Germination VS Plant Growth
27 September 2020 Makassar, Makassar City, South Sulawesi, Indonesia
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The process of germination and plant growth |
Have you ever wondered what do plants need to grow or maybe what process should the plant go through before it grows. Well, it all begins from seeds.
Many plants reproduce from seeds. The development of seeds into a young plant is called germination. Seed germination will only take place when conditions are right. In this case, the seed requires a sufficient amount of water, warmth and air to start to develop.
Six stages of germination:
- Once the seed gets enough water, it will absorb the water then swell, causing its coat breaks out.
- Then the first root will grow downwards through the broken coat.
- The stem grows upwards.
- More roots grow downwards.
- The stem grows taller and the shoot appears above the ground.
- Finally, it becomes a seedling where its leave can do photosynthesis (to produce food).
From the six stages of germination above, you can understand clearly that during the process of germination, the presence of light is not required for the seed to start growing. This is because the seed does not have any leaves yet to produce its food (photosynthesis). So where does the energy come from?
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Parts of a seed |
Well, there are three main parts in a seed. The baby plant or embryo that can germinate into seedling when conditions are right. The seed leaves that store food, this is where the seed gets its energy from during the process of germination. Also, the seed coat that protects the seed.
So, the seed does not need light to germinate as it has stored food in its seed leaves to supply energy during the process of germination”
Read Also : The life process
You can prove this theory by experimenting. To ensure the test is fair, you have to be certain that you only change one variable that you investigate and keep other variables the same. You may watch the following video to help you.
To find out whether your experiment result is reliable. You can repeat your experiment. If you obtain similar or slightly different results, meaning its reliable. However, if you obtain very different results, meaning its unreliable.
Hint :
- Variable is a factor or a condition in an experiment.
- Variable to change is a variable to investigate in an experiment.
- Variables to keep the same are the variables to ensure the test is fair.
- Reliable result means can be generalised.
By the time the seeds have developed into seedlings or young plants, the stored food as the source of its energy has been used up. In this regard, the young plants must be able to produce its food. The process of food making in plants is called photosynthesis which involves the presence of light, enough amount of water, warmth and air. This explains to us that plants can only grow healthy when those four-mentioned factors are fulfilled.
Similar to germination, you also can prove either light is needed for the plant to grow or not. Simply take two identical seedlings, give them the same amount of water, then place one of them in a warm dark room and the other one in a warm bright room. You can observe daily how both plants grow. After 10 days, you will notice that the seedling from the dark-room is dying as it does not get enough sunlight while the plant in the bright room will grow healthy as all four factors are obtained.
In the process of experiment, you can use some apparatus such as :
- Ruler to measure the length/height of the plant in the unit cm.
- Measuring cylinder to measure the volume of water in the uni ml/cm3 (read: centimetre cubic)
- Thermometer to measure the temperature of the surrounding in the unit ℃
- Table to record your experiment result. Also, the bar chart/line graph to plot your data.
In short, germination can take place without light while plant growth cannot.
Seeds need enough water, warmth and air to germinate. While, plants need enough light, water, warmth and air to grow”
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Factors needed for Germination VS Plant growth
So that’s about germination and plant growth. Now, let's try this!
lily wants to find out whether a plant can grow in artificial light instead of sunlight.
- Write down the aim of her investigation
- The materials she will need
- The variables she will change and keep the same
Write your complete answers in the comment box below! Be sure to use your name before submitting it!
Your loyal Cap. Idaa
Adios Amigos
Learn other science topics here:
BIOLOGY
9 September 2020 Makassar, Makassar City, South Sulawesi, Indonesia
Hi kids, congratulations you made it to the end of biology chapter in this semester. As you notice that this chapter focuses on living things, how they adapt, how they eat, how they reproduce and even how they connect each other (between plants, animals and human beings). Plenty of topics have been explained to you in biology chapter started from life processes until how human can stay healthy. So, in this article I am going to highlight what have you learnt about biology.
Begins with life processes, a process that keeps living things (animals, plants and human beings) alive, that include nutrition, movement, growth, reproduction, respiration, sensitivity and excretion. As living things grow, their sensitivity makes them aware of their surroundings because of their senses. There are five senses attached on them - sight, hearing, smell, taste and touch which are all detected through different sense organs such as eyes, ears, nose, tongue and skin.
Living things can be sorted based on their distinctive features, helping them adapt well in their habitat (a place where plants and animals live). The organisms that live in a habitat are adapted to live in the habitat. Owing to this fact, scientists can easily classify them by looking at how they are similar to and different from each other. The sorting of living things into groups is called classification.
