PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When the embryo breaks out of the seed coat
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When the radicle breaks through the seed coat
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When sugars move to the embryo
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When photosynthesis begins
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Detailed explanation-1: -A seedling is a young plant or sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed.
Detailed explanation-2: -Once the shoot, with its one or two seed leaves, emerges from the soil or growing media, we call the plant a seedling.
Detailed explanation-3: -The photosynthetic phase of the embryo starts early upon embryogenesis, at the globular stage, when plastids differentiate into mature chloroplasts and chlorophyll accumulates (Tejos et al., 2010).
Detailed explanation-4: -Summary: When a seed germinates, it only has two days to turn into a seedling capable of photosynthesis, before having exhausted its reserves. In a new study, researchers reveal the underlying mechanism of this process.
Detailed explanation-5: -Your grow lights should be turned on (or your seedlings should be put under lights) as soon as the first seed starts to sprout. Many types of seedlings grow very fast, and they will begin reaching for the light as soon as they emerge. So give them plenty of it right from the start.