Which of the following represents the edible swollen portion of Allium cepa? A. Aerial stem B. Underground stem C. Internodes D. Leaf bases
Hint: > The onion is also known as the bulb onion or common onion. > It is a vegetable that is the most widely cultivated species of the genus allium. > Its close relatives include the garlic, scallion and Chinese onion. > The onion is a biennial or a perennial plant.
Complete answer: In order to solve this question, we need to know more about Allium cepa. Allium cepa: Allium cepa, commonly known as onion, is a worldwide culinary and therapeutic spice belonging to the family Liliaceous. Onion is an essential ingredient in many African sauces and Egypt being the first producer in the continent. Onion is a source of various biologically active compounds, such as phenolic acids, thiosulfinates, and flavonoids etc. The plant has a variety of pharmacological activities including anticancer, antidiabetic, antimicrobial, cardiovascular, antioxidant effects, etc., justifying its possible use in the treatment of various human ailments. > Edible parts: Edible parts are those parts of the plant which are edible or which can be eaten like stem, leaves etc. > Non edible parts: Non edible parts are those parts of the plant which can not be eaten. > Edible swollen part of Allium cepa is leaf bases. Onion (Allium cepa) is a short, modified and underground stem covered by fleshy modified leaves that contain stored food for the shoot. Therefore the edible part of the onion is fleshy leaves. > Aerial stem: A stem with a vertical growth above the ground. > Underground Stem: Underground stems are modified plants that originate from stem tissue but exist under the soil surface. > Internodes: A part of a plant stem between two nodes. > Leaf bases: The leaf base is the lowest part of a leaf lamina that is near the petiole.
So, the correct option is option D. Leaf bases.
Note: Flower is a reproductive part of the plant found in angiosperms. Flower has two types of symmetries: 1. Actinomorphic (Radial symmetry). 2. Zygomorphic (Bilateral symmetry). Parts of flower are: 1. Calyx 2. Corolla 3. Pedicle 4. Gynoecium 5. Androecium