northern state. The grass on mot lawns in Florida will stay green all year, but the grass in Montana will turn brown in the fall and green in the spring.

What is the most likely reason?

• more rain keeps the grass in Florida green.

• less direct sunlight in Florida keeps the grass green.

• higher amounts of nutrients keep the grass in Florida green.

• more direct sunlight in Florida keeps the grass in Florida green.

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