Question

use the drop-down menus to identify the terms described below. 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 duct hormone a channel or tube that conveys a substance

Explanation:

First Term (a group of cells that secretes substances...):

A gland is a group of cells that secretes substances (like hormones) into blood or organs. Duct is a tube, hormone is a substance, so gland matches.

A hormone is a substance made by cells to help other cells function. Gland is cells, duct is a tube, so hormone matches.

A duct is a tube/channel that carries substances (like from glands). Gland is cells, hormone is a substance, so duct matches.

Answer:

gland

Second Term (a substance produced by cells...):