Class 10 Science Chapter 6 Digestion Quiz & Flashcards

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are the four life processes that must go together for the maintenance of life in living organisms?

Respiration, Nutrition, Excretion, and Transportation

What is the process of nutrition involved in?

The intake of nutrients, utilization of proteins, carbohydrates, fats, vitamins, and minerals, and absorption of water

What is the significance of nutrition in living organisms?

It provides energy and building blocks for growth and maintenance of living organisms

What are the nutrients involved in the process of nutrition?

Carbohydrates, proteins, fats, vitamins, and minerals Signup and view all the answers

What is the role of an organism in the process of nutrition?

An organism prepares its own food and utilizes nutrients for growth and maintenance Signup and view all the answers

Why is nutrition an essential process for living organisms?

It provides energy and building blocks for growth and maintenance of living organisms Signup and view all the answers

What is the process called when an organism takes in food?

Ingestion Signup and view all the answers

What is the process by which water is absorbed by the roots of plants from the soil?

osmosis Signup and view all the answers

What is the function of pseudopodia in Amoeba?

To ingest food and form a food vacuole Signup and view all the answers

Where does photosynthesis take place in a plant cell?

chloroplasts Signup and view all the answers

What happens to the undigested food in Amoeba?

It is thrown out of the cell membrane Signup and view all the answers

What is the role of stomata in photosynthesis?

exchange of gases (CO2 and O2) and water vapor Signup and view all the answers

Where does the process of assimilation take place?

into the blood stream Signup and view all the answers

What is the process called when food is broken down into simple molecules?

Digestion Signup and view all the answers

What is the sequence of events in obtaining nutrition in organisms?

Ingestion → Digestion → Absorption → Assimilation → Egestion Signup and view all the answers

What is the role of enzymes in Amoeba?

To break down food into simple molecules Signup and view all the answers

How do autotrophs obtain their nutrition?

directly from the environment through photosynthesis Signup and view all the answers

What type of movement helps in the mixing of food in the stomach?

peristaltic movement Signup and view all the answers

What is the main function of the xylem vessels in plants?

transportation of water and minerals from the roots to the leaves Signup and view all the answers

What is the purpose of assimilation in Amoeba?

To obtain energy and materials for growth and repair Signup and view all the answers

What is the function of pepsin in the stomach?

breaks proteins into simpler substances Signup and view all the answers

What is the function of gastric glands in the stomach?

to produce pepsinogen and HCl Signup and view all the answers

What is the process called when undigested food is removed from the body?

Egestion (Excretion) Signup and view all the answers

What is the enzyme called that breaks down starch into maltose?

amylase Signup and view all the answers

What is the function of HCl in the stomach?

to create an acidic environment for the activation of gastric enzymes, such as pepsin, to break down proteins Signup and view all the answers

What is the role of bile juice in the digestion of fats?

to emulsify fats, breaking them down into smaller particles, making it easier for lipase to digest them Signup and view all the answers

What is the site of protein digestion?

in the small intestine, where trypsin and other proteases break down proteins into amino acids Signup and view all the answers

What is the function of villi in the small intestine?

to increase the surface area for absorption of nutrients into the bloodstream Signup and view all the answers

What is the role of pancreatic juice in the digestion of carbohydrates?

pancreatic juice contains enzymes such as amylase that break down carbohydrates into simple sugars Signup and view all the answers

What is the final product of carbohydrate digestion in the small intestine?

glucose Signup and view all the answers

Study Notes

Nutrition

Nutrition is the process by which an organism prepares its own food and nutrients.
It involves the intake of food, digestion, absorption, and utilization of nutrients.
Nutrients include carbohydrates, proteins, fats, vitamins, and minerals.

Nutrition in Amoeba

Amoeba ingests food particles using its pseudopodia.
The food enters the food vacuole, where it is broken down by enzymes.
The simple molecules are then absorbed into the cytoplasm through diffusion.
The absorbed nutrients are utilized for energy, growth, and repair.
Undigested food is removed from the cell through egestion.

Nutrition in Humans

Nutrition involves the processes of ingestion, digestion, absorption, and assimilation.
Ingestion occurs in the mouth, where food is broken down into smaller molecules.
Digestion occurs in the stomach and small intestine, where enzymes break down food into absorbable molecules.
Absorption occurs in the small intestine, where nutrients are absorbed into the bloodstream.
Assimilation occurs in the cells, where absorbed nutrients are utilized for energy, growth, and repair.

Digestion

Digestion is the process of breaking down complex molecules into simpler molecules.
It involves the action of enzymes, which break down carbohydrates, proteins, and fats.
Digestion occurs in the mouth, stomach, and small intestine.

Mouth

Digestion begins in the mouth, where food is broken down into smaller molecules.
Saliva contains an enzyme called amylase, which breaks down starch into sugars.
Teeth help in chewing and grinding food.

Stomach

The stomach is a muscular sac that secretes digestive juices.
Gastric glands in the stomach wall produce pepsinogen, which is converted into pepsin in the presence of HCl.
Pepsin breaks down proteins into peptides.
Mucus in the stomach lining protects the stomach from the acidic digestive juices.

Small Intestine

The small intestine is the longest part of the alimentary canal.
It is the site of complete digestion and absorption of nutrients.
Pancreatic juice and bile juice are secreted into the small intestine to aid in digestion.
The walls of the small intestine are lined with finger-like projections called villi, which increase the surface area for absorption.
Nutrients are absorbed into the bloodstream and transported to the liver for further processing.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Review notes and practice questions for Class 10 Science Chapter 6: Nutrition & Digestion, covering key concepts and past year questions. Suitable for students preparing for Class 10 exams.

Class 10 Science Chapter 6: Nutrition & Digestion

Choose a study mode