Science Quiz

Which of these explains why the crab's outer shell helps it survive in its habitat?

• The shell keeps the crab warm.

• The shell helps the crab catch food.

• The shell protects the crab from predators.

• The shell allows the crab to get oxygen.

Sea otters live in large kelp beds in the open ocean. Otters have very streamlined bodies. What does a streamlined body help an otter do?

• sleep in the kelp bed

• swim easily to catch prey

• keep water out of its nose

• keep its fur dry when it swims

All living organisms contain structures that allow them to do which of the following?

• consume other organisms

• change light energy to food energy

• reproduce offspring

• camouflage themselves

Which of the following best describes the function of all the body coverings?

• They are sensory organs.

• They deliver oxygen through the body.

• They protect the animals.

• They eliminate bodily wastes.

Which of the following is NOT a characteristic of amphibians at any stage in their life cycle?

• segmented bodies

• smooth moist skin

• lay eggs in water

• breathe with gills

How is the skeletal system similar to the stem of a plant?

• Skeletons absorb energy from the sun.

• Both skeletons and stems transport nutrients throughout the body.

• Both the stem and the skeleton help the plant to make food.

• Skeletons support the body, and the stem supports the plant.

Which organism will probably be harmed the most by the decrease in the pond's size?

• fish

• trees

• insects

• grass

Which two characteristics do most mammals share?

• They are cold-blooded, and mothers make milk for their young.

• They are warm-blooded, and mothers make milk for their young.

• They are warm-blooded and have feathers or scales covering their bodies.

• They are cold-blooded and have hair or fur covering their bodies.

Which of the following correctly orders the three stages in an incomplete life cycle?

• egg, nymph, adult

• nymph, egg, adult

• adult, nymph, egg

• egg, adult, nymph

Which group of invertebrates possess an exoskeleton, has a body divided into segments, and has jointed legs or limbs?

• amphibians

• arthropods