2007-03-27 23:50:42 · 9 answers · asked by jasminecwx 1 in Science & Mathematics ➔ Botany
The sun.
2007-03-27 23:58:33 · answer #1 · answered by Dreamcatcher 4 · 0⤊ 1⤋
Firstly, from the endosperm contained within the seed - this may be stored separately to the cotyledon as in a corn kernel, or in the cotyledons as in a peanut.
Secondly, once the cotyledon(s) break the surface, they add energy to the seedling by photosynthesis.
Thirdly, the true leaves take over from the cotyledon(s) and continue to photosynthesise.
2007-03-28 10:41:31 · answer #2 · answered by SteveK 5 · 0⤊ 0⤋
In many seeds the initial energy source for a seedling is included in the seed and is called the endosperm.
2007-03-28 07:03:16 · answer #3 · answered by Anonymous · 1⤊ 0⤋
the seed depends on it's own package of nutrients for non photosynthetic growth,water absorbed when a seed is sown triggers enzymes to break down stored nutrition like protein,starches & oil,these help the seedling along ,when it reaches above ground,the cotyledons open up,turn green & sustain the growing seedling with it's photosynthetic activity,furthur growth needs soil nitrients,warmth,sunlight & water,by this time the new leaves begin to supply nutrition.
2007-03-28 07:46:24 · answer #4 · answered by dee k 6 · 0⤊ 0⤋
From the endosperm present in the seed.
2007-03-29 20:14:39 · answer #5 · answered by moosa 5 · 0⤊ 0⤋
The seed, until the cotyledons expand and green up.
2007-03-28 07:03:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The heat in the soil to help it sprout, then the sun to make it grow.
2007-03-28 07:00:26 · answer #7 · answered by MinaF 3 · 0⤊ 1⤋
Sun and minerals
2007-03-28 07:27:17 · answer #8 · answered by abc 2 · 0⤊ 0⤋
From an expresso...
2007-03-28 06:59:59 · answer #9 · answered by LingLing 1 · 0⤊ 1⤋