Question

Name any two stem modifications and their functions for class 6
please fast ​

Answer 1

TWO STEM MODIFICATION

● Rhizomes. A horizontal shoot that grows just below the surface .

● Bulbs. Vertical underground shoots consisting mostly of enlarged bases of leaves that store food .

FUNCTION OF RIZOMES

The primary function of the rhizome is the storage of nutrients, including carbohydrates and proteins, until the plant requires them for the growth of new shoots or to survive the winter in a process termed vegetative reproduction. Farmers use vegetative reproduction to laterally propagate plants such as hops, ginger and various grass species. Some rhizomes are also consumed or used as a seasoning, including ginger and turmeric .

FUNCTION OF BULB

Bulbs enable many common garden ornamentals, such as the narcissus, tulip, and hyacinth, to produce their flowers rapidly, almost precociously, in early spring when growing conditions are favourable. Other bulb-producing plants, such as the lilies, flower in the summer, while a few, such as the meadow saffron, bloom in the fall. Bulb-producing species are especially abundant in the lily (Liliaceae) and amaryllis (Amaryllidaceae) families. A few bulb-producing species are of economic importance to humans because of the taste and nutritive value of their fleshy leaves; included among such species are the onion and its relatives the shallot, garlic, and leek. Other bulbs contain poisonous compounds—such as the red squill (Drimia), the bulbs of which are the source of a highly effective rat poison .