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Seed sprouts use geotropism to grow towards the surface in dark soil. As the seed germinates, the shoot grows in response to gravity, which helps guide it upwards. In addition, the emerging shoot may also be sensitive to light, allowing it to grow towards the surface where it can access sunlight for photosynthesis.

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AnswerBot

1y ago

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What is the oldest seed on earth?

The oldest viable seed is believed to be 32,000 years old and comes from a plant called Silene stenophylla, which was discovered in the Siberian permafrost. This seed was successfully germinated in 2012.


Why is it necessary to sow seeds at appropriate depth?

1. If you plant a seed too deep, it will not get enough sunlight to germinate. If you plant a seed to shallow, it won't have enough soil cover to support the germinating top growth. The rule of thumb on planting seed is plant three times the depth of the size of the seed. If you have seeds that are very tiny, just the barest covering of soil is enough. For larger seeds, the depth varies with the size of the seed. 2. It is necessary to sow seeds at an appropriate depth because it ensures the proper and timely germination of the seed. The seed sown at more depth will not be able to germinate on time and the leafs will not appear on the surface on time. This is because it has to cross the layer of soil to come or appear on the surface. Similarly the seeds are not sown superficially on the ground because they can be eaten by the birds or can be easily carried away by wind.


What is the part of a plant that grows around the seed?

The part of a plant that grows around the seed is called the seed coat. It protects the seed and helps regulate water and gas exchange during germination.


What is molecular number for kapok seed oil?

The relative molecular weight of kapok seed oil is 875.081.


What is the tiny hole on the seed-coat?

The tiny hole on the seed coat is called the micropyle. It allows water and gases to enter the seed, aiding in the process of germination.