e) Water Q4. Answer the following questions: 1. Why do some trees lose their leaves in winter? 2. Where do mushrooms and moulds live? 3. Why do some plants eat insects? 4. Why are leaves green in colour? 5. Why is sunlight so important for a plant to make its food? 6. How is the food prepared by plants used?
Answers
Answer:
1) The main reason for leaf drop on most trees is that, come winter, it gets pretty cold and dry in our part of the world. Rather than expend energy to protect these fragile organs, trees shed leaves to conserve resources
2) Fungi, and by extension, mushrooms, belong to a group of mold known as saprophytes. Saprophytes live on decaying wood or plant matter, breaking their host down until only minerals and carbon dioxide remains.
3) Most plants absorb nutrients through their roots from nutrient-rich soil. Since carnivorous plants grow in nutrient-poor areas they eat insects to get the nutrients they need
4) Chlorophyll's job in a plant is to absorb light—usually sunlight. ... The process of photosynthesis produces oxygen, which is released by the plant into the air. Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light.
5) Sunlight has a very important job in photosynthesis. ... The energy captured by chlorophyll can be used in photosynthesis to make sugar. When a plant gets limited sunlight, photosynthesis slows down. This also means that the plant might not be getting enough sugar—its energy source.
6) Their roots take up water and minerals from the ground and their leaves absorb a gas called carbon dioxide (CO2) from the air. They convert these ingredients into food by using energy from sunlight. This process is called photosynthesis, which means 'making out of light'. The foods are called glucose and starch.
Answer:
1. The main reason for leaf drop on most trees is that, come winter, it gets pretty cold and dry in our part of the world. Rather than expend energy to protect these fragile organs, trees shed leaves to conserve resources.
2.. Fungi, and by extension, mushrooms, belong to a group of mold known as saprophytes. Saprophytes live on decaying wood or plant matter, breaking their host down until only minerals and carbon dioxide remains.
3.. Why do carnivorous plants eat insects? ... Most plants absorb nutrients through their roots from nutrient-rich soil. Since carnivorous plants grow in nutrient-poor areas they eat insects to get the nutrients they need.
4.. This food-making process takes place in the leaf in numerous cells containing chlorophyll, which gives the leaf its green color. This extraordinary chemical absorbs from sunlight the energy that is used in transforming carbon dioxide and water to carbohydrates, such as sugars and starch
5.. Sunlight has a very important job in photosynthesis. ... The energy captured by chlorophyll can be used in photosynthesis to make sugar. When a plant gets limited sunlight, photosynthesis slows down. This also means that the plant might not be getting enough sugar—its energy source.
6.. Their roots take up water and minerals from the ground and their leaves absorb a gas called carbon dioxide (CO2) from the air. They convert these ingredients into food by using energy from sunlight. This process is called photosynthesis, which means 'making out of light'. The foods are called glucose and starch