Green Bridge Learning Resource For Transport

Overview

Transport systems in both plants and animals are crucial for the survival and proper functioning of these organisms. One fundamental aspect to consider is the relationship between the increase in size and complexity of an organism and the necessity for a well-developed transport system. As organisms grow larger and more intricate, the need to efficiently transport essential materials such as nutrients, gases, and wastes becomes imperative for their survival. This course material will delve into the fascinating mechanisms by which plants and animals have evolved transport systems to meet their specific needs.

To start, understanding the sources and forms of materials that are transported within organisms is key to appreciating the complexity of their transport systems. Plants uptake water and minerals from the soil through their roots, while animals obtain nutrients through various modes of nutrition such as herbivory, carnivory, omnivory, or parasitism. These materials are then transported in different forms based on the organism's requirements, whether in the form of sap in plants or blood and lymph in animals.

Moving on to the circulatory system, a vital component in animals, we will explore the general structure and function of this system. The hepatic portal vein, pulmonary vein and artery, aorta, renal artery, and vein each play specific roles in the circulation of blood throughout the body, highlighting the importance of a well-coordinated transport system in maintaining homeostasis.

In plants, the vascular system consisting of the phloem and xylem serves as the primary means of transportation of nutrients, water, and other essential substances. Understanding the specific functions of these two types of plant tissues sheds light on how plants distribute essential materials efficiently.

When it comes to the media and processes involved in transportation, various mechanisms such as diffusion, osmosis, plasmolysis, turgidity, animal transpiration pull, root pressure, and active transport come into play. These mechanisms enable the movement of substances within organisms, whether through body fluids, blood, or lymph, emphasizing the significance of different modes of transportation.

Overall, this course material will not only focus on the form and functions of transport systems in plants and animals but also highlight the intricate processes and mechanisms that ensure the survival and proper functioning of these organisms. By the end of this study, students will have a comprehensive understanding of the complexities involved in transportation within biological systems and the critical role it plays in sustaining life.

Objectives

Understand the Relationship Between Size/Complexity and Transport Systems
Compare Specific Functions of Different Blood Vessels
Understand Functions of Phloem and Xylem
Identify Various Media of Transportation
Describe the General Circulatory System
Identify Sources and Forms of Transported Materials
Identify Organs of the Plant Vascular System
Describe Mechanisms of Transportation in Organisms

Lesson Note

The concept of transport in biology refers to the movement of substances from one part of an organism to another. This vital process is essential for maintaining life as it enables the distribution of nutrients, gases, hormones, and waste products to and from cells.

Lesson Evaluation

Congratulations on completing the lesson on Transport. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.

You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.

Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.

Describe the function of the phloem in plants. A. To transport water and minerals from roots to leaves B. To transport food from leaves to other parts of the plant C. To provide structural support to the plant D. To facilitate gas exchange in the plant Answer: B. To transport food from leaves to other parts of the plant
Identify the main function of the xylem in plants. A. To transport food from leaves to other parts of the plant B. To facilitate gas exchange in the plant C. To provide structural support to the plant D. To transport water and minerals from roots to leaves Answer: D. To transport water and minerals from roots to leaves
What is the main composition of blood in animals? A. Red blood cells only B. White blood cells only C. Plasma, red blood cells, white blood cells, and platelets D. Plasma and red blood cells Answer: C. Plasma, red blood cells, white blood cells, and platelets
Which of the following is a mechanism of transportation in organisms involving the movement of water across a semi-permeable membrane? A. Active transport B. Diffusion C. Osmosis D. Transpiration pull Answer: C. Osmosis
Identify the organ in the plant vascular system responsible for transporting sugars produced during photosynthesis. A. Phloem B. Xylem C. Stomata D. Root hairs Answer: A. Phloem

Recommended Books

	Biology: The Dynamics of Life Subtitle Transportation Systems in Plants and Animals Publisher Glencoe/McGraw-Hill Year 2009 ISBN 978-0078802843
	Biology: The Unity and Diversity of Life Subtitle Transport Mechanisms in Organisms Publisher Cengage Learning Year 2013 ISBN 978-1133584147