Q1۔ Define nutrition. Explain the types of nutrition. Also explain the process by which plants perform
their nutrition. What are the factors affecting that process? Describe the role of leaves in the
process.
Q2۔ Define Digestion. Describe the human digestive system. Give the role of all the glands that help in
digestion. Draw a labelled diagram of alimentary Canal in humans.
Q3۔ Describe the process of obtaining wool fibre from sheared wool. Explain all the steps involved in
the process. Name the features that determine the quality of wool.
Q4۔ What is transfer of heat? What are different ways of heat transfer? Explain all the types. What are
the conditions on which heat conduction depends?
Q5۔ Define physical change. How is it different from a chemical change? Is corrosion of iron a chemical
or physical change? What happens in corrosion of iron? Write the conditions necessary for
corrosion. What are the methods used to prevent corrosion?
Answers
Answer:
Nutrition is defined as the process of taking food to carry out different functions of the body needed for the survival of the organisms. The two main type of nutrition is autotrophic and heterotrophic. ... Heterotrophic nutrition is divided into saprophytic nutrition, parasitic nutrition and holozoic nutrition
Answer:
1.Nutrition is the biochemical and physiological process by which an organism uses food to support its life. It includes ingestion, absorption, assimilation, biosynthesis, catabolism and excretion. The science that studies the physiological process of nutrition is called nutritional science
The two main type of nutrition is autotrophic and heterotrophic. Heterotrophic nutrition is a type of nutrition in which an organism is dependent on other organisms for food. Heterotrophic nutrition is divided into saprophytic nutrition, parasitic nutrition and holozoic nutrition.
The process by which green plants make their own food from carbon dioxide and water by using sunlight energy in the presence of chlorophyll is called photosynthesis. Green plants also need food to acquire energy. All living organisms need energy to perform various life processes.
The manufacturing process is a complex one that can be impacted by many factors: supplies, equipment, factory overhead, the need for special parts, and the people who work at all points in the process. The more variables there are, the greater the possibility of disruption to the smooth operations of a factory.
The main function of a leaf is to produce food for the plant by photosynthesis. ... Oxygen is passed into the atmosphere through stomata—pores in the leaf surface. photosynthesis. Green plants such as trees use carbon dioxide, sunlight, and water to create sugars.
Explanation: