Complex Tissues: Cellular Composition
Complex tissues in biology are defined by their composition.
They are organized structures consisting of more than one type of cells that work together to perform specific functions.
Understanding Complex Tissues
- Definition: Complex tissues are aggregates of different cell types that collaborate on a common task.
- Functionality: The different cell types contribute specialized roles, enabling the tissue to carry out functions efficiently.
- Examples: In plants, the primary examples are xylem and phloem, which constitute the vascular tissue. Xylem includes tracheids, vessel elements, xylem parenchyma, and xylem fibers. Phloem includes sieve elements, companion cells, phloem parenchyma, and phloem fibers.
Evaluating Options
- Option 1 (more than one type of cells): This aligns with the definition of complex tissues, as seen in xylem and phloem.
- Option 2 (one type of cells): This describes simple tissues (like parenchyma, collenchyma, sclerenchyma), not complex ones.
- Option 3 (no cells): This is incorrect; tissues are fundamentally composed of cells.
- Option 4 (only one cell): This is also incorrect; tissues are multicellular structures.
Therefore, complex tissues are characterized by the presence of multiple cell types.
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
The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
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
