Give your biology students a focused look at keystone species and ecosystem with ninety questions built for real classroom use, whether you are starting a new unit or reviewing before a test.
The set includes questions like "Which of the following is a consequence of removing a keystone species like the sea otter?", "What happens to biodiversity when a keystone species is lost?", and "What would likely happen if wolves were removed from a forest ecosystem?"
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.
This set is part of a complete NGSS aligned biology unit. The unit also covers Resources and Population Size, Competition in Ecosystems, Symbiotic Relationships, Predator Prey Dynamics, Niches and Habitat Use, 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.
