MCAS Review - Life Science

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Lightning from a thunderstorm strikes a 21 tree that falls to the forest floor and dies. During the next few years the dead tree undergoes many changes. What organisms are most likely responsible for the biological and chemical changes to the tree?

What do a caterpillar, mold and fern have in common?

Which of the following structures is not present in animal cells?

The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following?

While hiking, a student finds an unusual plant-like organism that appears to lack chlorophyll. When the student examines a sample, he sees many cells with cell walls and no chloroplasts. This organism is most likely a member of what Kingdom?

Which of the following best describes a role of mushrooms in ecosystems?

Which of the following materials are direct products of photosynthesis?

In the human body, which system functions primarily to defend the body against disease?