Section: The Organization of Living Things THE BENEFITS OF BEING MULTICELLULAR 1. How do multicellular organisms grow? _______________________________________________________________ 2. What are three benefits of being multicellular? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ CELLS WORKING TOGETHER 3. What is a tissue? _______________________________________________________________ _______________________________________________________________ 4. What are four basic types of tissues in animals? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 5. What are three basic types of tissues in plants? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ TISSUES WORKING TOGETHER 6. A structure that is made up of two or more tissues working together is called a(n) ______________________. 7. A group of organs working together to perform a particular function is a(n) ______________________.

Question

Name ______________________________ Class ___________________Date __________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 8 Cell: The Basic Units of Life Directed Reading A continued 8. What are examples of plant organs? _______________________________________________________________ ORGANISMS _____ 9. Anything that can perform life processes is a. a cell. b. an organ system. c. a tissue. d. an organism. _____ 10. The term for any organism with only one cell is a. protist. b. unicellular. c. specialized. d. bacteria. _____ 11. Which of these is the lowest level of organization? a. cells b. tissues c. organs d. systems _____ 12. Which of these is the highest level of organization? a. cells b. tissues c. organs d. organ systems STRUCTURE AND FUNCTION 13. The arrangement of parts in an organism is the ______________________. 14. The job the part does within the organism is the ______________________. 15. The millions of tiny air sacs in the lungs are called ______________________.

Answer 1

Certainly! Here are the answers to your questions based on the organization of living things:

1. How do multicellular organisms grow?
   Multicellular organisms grow by increasing the number of cells through cell division, enabling larger body sizes and more complex structures.

2. What are three benefits of being multicellular?

   • Multicellular organisms can develop specialized cells, tissues, and organs that perform specific functions.
   • They can grow larger and have more complex structures compared to unicellular organisms.
   • They have increased efficiency in carrying out life processes due to the division of labor among different cell types.

3. What is a tissue?
   A tissue is a group of similar cells that work together to perform a specific function.

4. What are four basic types of tissues in animals?

   • Epithelial tissue
   • Connective tissue
   • Muscle tissue
   • Nervous tissue

5. What are three basic types of tissues in plants?

   • Dermal tissue
   • Vascular tissue
   • Ground tissue

6. A structure that is made up of two or more tissues working together is called a(n) organ.

7. A group of organs working together to perform a particular function is a(n) organ system.

8. What are examples of plant organs?

   • Roots
   • Stems
   • Leaves
   • Flowers

9. Anything that can perform life processes is a:
   d. an organism.

10. The term for any organism with only one cell is:
    b. unicellular.

11. Which of these is the lowest level of organization?
    a. cells.

12. Which of these is the highest level of organization?
    d. organ systems.

13. The arrangement of parts in an organism is the:
    structure.

14. The job the part does within the organism is the:
    function.

15. The millions of tiny air sacs in the lungs are called:
    alveoli.

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