Life Science

Which of the following is a BENEFIT of microorganisms?

• They feed on living things.

• They do not multiply.

• They are used to make medicine.

• They remove minerals from the soil.

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Which animals are cold-blooded, live part of their lives in water and part on land, and go through metamorphosis?

• mammals

• birds

• amphibians

• reptiles

A biologist discovers a new multicellular organism. If she looks at the cells under a microscope, which structure would BEST indicate this organism is a plant?

• lysosome

• ribosome

• nucleus

• chloroplast

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Organisms with a body covering of feathers are classified as

• mammals

• insects

• birds

• fish

Which of these are characteristics of inherited traits?

• becoming an extrovert (someone who is outgoing)

• mastering multiplication tables

• having green eyes and brown hair

• the ability to speak in front of a crowd

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Pine trees and ferns are grouped together and dandelions and tulips are grouped together. Why?

• One group is seedless the other is not.

• One group is green the other is not.

• One group produces flowers the other does not.

• One group needs water, the other does not.

All vertebrate animals have?

• hair

• warm blood

• backbones

• scales

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Most dogs can learn to sit for a treat. Is this a learned behavior or an inherited trait?

• Learned behavior

• Inherited trait

One BENEFIT of bacteria is that they can be used to

• keep our clothes from wearing out

• used to make cheese and yogurt

• produce plastic from petroleum

• strengthen some wood products

Which type of magnifying instrument would you use to see the nucleus of a cell?

• microscope

• hand lens

• magnifying glass

• glass of water