Other than main functions that almost all roots perform, there are
specialised functions performed by roots of some plants.
Name two such plants and the specialized functions performed by their
roots.
Answers
Stems have four main functions which are:
Support for and the elevation of leaves, flowers and fruits. The stems keep the leaves in the light and provide a place for the plant to keep its flowers and fruits.
Transport of fluids between the roots and the shoots in the xylem and phloem
Storage of nutrients
Production of new living tissue. The normal lifespan of plant cells is one to three years. Stems have cells called meristems that annually generate new living tissue.
Stems have two pipe-like tissues called xylem and phloem. The xylem tissue transports water by the action of transpiration pull, capillary action and root pressure. The phloem tissue consists of sieve tubes and their companion cells. The two tissues are separated by cambium which is a tissue that divides to form xylem or phloem cells.
Its primary functions are :
anchorage of the plant
absorption of water
dissolved minerals and conduction of these to the stem
storage of reserve foods.
absorption of water and inorganic nutrients
anchoring of the plant body to the ground, and supporting it
storage of food and nutrients
trans locating water and minerals to the stem.
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