Plants, on the other hand, have four main parts such as roots, stem, leaves and flowers. It starts its life cycle from germination when conditions are right which means the seed can only germinate when it gets enough water, warmth and air. Once it becomes seedlings, a sufficient amount of water, light, warmth and air, is required for them to grow healthy. A fully-grown plant will produce flowers that contain the reproductive organs of the plant (both female and male) which make and receive pollen.
The male parts, known as stamen, consist of the anther, which produces pollen, and filament, which is a stalk that supports the anther. Meanwhile, female parts (known as pistil or carpel) consist of stigma, style and ovary, which contains ovule.
The transferring of pollen from the anther to the stigma is called pollination (can either be done by wind or insects). Each pollen grain then grows a tube down to the ovule in a process known as fertilisation, resulting in the ovary becomes a fruit and the ovule becomes seed (seed production). Finally, the grown-fruit disperse its seeds by animals, water, wind or explosion (seed dispersal) - and the cycle starts again.
However, in what ways the plants help the animals?🤔
Well, it's simple, the animals cannot make their food so must obtain it from plants or other animals - this is what we called a food chain. So, the plants provide food for the animals and when animals die, they will become decomposer which provides minerals for the plants. wow, amazing right?
Nevertheless, this chain does not go as it supposed to be due to the careless of human activities such as cutting down trees to build up power station that causes organisms lost their habitats and pollute the atmosphere with greenhouse gases, even worst resulting some species go extinct. For these reasons, the human must apply 3R’s (recycle, reuse and reduce) to keep the life balance on Earth.
Turning to humans, complicated and complex walking creatures on Earth, depend on both plants and animals for their survival. They require a balanced diet that covers the nutrient groups (proteins, fats, carbohydrates, vitamins, minerals, fibre and water) to stay fit.
Human’s body is divided into the head, the torso (with the upper part being the thorax and the lower part being the abdomen) and the limbs, which are attached to the torso. Humans have a skeleton of bones inside their body. Those bones grow as the body grows. They support and protect parts of the body and help us move. This skeleton works along with the muscles, that work in pair - one contracts and another relaxes such as biceps and triceps in the arm and quads and hamstring in the leg. The power of the movement comes from the muscles that attached to the bones when energy is adequately fulfilled through the foods that we consume.
Taking regular exercise is vital for them to avoid fat building up the body, which can damage the heart. Exercise also makes the heart and muscles stronger and helps the joints between the bones move more easily.
So that’s the highlight of biology chapter. Shortly, all living things (plants, animals and humans) are connected to each other to continue supporting their life. I hope that it can help you understand it.
Now, let's try this!
Write your opinion about biology chapter in one or two sentences. It could be about your favourite topics, how far you could understand about it or perhaps the topics that you need more explanation about. Explain your answer in the comment box below!
Your loyal Cap. Idaa
Ciao
Learn other science topics here:
Jupiter
10 May 2020
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I am Jupiter
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For more detailed, you may watch the following video!
Neptune
3 May 2020
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I am Neptune
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Mercury
28 April 2020
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I am Mercury
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Read Also : Neptune and the Jupiter
You may watch the following video for more information:
To conclude :
- The smallest planet in the Solar System
- Mercury is made of rocky material with the solid surface without rings and moons as the satellite.
- It has the shortest orbit in the Solar System at about three Earth months or 88 days.
- Its grey similar to the Moon with rough surface caused by the asteroids hit.
- It takes 59 days to complete one rotation, resulting in the extreme changes of temperature.
- It's only protected by Exosphere, the most out layer of the atmosphere.
The Solar System
27 April 2020
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The Sun is the center of the Solar System
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Read Also : Mercury and Neptune
while the Earth rotates on its axis, it constantly revolves around the Sun
- The Sun rises at exactly the same position in the East and sets at exactly the same position in the West every day.
- The Sun moves around the Earth because it appears to move across the sky in the day.
- The Earth’s revolution around the Sun causes the cycle of day and night.
- The Sun moving around the Earth causes the cycle of day and night.
- The telescope can be used to see space objects that are far away.
- Rocket. It is used to launch artificial satellites, space probes or humans into space.
- Space probe. It can carry instruments to explore faraway places in space.
- Rover, it can be used to explore the surface of a planet.
- Space station. It provides a place or base for astronauts and scientists to live and work in space.
So that's the explanation of the solar system, I hope that it can help you understand about it.
Sounds
22 April 2020
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Kids in a choir
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Flicking a ruler
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How sounds travel in three different matters
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- Hairdryer blowing = …… dB
- Human breathing = ……..dB
- Aeroplane taking off = ……….dB
- Background music playing = ……….dB
- Siren sounding = ……….. dB
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