Class 10 Science - TELANGANA
Nutrition
The chapter Nutrition in Class 10 Science under the Telangana Board (TSBSE) explores how living organisms obtain and utilize food for energy, growth, and maintenance. Students will dive deep into autotrophic nutrition, specifically photosynthesis, and heterotrophic nutrition, focusing on the human digestive system. You will learn about experiments proving the necessity of light, carbon dioxide, and chlorophyll for making food. Understanding this chapter is crucial for board exams as it features frequently in both conceptual questions and diagram-based evaluations like the human alimentary canal and internal structure of the leaf.
Start Learning FreeKey Concepts
Autotrophic Nutrition
A process where organisms like green plants synthesize their own organic food from simple inorganic substances like carbon dioxide and water in the presence of sunlight.
Photosynthesis
The biochemical pathway in chloroplasts where solar energy is converted into chemical energy, splitting water molecules and producing glucose and oxygen.
Heterotrophic Nutrition
A mode of nutrition where organisms cannot make their own food and depend directly or indirectly on plants and other organisms for sustenance.
Holozoic Nutrition
A type of heterotrophic nutrition seen in humans and amoeba, involving ingestion, digestion, absorption, assimilation, and egestion.
Peristalsis
Wave-like muscular contractions and relaxations of the alimentary canal that push food forward through the digestive tract.
Important Formulas
Board Exam Info
In the Telangana (TSBSE) Class 10 General Science (Biology) paper, the 'Nutrition' chapter typically carries around 6 to 8 marks. Questions frequently include 4-mark descriptive answers such as explaining human digestion or photosynthesis experiments, alongside 1 or 2-mark short questions and multiple-choice questions.
Frequently Asked Questions
Why is water written on both sides of the photosynthesis equation?
Water molecules are consumed as reactants during the light-dependent reactions to release oxygen, but water is also produced as a by-product during the synthesis of glucose.
What is the role of HCl in the human stomach?
Hydrochloric acid creates an acidic medium for the activation of the enzyme pepsin and kills harmful bacteria ingested along with food.
How do stomata open and close?
Stomata open and close due to a change in the turgor pressure of guard cells. When water flows into guard cells, they swell and open the pore; when they lose water, they shrink and close it.
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