8th Class Biology Question Paper 2018: Practice And Solve Today

Sample Biology Questions and Answers

What is photosynthesis?
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll. It involves taking in carbon dioxide and water, converting them into glucose (food) and oxygen.
What are the components of a plant cell?
The major components of a plant cell include the cell wall, cell membrane, cytoplasm, nucleus, mitochondria, chloroplasts, and vacuole.
What is the function of the respiratory system in humans?
The respiratory system helps in the exchange of gases. It allows oxygen to be taken in and carbon dioxide to be expelled from the body.
What is the role of red blood cells in the human body?
Red blood cells are responsible for transporting oxygen from the lungs to the tissues and carrying carbon dioxide back from the tissues to the lungs for exhalation.
What is the process of digestion in humans?
Digestion in humans begins in the mouth, where food is broken down by chewing and saliva. It continues in the stomach where stomach acids break down food further, and nutrients are absorbed in the small intestine.
Explain the function of the skeletal system in humans.
The skeletal system provides structure to the body, protects internal organs, enables movement through muscle attachment, and stores minerals such as calcium and phosphorus.
What is the importance of the circulatory system?
The circulatory system transports oxygen, nutrients, hormones, and waste products throughout the body. It plays a vital role in maintaining homeostasis and fighting infections.
What is a food chain?
A food chain is a series of organisms each dependent on the next as a source of food. It starts with producers (plants) and moves through various consumers (herbivores, carnivores).
What are the different types of muscles in the human body?
The human body has three types of muscles: skeletal muscles (responsible for voluntary movement), smooth muscles (found in organs), and cardiac muscles (found in the heart).
How does the nervous system function in humans?
The nervous system controls the body’s activities through electrical signals. It includes the brain, spinal cord, and nerves. It regulates movement, processes sensory information, and controls body functions.
What is the function of chloroplasts in plant cells?
Chloroplasts are responsible for photosynthesis in plant cells. They contain chlorophyll, a pigment that absorbs light energy for converting carbon dioxide and water into glucose and oxygen.
What is the difference between mitosis and meiosis?
Mitosis is a type of cell division that results in two identical daughter cells, while meiosis produces four genetically diverse daughter cells, important for sexual reproduction.
What are enzymes and their role in the digestive system?
Enzymes are biological catalysts that speed up the chemical reactions in the body. In digestion, they help break down food into simpler molecules that can be absorbed by the body.
What is the role of the liver in digestion?
The liver produces bile, which helps in the emulsification of fats, making them easier to digest. It also processes nutrients absorbed from the digestive tract.
How does the human excretory system work?
The excretory system removes waste products from the body through organs like the kidneys, ureters, bladder, and urethra. The kidneys filter waste from the blood to form urine.
What are the primary functions of the skin?
The skin serves as a protective barrier, regulates body temperature, allows sensory perception, and helps in the excretion of waste through sweat.
What is the process of human reproduction?
Human reproduction involves the fertilization of an egg by sperm, followed by the development of the embryo in the female reproductive system. The process includes stages like pregnancy and childbirth.
What are hormones and their function?
Hormones are chemical messengers produced by glands. They regulate various processes such as metabolism, growth, and reproduction by traveling through the bloodstream.
What is the role of the kidneys?
The kidneys filter blood to remove waste, regulate water and salt balance, and control blood pressure by excreting urine.
Explain the structure and function of the heart.
The heart is a muscular organ that pumps blood throughout the body. It has four chambers: two atria and two ventricles. It circulates oxygen-rich blood to tissues and oxygen-poor blood to the lungs.
What are the different types of plant reproduction?
Plants can reproduce sexually through flowers (involving pollination and seed formation) or asexually through processes like budding, vegetative propagation, or spore production.
What is the function of the human digestive system?
The digestive system breaks down food into nutrients, which the body absorbs and uses for energy, growth, and repair. It consists of organs like the stomach, intestines, liver, and pancreas.
What are the main parts of the human brain and their functions?
