Biology Unit VIIII Assessment: Answer the questions

Question 1

Most of the dry weight of a plant is made up of carbon, oxygen, and hydrogen. The next most abundant element in a plant is likely to be ________.

Answer

5 points  

Question 2

Before deciduous trees go through abscission, they ________.

Answer

5 points  

Question 3

Cutting and burning forests in the tropics releases around ______ of the carbon dioxide added to the atmosphere each year.

Answer

5 points  

Question 4

The increase in greenhouse gases in the atmosphere is most similar to which of the following phenomena?

Answer

5 points  

Question 5

Why does a houseplant growing on a windowsill tend to grow towards the window?

Answer

5 points  

Question 6

The use of chemical pesticides may be reduced by ________.

Answer

5 points  

Question 7

Which of the following food items is actually a unique set of modified leaves?

Answer

5 points  

Question 8

Which type of plant would be expected to suffer the most and the earliest during a drought?

Answer

5 points  

Question 9

The United States represents less than five percent of the world's population. However, it is responsible for ______ of the world's carbon dioxide emissions resulting from burning fossil fuels.

Answer

5 points  

Question 10

Which of the following is considered a Monocot?

Plant Transpiration

Unit VIII Assessment

Introduction

If you have not already, you or someone you know will try to grow a variety of plants either inside your house or outside in a garden. What type of soil do you need? How often should you water the plants? Should you plant them in full sun? Why do some plants need less water and some more? These are questions that many people have about plants. In this activity, you will have a chance to manipulate different variables to see how much water some plants use and how much some lose through transpiration.

Objectives

1. Conduct virtual experiments to determine factors that affect transpiration.
2. Compare and contrast sustainable and unsustainable farming practices.
   
   

Materials

Computer with internet access

Directions

1. Go to: http://glencoe(dot)mcgraw-hill(dot)com/sites/dl/free/0078695104/383946/BL_10.html
2. Read the Purpose and Objectives.
3. Read and follow the information under Procedures and complete the lab for all 4 plants and all 3 variables.
4. Reset the lab and complete the lab for the next set of 4 plants and 3 variables.
5. Record your information in the Results Table provided on this sheet.
6. During and after the lab, answer the questions below.

1. Type all answers directly on the data sheet.
2. Select Save As, and use your last name and student ID as a file name. 
3. Upload the data sheet as a .doc, .docx, or .rtf file when finished.

Questions 1 – 10 are short answer questions and should be answered in 2 to 3 words or 1 to 2 complete sentences. Each question is worth 2 points for a total of 20 points.

1. What are the three different variables that you tested?

1. State your question.

1. State your hypothesis.

1. Describe the process of transpiration.

5.   What environmental factors that you tested increased the rate of transpiration? Was the rate of transpiration increased for all plants tested?

1. Did any of the environmental factors (heat, light, or wind) increase the transpiration rate more than the others? Why?

1. Which species of plants that you tested had the highest transpiration rates? Why do you think different species of plants transpire at different rates?

1. What is your conclusion?

1. Did your results support your hypothesis?

10.  State another question about transpiration that you would like to have answered that you did not answer in this lab.