Biology STAAR (State of Texas Assessments of Academic Readiness) Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Test your knowledge for the Biology STAAR Exam. Prepare with interactive quizzes, explore detailed questions with solutions, and enhance your understanding to excel!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is defined as a biotic factor in an ecosystem?

Temperature
Air currents
Living organisms
Water availability

The correct answer is: Living organisms

A biotic factor in an ecosystem refers to any living component that affects or interacts with the organisms within that ecosystem. This includes plants, animals, fungi, and microorganisms. Living organisms play a crucial role in shaping their environment by competing for resources, preying on one another, forming symbiotic relationships, and contributing to nutrient cycling. In contrast, the other choices relate to abiotic factors, which are non-living elements that influence ecosystem dynamics. Temperature, air currents, and water availability are all vital components of an ecosystem, but they fall under the category of abiotic factors, as they are not alive and do not possess biological characteristics. Understanding the distinction between biotic and abiotic factors is essential for studying ecosystem interactions and overall environmental health.