Identifying Biological Tissues
A tissue is a level of organization in multicellular organisms, consisting of a group of similar cells and their extracellular matrix that perform a specific function. Let's examine the options:
- Nerves: Composed of specialized cells (neurons) and glial cells, nerves form nervous tissue, responsible for transmitting signals.
- Blood: Considered a specialized connective tissue, blood consists of plasma (the matrix) and various cells (red blood cells, white blood cells, platelets).
- Muscles: Muscle tissue is made up of cells that contract, enabling movement. There are three types: skeletal, smooth, and cardiac muscle.
- Red blood cells: These are individual cells (erythrocytes) responsible for oxygen transport. While they are components of blood tissue, they are single cells, not a collection of cells forming a tissue.
Why Red Blood Cells Are Not a Tissue
The key distinction lies in the definition of a tissue. A tissue is an assembly of multiple cells working together. Red blood cells are individual cellular units. Although they are vital components of the blood tissue, they do not form a tissue on their own.
Therefore, Red blood cells are not classified as a tissue.
Important Questions from Biology
Which of the following statements about living and non-living being is/are correct?
1. While living being can demonstrate growth and repair, non-living being cannot.
2. While living being demonstrates metabolic processes, non-living being does not.
Select the correct answer using the code given below.Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?
Transformation of meristematic cells into specific permanent tissues occurs by the process of
If human blood is placed in a 2% detergent solution, what will happen to the RBC?
