BW-A2-3.5-W1

3.5 Populations and ecosystems worksheet | WJEC Biology

15 exam-style questions, 147 marks. Download the question paper and its matching mark scheme below.

Worksheet 1: 3.5 Populations and ecosystems (147 marks)

Written by BioWelsh in the style of the WJEC A level Biology examination. Not an official WJEC paper.

Image credits

All graphs and drawings without an entry are original BioWelsh drawings.

Image 10.1: Photo: Bering Land Bridge National Preserve, CC BY 2.0 (Wikimedia Commons), https://creativecommons.org/licenses/by/2.0. Cropped and resized.
Image 13.1: Photo: soybean root nodules, public domain (Wikimedia Commons). Letter added.
Image 14.2: Photo: Eric Vance, United States Environmental Protection Agency, public domain (Wikimedia Commons).