Question

write the characteristics, location and function of collecting and sclerenchyma tissues... also of protective tissues and stomata​

Answer 1

Answer:

Sclerenchyma:-

(i)Characteristics:-

Sclerenchyma cells have thick, lignified secondary walls, lack cell contents at maturity, and occur throughout all plant tissues. These features make sclerenchyma tissues hard, rigid, and somewhat brittle. Sclerenchyma cells can occur as aggregates within ground tissue (sclereids or stone cells or as elongated fibers.

(ii)Location:-

They are found mainly in the cortex of stems and in leaves. The major function of sclerenchyma is support. Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin. Their size, shape, and structure vary greatly.

(iii)Functions:-

Plants require cells that are bound together and have a strong outer layer known as a cell wall. Sclerenchyma cells are strong, thick cells that provide most of the support in a plant. They are known to have extremely thick cell walls and do not participate in many of the other activities of the developing plant, such as photosynthesis, because their focus is strictly on support and structure.

As a matter of fact, when sclerenchyma cells are fully mature, they die. Once they're dead, they simply maintain the structure of the plant and do not require further maintenance, freeing the plant to concentrate on other areas while having the support and strength it needs.

Protective tissues:-

Protective tissues are usually present in the outermost layer of the plant body such as leaves, stem and roots and offer protection to the plant body. They prevent desiccation, mechanical injury, and infection in plants. Types of protective tissues: Epidermis. Cork.

Stomata:-

Stomata are tiny openings or pores in plant tissue that allow for gas exchange. Stomata are typically found in plant leaves but can also be found in some stems. Specialized cells known as guard cells surround stomata and function to open and close stomatal pores.

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