Pre-Lab: Exploring Plant Diversity
Problem How many different kinds of plants are in a small ecosystem?
Materials notebook, protective work gloves, measuring tape, tweezers, scissors, small plastic bags, labels, hand lens, field guides for plants, camera (optional)
Lab Manual Chapter 22 Lab
Skills Focus Observe, Measure, Classify, Infer
Connect to the There are more than 290,000 known species of plants that exist on Earth—from tiny green algae to large-leaved ferns to imposing redwood trees. What do these species have in common? They all need light, carbon dioxide, oxygen, water, and minerals to survive. But plant species vary in the way they obtain and retain resources.
Plants have adaptations that allow them to succeed in different habitats. Thus, you will not find 290,000 species of plants in your community. But you should be able to find a variety of plants. In this lab, you will survey a small ecosystem and identify as many plant species as possible.
Review What are the features that botanists use to divide the plant kingdom into five major groups?
Compare and Contrast Compare abiotic and biotic factors in an ecosystem.
Applying Concepts Suppose an ecosystem includes a stream or pond. Would you include that part of the ecosystem in your plant survey? Explain your answer.
Preview the procedure in the lab manual.
Design an Experiment What are some ways that you can make sure that you survey all the plants in your ecosystem?
Classify What should you do if you are not sure that an organism is a plant?
Infer Why might you want to use a regional field guide rather than a national field guide when identifying plants?
Visit Chapter 22 online to test yourself on chapter content and to find activities to help you learn.
Untamed Science Video The Untamed Science biologists interview plant experts to learn about healing chemicals manufactured by plants.
Data Analysis Investigate bracken (a type of fern) to see if there is a connection between bracken and stomach cancer.
Tutor Tube Is this plant a girl? Compare animals and plants to understand plant reproduction.
Art Review See how well you can distinguish monocots and dicots.
InterActive Art Review and compare life cycles of vascular and nonvascular plants.
Art in Motion Follow the process of pollination and fertilization in a pine to see how a plant embryo is formed.