Concept explainers
Introduction:
Muscle, connective, epithelial, and nervous tissue are the four basic types of animal tissue: These tissues are joined together in structural units to perform a common function of composing different organs.
Answer to Problem 1SQ
Correct answer:
Epithelial tissues are sheetlike with one free surface. Hence, the correct answer is option a.
Explanation of Solution
Reason for correct answer:
Option a. is given as, “Epithelial.”
Epithelial tissues are associated with a sheet-like group of cells. The epithelial tissues cover the external body areas and internal cavities. They produce substances that help them to attach with the connective tissue beneath them and form the basement membrane. Besides this, they are freely exposed to the environment on the other side.
Reason for incorrect answer:
Option b. is given as, “Connective.”
The connective tissues are not so tightly packed as epithelial tissues. Hence, option b. is incorrect.
Option c. is given as, “Nervous.”
Nervous tissue act as the messenger in the nervous system. They do not have any free surface. Hence, option c. is incorrect.
Option d. is given as, “Muscle.”
The muscle tissues are present inside the body with no free surface. Hence, option d. is incorrect.
Hence, the options b., c., and d. are incorrect.
The sheetlike tissues with one free surface are known as epithelial tissues. Thus, the correct option is a.
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Chapter 28 Solutions
Biology: Concepts And Applications 9th Biology [jan 01 2014] Starr Cecie; Evers
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