Questions: What Is a Life Cycle?

Question 1

What makes a life cycle a 'cycle' instead of a straight line?

• A. Because animals walk in circles
• B. Because the stages repeat — adults produce offspring that go through the same stages
• C. Because life cycles always take exactly one year
• D. Because every animal ends up back where it started

Answer: (B)

A life cycle is a cycle because it repeats. An adult produces offspring, those offspring grow into adults, and those adults produce more offspring. The same stages happen over and over across generations, which is why we draw life cycles as circles.

Question 2

Only animals have life cycles.

• T. True
• F. False

Answer: False

Every living thing has a life cycle. Plants go from seed to sprout to adult plant to making seeds. Animals go from birth or hatching to growing up to adulthood to having babies. Even mushrooms and bacteria have life cycles. It is a universal feature of life.

Question 3

What do all life cycles have in common?

Model answer: All life cycles include being born or starting life, growing and developing, reaching adulthood, and producing offspring that start the cycle again.

Despite looking very different, every life cycle follows the same basic pattern: begin life, grow, reach maturity, reproduce. A sunflower and a whale have very different life cycles, but both go through these same core stages. That shared pattern is what makes them all 'life cycles.'