Question

use the drop - down menus to identify the terms described below.
duct a group of cells that secretes substances into the blood or directly into an organ
a substance produced by cells that helps specific groups of cells to perform specific functions
gland a channel or tube that conveys a substance
duct
hormone

Explanation:

First, correct the first dropdown (the incorrect one initially):

• The description "a group of cells that secretes substances into the blood or directly into an organ" matches the definition of a gland. The initial selection of "duct" was wrong here.
• The description "a channel or tube that conveys a substance" is the definition of a duct.
• The description "a substance produced by cells that helps specific groups of cells to perform specific functions" matches the definition of a hormone.

For the second dropdown (the empty one in the image):

The description is "a substance produced by cells that helps specific groups of cells to perform specific functions", so the correct term is "hormone".

Correcting the first (incorrect) dropdown:

The first dropdown had "duct" selected, but the description "a group of cells that secretes substances into the blood or directly into an organ" is for a gland. So the first dropdown should be "gland", the second (empty) dropdown (for the hormone description) should be "hormone", and the "duct" is for the "channel or tube" description.

• For the first (incorrect) term: A gland is a group of cells that secretes substances (either into blood or an organ).
• For the second (empty) term: A hormone is a substance produced by cells to help other cells perform functions.
• Duct is a channel/tube for conveying substances.

Answer:

• First (incorrectly set to duct) should be: gland (matches "a group of cells that secretes substances into the blood or directly into an organ")
• Second (empty) dropdown: hormone (matches "a substance produced by cells that helps specific groups of cells to perform specific functions")
• Duct matches "a channel or tube that conveys a substance"