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Q.3. A Answer the following questions in one sentence.
1. Why do living organisms need nutrition?
2. What is the male reproductive of a flower called?
3. Who have invented binomial nomenclature?
4. What will happen if only one crop is grown continuously in the soil?
5. Name some unicellular organisms in which all life processes take place within their
body itself?
B. Answer the following questions in your own words.
V. Explain various steps of nutrition in animals.
2. What is the need and importance of soil testing from the point of view of farmers
13. Explain the process of production of food in plants.
Answers
Answer:
1. Nutrients help break down food to give organisms energy. They are used in every process of an organism's body. Some of the processes are growth , repair, and maintaining life.
2. stamen is the male reproductive part of a flower.
3. Carolus Linnaeus invented binominal nomenclature.
4. If only one crop is grown repeatedly in the soil, it loses its fertility and gets devoid of nutrients. For this reason crop rotation is an important procedure, so that the fertility of the soil is retained and there is no loss of nutrients.
5. The unicellular organisms in which all life processes take place within their body are- Amoeba, Paramoecium and Euglena.
B) V. There are five steps in the process of Nutrition in animals. These are: Ingestion, Digestion, Absorption, Assimilation and Egestion.
2. Soil testing analyses is important for farmers to better understand their soil types and deficient of nutrients and it help to minimise the quantity and different types of fertilisers, it become cost benefit to peasants.
13. Photosynthesis is the process by which plants make food from light, water, nutrients, and carbon dioxide. Chlorophyll is the green pigment, or color, found in plants that helps the plant make food.