Life Processes Class 10 MCQ PDF Download Term 1
Introduction
Life processes are the basic functions that are performed by living organisms to maintain their life. They include nutrition, respiration, transportation, and excretion. These processes are essential for the survival, growth, and development of living beings. In this article, we will learn about the different types of life processes, their importance, and how to practice multiple-choice questions (MCQs) on them for class 10 term 1 exam.
What are life processes?
Life processes are the physical and chemical activities that take place in living cells or organisms. They involve the intake, conversion, utilization, and removal of materials and energy. Some examples of life processes are photosynthesis, digestion, breathing, circulation, and excretion.
life processes class 10 mcq pdf download term 1
Why are life processes important for living organisms?
Life processes are important for living organisms because they enable them to:
Maintain their internal environment or homeostasis
Obtain and use energy for various activities
Grow and repair damaged tissues
Respond to stimuli or changes in the environment
Reproduce and pass on their genetic information
Types of life processes
The four main types of life processes are nutrition, respiration, transportation, and excretion. Let us understand each of them in detail.
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Nutrition
Nutrition is the process of obtaining and using food by living organisms. It involves two steps:
Ingestion - taking in food from the environment
Digestion - breaking down food into simpler substances that can be absorbed by the cells
Nutrition can be classified into two types based on the source of food:
Autotrophic nutrition
Autotrophic nutrition is the process of making food by using light or chemical energy. Autotrophs are organisms that can synthesize their own food from simple inorganic substances like carbon dioxide and water. Examples of autotrophs are green plants, algae, and some bacteria. They perform photosynthesis or chemosynthesis to produce organic compounds like glucose.
Heterotrophic nutrition
Heterotrophic nutrition is the process of obtaining food from other organisms or organic sources. Heterotrophs are organisms that cannot make their own food and depend on other living or dead matter for nourishment. Examples of heterotrophs are animals, fungi, and most bacteria. They perform different modes of feeding like holozoic, saprophytic, parasitic, or symbiotic.
Respiration
Respiration is the process of releasing energy from food by breaking it down into simpler substances. It involves two steps:
Oxidation - combining the broken down substances with oxygen to release energy, carbon dioxide, and water
Respiration can be classified into two types based on the presence or absence of oxygen:
Aerobic respiration
Aerobic respiration is the process of releasing energy from food by using oxygen. It is the most efficient and common mode of respiration in most living organisms. It takes place in the mitochondria of the cells and produces a large amount of energy (36 ATP molecules) per glucose molecule. The equation for aerobic respiration is:
C6H12O6 + 6O2 6CO2 + 6H2O + Energy
Anaerobic respiration
Anaerobic respiration is the process of releasing energy from food without using oxygen. It is a less efficient and rare mode of respiration in some living organisms. It takes place in the cytoplasm of the cells and produces a small amount of energy (2 ATP molecules) per glucose molecule. The end products of anaerobic respiration vary depending on the type of organism. For example, in yeast and some bacteria, anaerobic respiration produces ethanol and carbon dioxide. In some animal cells, anaerobic respiration produces lactic acid. The equations for anaerobic respiration are:
In yeast and some bacteria:
C6H12O6 2C2H5OH + 2CO2 + Energy
In some animal cells:
C6H12O6 2C3H6O3 + Energy
Transportation
Transportation is the process of moving substances from one part of the body to another or from one cell to another. It involves two components:
Circulatory system - a network of vessels that carry blood or sap throughout the body or plant
Lymphatic system - a network of vessels that collect excess fluid from the tissues and return it to the blood stream
Transportation can be classified into two types based on the type of organism:
Transportation in animals
Transportation in animals is the process of moving substances like oxygen, carbon dioxide, nutrients, hormones, and wastes through blood. Blood is a fluid connective tissue that consists of plasma (liquid part) and blood cells (solid part). Blood cells include red blood cells (carry oxygen), white blood cells (fight infections), and platelets (help in clotting). Blood is pumped by the heart through arteries, veins, and capillaries. The heart has four chambers: two atria and two ventricles. The circulation of blood can be divided into two types: systemic circulation (between heart and body) and pulmonary circulation (between heart and lungs).
Transportation in plants
Transportation in plants is the process of moving substances like water, minerals, food, and hormones through sap. Sap is a watery solution that flows in specialized tubes called xylem and phloem. Xylem transports water and minerals from the roots to the leaves. Phloem transports food and hormones from the leaves to other parts of the plant. The movement of sap is driven by osmosis, transpiration, root pressure, and capillary action.
