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1. In the hierarchy of structural organization in living systems, a tissue (a) i

ID: 148783 • Letter: 1

Question

1.       In the hierarchy of structural organization in living systems, a tissue

(a)      is a collection of distinctively different types of cells that work cooperatively to accomplish a specific task.

(b)      is a collection of very similar (or identical cells) cells that have differentiated for a specific purpose.

(c)      is a collection of membrane-bound structures that collectively form the structure of a cell.

(d)      is a collection of monomer units that are linked to form a single covalently-bound molecule.

(e)      can refer to any level of structural organization that has a defined function or purpose.

2. In the hierarchy of structural organization in living systems, an organ

(a) is a collection of distinctively different types of cells that work cooperatively to accomplish a specific task.

(b) is a collection of very similar (or identical cells) cells that have differentiated for a specific purpose.

(c) is a collection of membrane-bound structures that collectively form the structure of a cell.

(d) is a collection of monomer units that are linked to form a single covalently-bound molecule.

(e) can refer to any level of structural organization that has a defined function or purpose.

Explanation / Answer

1. B

A tissue is a collection of very similar or identical cells grouped together to perform a particular function.

Eg- nerve tissue, xylem tissue etc.

2. A

An organ is a collection of two or more different types of tissues. Eg- heart , it contains different tissues specific to perform different different tasks.