The main parts of the brain include the cerebrum (controls thought, memory, and movement), cerebellum (coordinates movement), and brainstem (controls vital functions like heart rate and breathing).
How do plants absorb water?
Plants absorb water through their roots via a process called osmosis. The water then travels through the plant’s vascular system to the leaves.
What is the difference between a unicellular and multicellular organism?
A unicellular organism consists of only one cell, while a multicellular organism is made up of multiple cells that work together to perform various functions.
What is the role of the immune system in the human body?
The immune system defends the body against harmful pathogens such as bacteria, viruses, and fungi. It includes cells, tissues, and organs that work together to detect and destroy invaders.
What is the importance of the ozone layer?
The ozone layer protects life on Earth by absorbing most of the Sun’s harmful ultraviolet radiation, which can cause skin cancer and other health problems.
What are the different phases of the menstrual cycle?
The menstrual cycle consists of four phases: the menstrual phase (shedding of the uterine lining), follicular phase (maturation of eggs), ovulation (release of an egg), and luteal phase (preparation of the uterus for pregnancy).
How do plants respond to light?
Plants respond to light through a process called phototropism. They grow towards light sources to maximize photosynthesis, which is essential for their growth and survival.
What is the role of the pancreas in digestion?
The pancreas produces digestive enzymes and insulin. The enzymes help break down food, while insulin regulates blood sugar levels.
What are the major types of ecosystems?
Ecosystems can be broadly categorized into terrestrial (e.g., forests, deserts) and aquatic ecosystems (e.g., oceans, rivers). Each type of ecosystem has unique biotic and abiotic factors.
How do birds breathe?
Birds have a highly efficient respiratory system with air sacs that allow air to flow continuously through their lungs, providing a constant supply of oxygen.
What is the role of the lymphatic system?
The lymphatic system helps in the removal of waste, toxins, and excess fluids from the body. It also plays a role in immune function by producing lymphocytes, which fight infection.
What is the difference between an autotroph and a heterotroph?
Autotrophs are organisms that produce their own food through photosynthesis or chemosynthesis, while heterotrophs rely on consuming other organisms for food.
How does the immune system recognize pathogens?
The immune system uses a variety of cells and receptors to identify pathogens. White blood cells, such as T-cells and B-cells, recognize and destroy foreign invaders.
What are the benefits of exercise for the human body?
Exercise improves cardiovascular health, strengthens muscles and bones, boosts the immune system, and enhances mental well-being.
What is the role of the mitochondria in cells?
Mitochondria are the powerhouse of the cell, generating energy in the form of ATP, which is necessary for various cellular processes.
How do plants get nutrients from the soil?
Plants absorb nutrients like nitrogen, phosphorus, and potassium from the soil through their roots. These nutrients are essential for their growth and development.
What is transpiration in plants?
Transpiration is the process by which plants lose water vapor through small openings in their leaves called stomata. It helps in the movement of water and minerals from the roots to the leaves.
What are the different types of asexual reproduction in plants?
Plants can reproduce asexually through methods like budding, fragmentation, vegetative propagation, and spore formation, without the need for fertilization.
What are the primary functions of the nervous system?
The nervous system controls and coordinates body functions, processes sensory information, and enables communication between different parts of the body.
What is the significance of the digestive enzymes in the stomach?
Digestive enzymes in the stomach, like pepsin, break down proteins into simpler molecules that can be absorbed by the body.
What is a gene?
A gene is a segment of DNA that carries information about a specific trait, such as eye color or blood type. Genes are inherited from parents and influence physical characteristics.
How does the process of respiration differ from breathing?
Breathing is the physical process of inhaling and exhaling air, while respiration refers to the chemical process of releasing energy from food in the presence of oxygen.
What is the role of the stomach in digestion?
The stomach secretes gastric juices that break down food, especially proteins. It also churns food to mix it with digestive enzymes before moving it into the small intestine.
What is the role of the vascular system in plants?
