Question

Categorize the following descriptions and examples as representative of either simple or complex tissues.

Option 1: Simple tissues
Option 2: Complex tissues

Answer 1

Option 1: Simple tissues

Option 2: Complex tissues

Step-by-step explanation:

Simple tissues consist of a single type of cells that perform a specific function. Examples include parenchyma, collenchyma, and sclerenchyma. Parenchyma cells are fundamental in photosynthesis, storage, and secretion. Collenchyma cells provide structural support, found in young plant parts. Sclerenchyma cells offer rigidity and strength, present in mature plant tissues like stems and seeds.

On the other hand, complex tissues are composed of multiple cell types working together to perform specialized functions. Vascular tissues, xylem, and phloem are prime examples. Xylem transports water and minerals upwards while providing structural support. Phloem moves organic nutrients throughout the plant. Both xylem and phloem consist of different cell types, including vessel elements, tracheids, sieve tubes, and companion cells, collaborating to facilitate fluid movement and structural support in plants. The complexity arises from the coordination and synergy among various cell types within these tissues, enabling plants to transport vital substances and maintain their structure and growth.

Answer 2

Simple tissues are composed of similar cell types and include epithelial, muscle, and nervous tissues. Complex tissues have different cell types and include connective tissue. Students can identify complex tissues under a microscope by noticing a variety of cell types.

Step-by-step explanation:

To categorize tissues as either simple tissues or complex tissues, one must consider the composition and function of the tissues in question. Simple tissues are composed of similar cell types, while complex tissues are composed of different cell types.

In the context of multicellular, complex organisms, we have four primary types of tissues: epithelial, connective, muscle, and nervous tissues. These can combine to form organs and organ systems, each with specialized functions.

• Epithelial tissue lines the surfaces of the body and is made up of closely packed cells, making it a simple tissue.
• Connective tissue supports and binds other tissues with many different cell types, which qualifies it as a complex tissue.
• Muscle tissue, which allows movement, can be considered a simple tissue as it is composed of cells that work together in a uniform function.
• Nervous tissue, responsible for sensing stimuli and transmitting signals, consists primarily of nerve cells, so it is also a simple tissue.

When students are asked to sort tissue slides into simple and complex tissues, they should look for diversity in cell types under the microscope to identify complex tissues.