Life Science

These are the Texas Essential Knowledge and Skills (TEKS). Each line describes what students are expected to know and be able to do by the time they take the STAAR assessment. I have bolded the skill portion of each student expectation to highlight what students must demonstrate.

Organisms and Environments

5.12 Organisms and environments The student describes patterns, cycles, systems, and relationships, within environments

5.12 (A) Observe and describe how a variety of organisms survive by interacting with biotic and abiotic factors in a healthy environment

5.12 (B) predict how changes in the ecosystem affect the cycling of matter and flow of energy in a food web

5.12 (C) describe a healthy ecosystem and how human activities can be beneficial or harmful to an ecosystem

4.12 (B) describe the cycling of matter and flow of energy through food webs, including the roles of the Sun, producers, consumers, and decomposers

3.12 (B) identify and describe the flow of energy in a food chain and predict how changes in a food chain such as removal of frogs from a pond or bees from a field affect the ecosystem

3.12 (D) identify fossils as evidence of past living organisms and environments, including common Texas fossils

Structure, Function, and Survival

5.13 Organisms and environments The student knows that organisms undergo similar life processes and have structures and behaviors that help them survive within their environments

5.13 (A) analyze the structures and functions of different species to identify how organisms survive in the same environment

5.13 (B) explain how instinctual behavioral traits such as turtle hatchlings returning to the sea and learned behavioral traits such as orcas hunting in packs increase chances of survival

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