CBA 4 Review (TEKS 7.12 A & B, 7.13 C & D, 7.14 A & B)

Front

What is a cladogram?

Back

A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

Front

What are eukaryotic organisms?

Back

Eukaryotic organisms are living beings whose cells have a nucleus enclosed within membranes, unlike prokaryotes, which do not.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process by which nitrogen in the atmosphere is converted into ammonia or related nitrogenous compounds in soil, making it available for plants.

Front

Why are protozoans and fungi important to ecosystems?

Back

Protozoans and fungi help break down dead plant and animal matter, recycling nutrients back into the ecosystem.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation that shows the flow of energy at different trophic levels in an ecosystem.

Front

What happens to energy as it moves up trophic levels in an energy pyramid?

Back

The amount of available energy decreases at each higher trophic level.

Front

What is the significance of fur color change in snowshoe hares?

Back

The change in fur color helps snowshoe hares blend into their environment, providing camouflage from predators.

Front

What role does animal waste play in nitrogen levels in soil?

Back

Animal waste contributes organic nitrogen to the soil, which can increase nitrogen levels and promote plant growth.

Front

What is the relationship between traits and survival in natural selection?

Back

Traits that enhance survival and reproduction become more common in a population over generations due to natural selection.

Front

What is the ideal nitrogen level for healthy plant growth?

Back

The ideal nitrogen level in soil for healthy plant growth is 40 parts per million (ppm).