Winter Plant Observations Strategies for Survival (back to lesson) National Science Education Standards r Inquiry Ask a question about objects, organisms, events. Life Science Organisms have basic needs. Each plant or animal has different structures that serve different functions in growth, survival, reproduction. Plants and animals have life cycles. All organisms must be able to obtain and use resources, grow, reproduce, and maintain stable internal conditions in a constantly changing external environment. (5-8) Species acquire many of their unique characteristics through biological adaptation. (5-8)   Copyright 2005 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form