GED Science Practice

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

Prepare for the GED Science Test with comprehensive quizzes and study tools designed to enhance your understanding of scientific concepts. Engage with a variety of questions and deepen your knowledge for a successful exam experience!

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.

If an organism is described as "invertebrate," what does it mean?

Has a backbone
Lacks a backbone or spinal column
Lives in water
Is microscopic in size

The correct answer is: Lacks a backbone or spinal column

Describing an organism as "invertebrate" specifically means that it lacks a backbone or spinal column. Invertebrates are a diverse group of animals, and they make up the majority of the animal kingdom, encompassing several classes such as mollusks, arthropods, and cnidarians. This classification distinguishes them from vertebrates, which have a defined spinal column. Understanding this distinction is important in biology as it helps categorize organisms based on their structural features and evolutionary relationships. The other options relate to different characteristics but do not accurately define what an invertebrate is.