1. Why do organisms need to take food?
2. Distinguish between a parasite and a saprotroph.
3. How would you test the presence of starch in leaves?
4. Give a brief description of the process of synthesis of food in green plants.
5. Show with the help of a sketch that the plants are the ultimate source
of food.
Answers
Answer: Hope this helps!! :)
1. Organisms need to take food to get energy as well to perfrom life process.
2. Parasite are those that depend on other organisms(host) for food and then in return cause harmful effects. One good example is that of the mosquitoes . Saprotrop is those organisms that obtain their food from dead or decaying matter. One good example is that of the Fungi.
3. You use Iodine to test the presence of starch in leaves. Here's the process. So first you heat a plant leaf in boiling water for 30 seconds. After that heat it in boiling ethanol for a few minutes and this ethanol will remove the color of the leaf. After that wash the leaf and keep it in a white tile. And then add iodine solution from a dropping pipette. You will notice that after some time there will be a color change to blue - black.
4. The process by which plants make food is photosynthesis. Photosynthesis is the method in which green plants use sunlight(photons) to make their own food. Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas.5.
5. Here's the sketch
Hope you like the answer and please mark me Brainliest. Have a good day.
Explanation:
Answer:
All living organisms require food to survive. It gives them energy to perform various activities. All activities such as playing, running, walking, studying, etc. require energy. The various components present in our food such as carbohydrates, proteins, fats, vitamins, and minerals provide energy to our body. These are also important for growth and development of the body.