This resource turns symbiotic relationships into a complete, ready to use review for Grade 9-12 biology, covering the same NGSS standard from three different angles.

The set includes questions like "Which symbiotic relationship is demonstrated by the clownfish and sea anemone?", "What happens in a parasitic relationship?", and "Which of the following is a characteristic of mutualistic relationships?"

What's Inside?

• 30 Multiple Choice questions as a separate print ready PDF worksheet
• 30 True or False questions as a separate print ready PDF worksheet
• 30 Short Answer questions as a separate print ready PDF worksheet
• Includes Answer Key with Explanations for all 90 questions
• 6 print ready PDF files, 26 pages in total

All three worksheets cover the same topic in different question styles. That means you can use one as a pretest, another for practice or homework, and the third as a follow up quiz, without students ever seeing the same question twice.

Ways to Use This Resource

• Homework or review before a quiz
• Review before a lab or class discussion
• Self checking stations, since every answer key includes explanations
• Bell ringers and warm ups during the unit
• First look diagnostic to plan your unit

This set is part of a complete NGSS aligned biology unit. The unit also covers Resources and Population Size, Competition in Ecosystems, Predator Prey Dynamics, Niches and Habitat Use, Keystone Species and Ecosystem, and Invasive Species and Ecosystem, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.

Suitable for Grade 9-12 biology classes, and for NGSS aligned review at any point in the school year. This set is aligned to NGSS standard HS-LS2-1.