Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 6, Problem 1CT
Summary Introduction
To determine: How the growing plants get the materials necessary for increases in size.
Concept introduction: Plants are multicellular, photosynthetic eukaryotes of the kingdom plantae. Plants are made up of cells like other organisms.. The growth of the plants involves an increase in the cell numbers by cell division and an increase in cell division. Plants exhibit natural variation in their structure and form.
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About 200 years ago, Jan Batista van Helmont wanted to know where growing plants get the materials necessary for increase in size. He planted a tree seedling weighing 2.2 kilograms (5 pounds) in a barrel filled with 90 kilograms (200 pounds) of soil and then watered the tree regularly. After 5 years, the tree had gained almost 75 kilograms (164 pounds), and the soils weight was unchanged. He incorrectly concluded that the tree had gained all of its additional weight by absorbing water. How did the tree really gain most of its weight?
You are interested in determining the amount of fertilizer your lavender plants need to increase their growth. You get 5 pots of plain soil. You transplant one lavender plant into each pot and measure the height of the plant. You label each pot with letters A-E. A does not get any fertilizer, pot B gets 2mg of fertilizer, pot B gets 4 mg of fertilizer, pot C gets 6 mg of fertilizer, pot D gets 8 mg of fertilizer, and pot E gets 10 mg of fertilizer. For one month you water the plants the same amount and each plant receives the same amount of light. After one month you measure the plants again. The results of the experiment are below.
A. Write a testable hypothesis for this experiment.
B. Write a prediction based on your hypothesis.
C. What is the dependent variable?
D. What is the independent variable?
E. Do the results support or refute your hypothesis?
Results
Pot Initial Measurement (cm) Final Measurement (cm)
A 5.2…
Jenny wanted to plant sunflowers, but wasn't sure of the best place to plant them on her property - so she decided to investigate! Jenny planted 6 sunflowers where they would get sun all day, 6 where they would get some sun and some shade, and 6 where they would be in total shade all day. Jenny watered all of the sunflowers at the same time of day with the same amount of water. After 3 months Jenny measured how tall the sunflowers in each location were.
What is the hypothesis that Jenny was testing? Choose all that apply.
Question options:
A
Amount of water affects plant growth
B
Plant growth is affected by light exposure
C
Plant growth is affected by the time of day of watering
D
Amount of light affects plant growth because light is required for photosynthesis
Chapter 6 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 6 - A cat eats a bird, which ate a caterpillar that...Ch. 6 - Plants use__________ as an energy source to drive...Ch. 6 - Most of the carbon dioxide that plants use for...Ch. 6 - Which of the following statements is incorrect? a....Ch. 6 - Prob. 5SQCh. 6 - When a photosystem absorbs light, __________. a....Ch. 6 - Prob. 7SQCh. 6 - What accumulates inside the thylakoid compartment...Ch. 6 - The atoms in the molecular oxygen released during...Ch. 6 - Prob. 10SQ
Ch. 6 - Prob. 1DAACh. 6 - Energy Efficiency of Biofuel Production Most of...Ch. 6 - Energy Efficiency of Biofuel Production Most of...Ch. 6 - The Calvin-Benson cycle starts when a. light is...Ch. 6 - Which of the following substances does not...Ch. 6 - Closed stomata ________. a. limit gas exchange b....Ch. 6 - In C3 plants, ______ makes sugar production...Ch. 6 - Match each with its most suitable description....Ch. 6 - Prob. 1CTCh. 6 - While gazing into an aquarium, you see bubbles...Ch. 6 - AC3 plant absorbs a carbon radioisotope (as part...Ch. 6 - As you learned in this chapter, cell membranes arc...
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