Describe briefly two levels of cell organization in living organisms giving an example of each type.

(i) Tissue: it is a collection of cells, similar in sizes, shape and function. Examples of tissues in plant are the xylem, phloem, etc.

(ii) Organs: It is a collection of cells, similar in size, shape and function. Examples of organs in plants are the root, stem, leaf, etc. Examples of animal organs are the heart, kidney, eyes, etc.

Download WAEC Biology Theory Questions & Answers