The Edible Onion is naturally a biennial plant, so it takes two years to reach maturity and flower. This means it needs to store food over the winter period, It does this by thickening the bases of its leaves to form a bulb during the first year of growth. The bulb stores sugars and starches for the next growing season and we harvest the onion at this stage to make use of this food store.
Add your answer:
Related Questions
Why are onion cells arranged as they are?
Onion cells are arranged in a closely packaged way. This is so that they layers of the onion can be thick and tough.
Why is a giraffe's tongue so long?
To reach the the inner leaves of a tree
What inner planet atmosphere so heavy and thick that it would crush a human?
Venus
What are onion skin cell?
Onion skin is that filmy stuff between the layers of onions. It's just one cell thick, so it's idea for looking at through a microscope.
What biome has thick waxy leaves?
The tropical rainforest does not have thick waxy needles. The coniferous forest has thick waxy needles so that water on the needles wont easily be evaporated.
What is a inner planet that atmosphere is so thick?
it is Venus.mercury has no atmosphereVenus has a thick atmosphere.which is so thick that we cannot see through it with the help of any telescopeearth has a medium-thin atmospheremars has a thinner atmosphere than that of earth
Why desert plants have thick fleshy stems?
Succulent plants have thick, fleshy stems and/or leaves. In the Americas that includes the cacti.
Why is the Bulb of the onion plant so big?
It is big because before leaves sprout, the bulb is the source of food because without leaves, there is no photosynthesis thus no food unless the bulb feeds the plant (which as I said before, it does). The bulb of the onion also stores energy. Hope this satisfies!
Why is it that onion leaf epidermal cell do not contain choloroplast?
Because an onion develops in the ground, and chloroplasts develop in the sunlight. Therefore no chloroplasts form. Think of it this way: Tree leaves contain chloroplasts because they contain chlorophyll in order for the leaves to turn colors. But who has ever heard of an onion changing colors because it's fall?! Onions dont needchloroplasts, so they dont have them.
Why do the leaf cells of the onion scale contain no chloroplasts?
Because an onion develops in the ground, and chloroplasts develop in the sunlight. Therefore no chloroplasts form. Think of it this way: Tree leaves contain chloroplasts because they contain chlorophyll in order for the leaves to turn colors. But who has ever heard of an onion changing colors because it's fall?! Onions dont need chloroplasts, so they dont have them.
Does onion have chloroplasts in their cells?
The part of the onion you eat is underground. So no, onion has no chloroplasts in their cells.
Can onions carry out photosynthesis?
Onions themselves are root bulbs, and so cannot photosynthesize. Keeping that in mind, onion leaves and the sprouting plant from the onion bulb CAN photosynthesize like all other leaved plants. Hope this helps! Daniel A
What plants and animals live in thick rain forest?
Different types of monkeys, sloths and plants with big leaves so they can get sunlight.
Why are the onion cells so close together?
because an onion is a solid.
What are the layers in the rain forest?
Emergent layer where trees poke higher, canopy layer thick shelter made by trees overlapping, understory layer where the trunks and ferns etc are and the floor where more plants, ferns, baby trees and leaves are, the leaves get so thick that they become a carpet.
How are the outer core and the inner core different?
The inner core - the centre of earth - is solid and about 780 miles (1,250 km) thick. The inner core may have a temperature up to about 13,000°F (7,200°C = 7,500 K), which is hotter than the surface of the Sun. The inner core (which has a radius of about 750 miles (1,228 km) is solid. The outer core is so hot that the metal is always molten. The outer core is about 1370 miles (2,200 km) thick. Because the earth rotates, the outer core spins around the inner core and that causes the earth's magnetism. The outer core is in a liquid state and is about 1,400 miles (2,260 km) thick.
Does onions have photosynthesis?
Onion also a plant. So it is photosynthetic. But onion bulb is not.
What is the meaning of onion seed in Telugu?
onion - ulli seed - vittanam So, onion seed means ulli vittanam
Why can't we see chloroplasts in an onion cell?
You can't see chloroplasts in an onion skin cell since the onion was underground. When the onion is underground, the sun can't reach the onion so the onion skin cells can't make glucose. The onion does have chloroplasts in its cells at the top of the onion. That's where he sunlight can reach the onion.
Onion cell function?
the function of the onion cell dictates that they protect the onion from radiation so if you wear onion skin on your face when you go in to a radiation chamber you will be safe.
What are the similarities of the inner and outer core?
the outer core is a molten metal that surrounds the inner core. In spite of enormous pressure, the outer core behaves like a thick liquid. The inner core is a dense ball ofsolid metal. In the inner core,extreme pressire squeezes the atoms of iron and nickel so much that they cannot spread out and become liquid.
What part of the plant is an onion bulb?
The bulb.... an onion bulb is the seed that you plant to grown an onion. So, the part of the plant is a bulb.
Why does an onion not have a cytoplasm?
All cells have cytoplasm, so yes, onion cells do have cytoplasm.
Does onion have a cytoplasm?
All cells have cytoplasm, so yes, onion cells have cytoplasm.
Why is an onion considered a root?
It is not! An onion is a bulb. A swede, turnip, carrot, and so on, are root.