Excretion
Excretion is the process of removing waste products from the body or cells. It helps in maintaining homeostasis, regulating pH, and preventing toxicity. The waste products may be solid, liquid, or gaseous. Some examples of waste products are carbon dioxide, urea, ammonia, salts, and water.
Excretion can be classified into two types based on the type of organism:
Excretion in humans
Excretion in humans is the process of removing waste products from the body through various organs. The main organs involved in excretion are:
Kidneys - filter blood and produce urine (a liquid waste containing urea, salts, and water)
Lungs - exhale carbon dioxide and water vapor (gaseous wastes) during breathing
Skin - secrete sweat (a liquid waste containing salts and water) through sweat glands
Liver - convert ammonia (a toxic waste) into urea (a less toxic waste) and bile (a digestive juice)
Large intestine - eliminate feces (a solid waste containing undigested food, bacteria, and mucus) through anus
Excretion in plants
Excretion in plants is the process of removing waste products from the cells through various ways. The main ways of excretion in plants are:
Transpiration - lose water vapor (a liquid waste) through stomata (tiny pores) on the leaves
Respiration - release carbon dioxide and water vapor (gaseous wastes) during cellular respiration
Guttation - secrete water droplets (a liquid waste) through hydathodes (special openings) on the leaf margins
Secretion - produce substances like gums, resins, latex, etc. (solid or liquid wastes) that are stored or released from the plant body
Benefits of practicing MCQs on life processes class 10
Practicing MCQs on life processes class 10 is a smart way to prepare for the term 1 exam. It has many benefits such as:
Enhance conceptual understanding
MCQs on life processes class 10 test your knowledge of the concepts, definitions, examples, and applications of the topic. They help you to revise and reinforce the key points and clear any doubts or misconceptions. They also help you to identify your strengths and weaknesses and focus on the areas that need improvement.
Improve problem-solving skills
MCQs on life processes class 10 challenge your thinking and reasoning skills. They require you to analyze, compare, contrast, infer, and evaluate the given options and choose the correct answer. They also help you to develop speed and accuracy in solving questions and managing time effectively.
Boost confidence and accuracy
MCQs on life processes class 10 provide you with instant feedback and explanation for each question. They help you to check your performance and progress and measure your level of preparation. They also help you to gain confidence and accuracy in answering questions and avoid silly mistakes.
Sources of MCQs on life processes class 10
There are many sources of MCQs on life processes class 10 that you can use for practice. Some of them are:
CBSE Class 10 Science MCQs Chapter 6 Life Processes - BYJU'S
This is a reliable source of MCQs on life processes class 10 that covers all the topics and subtopics of the chapter. It has a total of 25 questions with four options each and one correct answer. It also provides detailed solutions and explanations for each question. You can download the PDF file of this source from [here].
Class 10 Term-I Science MCQs Practise : ALLEN; KVS : Free Download, Borrow, and Streaming : Internet Archive
This is another source of MCQs on life processes class 10 that is based on the latest CBSE syllabus and exam pattern. It has a total of 20 questions with four options each and one correct answer. It also provides hints and solutions for each question. You can download the PDF file of this source from [here].
MCQ Questions for Class 10 Science Life Process with Answers
This is yet another source of MCQs on life processes class 10 that is designed by experts and follows the NCERT guidelines. It has a total of 15 questions with four options each and one correct answer. It also provides answers and explanations for each question. You can download the PDF file of this source from [here].
Conclusion
confidence and accuracy in the term 1 exam. There are many sources of MCQs on life processes class 10 that you can download and practice from. We hope this article has helped you to understand the topic better and prepare well for your exam. All the best!
FAQs
Here are some frequently asked questions on life processes class 10:
What is the difference between ingestion and digestion?
What are the two types of autotrophic nutrition?
What is the difference between aerobic and anaerobic respiration?
What are the two types of transportation in plants?
What are the main organs involved in excretion in humans?
Answers:
Ingestion is the process of taking in food from the environment, while digestion is the process of breaking down food into simpler substances that can be absorbed by the cells.
The two types of autotrophic nutrition are photosynthesis and chemosynthesis. Photosynthesis is the process of making food by using light energy, while chemosynthesis is the process of making food by using chemical energy.
Aerobic respiration is the process of releasing energy from food by using oxygen, while anaerobic respiration is the process of releasing energy from food without using oxygen.
The two types of transportation in plants are xylem and phloem. Xylem transports water and minerals from the roots to the leaves, while phloem transports food and hormones from the leaves to other parts of the plant.
The main organs involved in excretion in humans are kidneys, lungs, skin, liver, and large intestine. Kidneys produce urine, lungs exhale carbon dioxide and water vapor, skin secretes sweat, liver converts ammonia into urea and bile, and large intestine eliminates feces.
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