DCA #1, 7th Grade Science

A behavior or characteristic that helps an animal survive in its environment is...

• defensive instincts

• A genetic trait

• An adaptation

• hunting

Some plants depend on seasonal (weather) changes to signal their responses. For example, some plants respond to more or less daylight. A deciduous tree would become

• hard to see.

• more lively.

• less likely to pollinate.

• dormant as winter time approaches.

Angiosperms produce brightly colored blooms and sweet-smelling flowers. They have developed these adaptations to attract pollinators and help ensure

• pollination

• fertilization

• growth

• seed spreading

Most animals grow and change throughout their life. They can be born live or hatched from an egg. This is called...

• the life cycle

• the circle of life

• Fertilization

• Pollination

Species one is a male bird with bright feathers. Species two is a male bird with dull feathers. The statement that best describes this graph is

• there was a lot of macaroni available on the island

• spoon birds survive better

• that the colorful feathers resulted in species 1 being more successful in reproduction.

• that the dull feathers in species 2 was more successful in reproduction.

If you observed sea turtles hatching, you would see them breaking out of their shells, and the young hatchlings would head towards the ocean as quickly as possible. This is an example of

• instinctive behavior.

• a physical adaptation.

• learned behavior.

• baby behavior.

An example that describes a beneficial mutation is

• the incredible hulk.

• a bird beak that is not tough enough to eat the food available.

• a teenager.

• a corn stalk that produces more ears of corn.

A dandelion’s seeds are dispersed by

• water

• wind

• air

• flying

Fish tend to lay hundreds to thousands of eggs instead of just a few eggs because the more eggs produced will

• give them more babies.

• keep them away from predators.

• will increase the chances of at least some eggs hatching and surviving.

• provide more instinctive behavior.

A plant might bloom in the fall instead of the spring because

• the plant is better suited to grow in a cooler climate.

• the plant is more likely to attract pollinators.

• the plant is better suited to grow in a warmer climate.

• the plant is more likely to begin the fertilization process.