III. Short answer type questions.
1. State any four characteristics of living things.
2. Define respiration. Why is it important?
3. What are autotrophs? How are they different from heterotrophs?
4. Define decomposers.
5. What is a biotic community?
Answers
Answer:
Q1. Ans) Living things are made of cells. Cells are the basic building blocks of living things.
Living things have movement. This movement can be quick or very slow.
All living things have a metabolism.
Living things grow.
Response to environment.
Reproduction.
Q2. Ans) Respiration is the process of releasing energy from food and this takes place inside the cells of the body. Respiration is essential for life because it provides energy for carrying out all the life processes which are necessary to keep the organisms alive.
Q3. Ans) Autotrophs are known as producers because they are able to make their own food from raw materials and energy. Examples include plants, algae, and some types of bacteria. Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs.
Q4. Ans) An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Q5. Ans) Biotic communities are regional plant formations characterized by particular species of plants and animals. Using previous works and modifying the existing terminology of biologists, ecologists, and biogeographers, these biotic communities have been incorporated in an hierarchical classification system