Question

What is simple tissue? Classify and explain its different types with suitable diagrams.​

Answer 1

Simple tissue: These tissues are composed of cells that are structurally and functionally similar. Thus, these tissues are all made of one type of cell.​

Types of simple tissues​

Simple are primarily of three types, parenchyma, collenchyma and sclerenchyma.​

Parenchyma​

• These are rounded cells with thin cell walls, small nucleus and a large vacuole. It may store food, provide temporary support.​

Collenchyma​

• It is a living tissue that acts as a mechanical tissue and provides mechanical support to young dicot stems.​

• The cells are elongated with deposition of cellulose in the corners that contain few chloroplasts.​

• Intercellular space is mostly absent.​

​Sclerenchyma​

• It is a dead tissue with dead cells that are devoid of protoplasm.​

• The cell walls are thickened due to lignification.​

• The cavity/lumen is nearly absent due to lignified walls.​

• The cells are closely packed and lack intercellular spaces.​