EVERYDAY SCIENCE

Detailed explanation-1: -Collenchyma cells occur widely in eudicotyledons and provide mechanical support for growing organs. At maturity, the cells are elongated and have thick, non-lignified walls, which in celery contain cellulose and pectic polysaccharides, together with xyloglucans and heteroxylans and heteromannans.

Detailed explanation-2: -Collenchyma tissue is made up of elongated living cells filled with water, and the pressure of the water against the cell walls creates a stiffness that gives celery its crunch. Collenchyma is found in plant stems, leaves and flowers.

Detailed explanation-3: -The stretchy properties of the strands of celery are due to collenchyma tissue. Collenchyma tissue is found immediately under the epidermis, young stems, petioles, and leaf veins.

Detailed explanation-4: -The “strings” of a celery stalk are an example of collenchyma cells. Sclerenchyma cells also provide support to the plant, but unlike collenchyma cells, many of them are dead at maturity. There are two types of sclerenchyma cells: fibers and sclereids.