Question

You are running an experiment to study seed germination and accidentally left a dish of seeds covered with a little water in a totally dark room. When you return a few days later, you notice that the seeds have sprouted long roots and long shoots. What was the source of most of the matter that makes up these roots and shoots?A. oxygen in the airB. carbon dioxide in the airC. water in the dishD. glucose in the seed

Answer 1

D. glucose in the seed

Step-by-step explanation:

Plants generally make their food through the process of photosynthesis in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and carbohydrate.

But due to the absence of sunlight, plant will be unable to use carbon dioxide and water for photosynthesis and oxygen is a by-product.

So the reason of seed germination is the presence of glucose in the seed. Seeds generally germinate through the process of inhibition, that require uptake of water. Glucose works as energy source in humans and plants as well. sugar or glucose allow the seed to utilize the water and help foster its growth.

Hence, the correct option is D. glucose in the seed.