campus tour lab 5 - Laboratory 4 Campus Botany Tour...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Campus Botany Tour Laboratory 4
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 L ABORATORY 4 C AMPUS T OUR Materials:for lab Bring a digital camera if you have one available Teaching Objectives Plant diversity: Applications and importance Plant form and function: Plant survival and human use Local and global examples of terrestrial plant types Student Learning Objectives (1)View the plant diversity on campus (2)Know how to access information regarding plant identification (3)be aware of differences between mosses, ferns, and flowering plants INTRODUCTION Plants are the producers in a food web. Solar energy is stored in the chemical bonds of the sugars produced by plant photosynthesis, the biochemical process by which plants utilize light energy from the sun to produce sugar from carbon dioxide and water. Consumers in a food web derive their energy by breaking down these bonds during respiration, which releases the stored energy. Energy flowing within the food web therefore enters it by way of plant photosynthesis. The importance of plants to the survival of humans and other animals cannot be over-emphasized. Our basic needs of oxygen, food, shelter, and clothing are provided, directly or indirectly, by plants. Because plants absorb carbon dioxide and release oxygen in photosynthesis, they may be a significant factor in reducing the "greenhouse effect", which is caused by human activities that increase the carbon dioxide in the atmosphere . Deforestation, and the burning of fossil fuels (oil, coal, and gas) are two examples of such activities. There are about 235,000 species of flowering plants in existence today. Approximately a third of these are native to temperate regions, and the remainder are found in the tropics. A vast number of tropical plants are in danger of extinction in the wild within the next hundred years because the human populations of most tropical countries continue to double every 20 to 25 years, and because the forests are rapidly being cleared for wood and cultivation. More than half of the world's tropical forests have already been cleared, and experts predict that most of what is left will be gone in less than 50 years. With them will vanish a quarter of all life-forms including, perhaps, a plant that could provide a cure for cancer or help end world hunger.
Background image of page 2
C AMPUS T OUR 3 So little is known of the plants of the tropics that many have not even been given scientific names. Preserved samples of these plants may well be all that are passed on to our descendants in the 21 St century and beyond. The useful properties these plants possess can certainly be determined better today, when species are still in existence, than at any point in the future. More than 560 kinds of trees and other plants have been used in landscaping the Manoa campus of the University of Hawai'i. They provide students and teachers with a living botanical laboratory drawn from many parts of the tropics. This week's lab is designed to introduce you to the incredible diversity within the plant kingdom, to note some of the
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 13

campus tour lab 5 - Laboratory 4 Campus Botany Tour...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online