Astronauts traveling to Mars will need to grow some of their own food in order to survive and stay healthy. But on Mars will there be enough light to meet the needs of growing plants?
Air is made up of nitrogen (78%) and oxygen (21%) with small amounts of other gases such as argon and carbon dioxide. It probably then comes as no surprise that nitrogen is important for all organisms as it helps them to live and grow.
Most people do not think twice about soil, but we could not live without it. The plants we eat, and the plants that feed the animals we eat, depend on soil. Plant roots need soil for physical support. Plants also get nutrients from soil, which they need for healthy growth and development. Future astronauts on a long-term mission to Mars will want to grow some food crops to add to their diet of packaged food.
Without leaves, there would not be life on Earth. Leaf size can vary from the tiniest leaf of the common water fern (Azolla filiculoides) that are just one mm in length, to the largest leaves of the raffia palm (Raphia regalis) measuring 25 meters in length. No matter the size, most leaves are adapted for photosynthesis. This is a very important process where plants convert light energy into sugars and oxygen.
One of the major differences between plants and animals is that plants cannot move from place to place to get away from an unfavourable environment or situation. But this does not mean that plants do not move at all. A tropism is plant movement in response to an external stimulus in the environment.
If you and your students wish to extend the Tomatosphere™ program to include additional plant-based inquiries or if you plan to grow the tomato plants until they produce fruit, follow these transplanting and growing recommendations.
Tomato plants belong to the plant group known as flowering plants or angiosperms. Flowers are important for reproduction and the production of seeds.
Because the ISS is dependent on Earth for its full life support needs, it is an open system. Scientists are working on creating a closed system using machinery and programs to recycle and reuse matter to maintain a supply of air, water, and food independent from Earth.
Eating is one of life’s great pleasures, even when orbiting 400 kilometres above the surface of the Earth. Learn how NASA is feeding today’s astronauts on the International Space Station (ISS) and see how they plan to feed tomorrow’s astronauts on a mission to Mars.
Earth is the third planet from the Sun, and Mars, the fourth planet from the Sun, is our closest planetary neighbour.
Tomato, along with pepper, potato, and eggplant, belong to the Solanaceae family of flowering plants.
Photosynthetic organisms are the primary source for all of the biotic energy requirements of an ecosystem.
Have you ever wondered where the wonderful colours of plants come from? Pigments are behind the many colours we see in plants.
Mars is visible in the night sky without the help of a telescope, so it has fascinated people for thousands of years. The next big step is a human mission to Mars.
Every tomato seed contains a tiny tomato plant that is alive but dormant. This means that it is not growing, it is just waiting.