The vascular system in plants includes xylem and phloem, which transport water, nutrients, and sugars throughout the plant, ensuring its growth and survival.
How do organisms adapt to extreme environments?
Organisms adapt to extreme environments through various strategies, such as behavioral changes, physiological adaptations (e.g., heat tolerance), or structural changes (e.g., thick fur).
What is the role of the reproductive system in humans?
The reproductive system allows for the production of offspring. In males, it involves sperm production, while in females, it involves egg production and the development of the fetus during pregnancy.
What are the different methods of seed dispersal in plants?
Seeds can be dispersed through wind, water, or by animals. Each method ensures that seeds are carried to new areas for germination and growth.
What is a habitat?
A habitat is the natural environment in which an organism lives. It includes both biotic (living) and abiotic (non-living) factors that affect the organism’s survival and reproduction.

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Top Indian Books for 8th Class Biology Question Paper 2018

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Science for Class 8 by NCERT
Publisher: NCERT
This book covers all the important concepts of biology including the structure and functions of plant and animal cells, human body systems, reproduction, and ecology. The questions are mainly descriptive and focused on understanding biological processes, with practical exercises and diagram-based questions.
Biology for Class 8 by S. Chand
Publisher: S. Chand
A comprehensive guide for students, this book explains the basic principles of biology in a simple language. It includes both theoretical questions and multiple-choice questions, covering topics like classification, photosynthesis, respiration, and more.
A Textbook of Biology for Class 8 by R.K. Bansal
Publisher: S. Chand
The book covers detailed topics such as the digestive system, the respiratory system, and plant physiology. It includes application-based questions and short-answer questions to test the understanding of concepts.
Objective Biology by Dinesh
Publisher: Dinesh Publications
This book is primarily focused on objective-type questions and is useful for students preparing for competitive exams. It covers topics such as the structure of cells, microorganisms, nutrition, and reproduction, with plenty of MCQs and match-the-following questions.
New Biology for Class 8 by Oxford University Press
Publisher: Oxford University Press
It is a well-structured book that discusses biology in detail, with a focus on conceptual clarity. It includes various types of questions such as diagram labeling, fill-in-the-blank, and short-answer questions related to life processes, human systems, and environmental studies.
Biology Class 8 by Lakhmir Singh and Manjit Kaur
Publisher: Lakhmir Singh Publications
The book covers essential biology topics such as cells, human health, nutrition, and plant growth. It features short and long-answer questions along with practical exercises and assessment questions to test the student’s learning.
Comprehensive Biology by K.K. Gupta
Publisher: Arihant Publications
A detailed guide for 8th-grade biology students, this book explains concepts in depth with simple language. The question types include multiple-choice, short-answer, and application-based questions on topics like digestion, respiration, and reproduction.
Biology Class 8 by R.S. Aggarwal
Publisher: R.S. Aggarwal Publishers
The book provides a thorough understanding of biological concepts and contains a variety of questions, including both theoretical and objective types, on topics such as nutrition, the nervous system, and environmental conservation.
Essentials of Biology by B. L. Wadehra
Publisher: Dhanpat Rai Publications
This book is designed to provide clear explanations of core biological concepts with engaging questions. It includes chapter-based tests, diagrams, and activities that help students in active learning and evaluation.
Biology Class 8 by M.L. Agarwal
Publisher: Agarwal Publications
A detailed guide to biology, it contains descriptive questions, short-answer questions, and diagram-based questions on topics like the human digestive system, excretion, and plant growth.
Biology for Class 8 by K. S. Kannan
Publisher: Pearson India
This book is an ideal choice for students looking for a thorough explanation of biological processes. It includes practice tests and questions that focus on important topics like photosynthesis, digestion, and human anatomy.
Foundation Biology for Class 8 by Amar Deep
Publisher: Amar Deep Publications
Focused on simplifying the learning process, this book offers various types of questions including matching, fill-in-the-blank, and conceptual questions. It is ideal for building foundational knowledge in topics such as the environment, ecosystems, and nutrition.
Science Workbook for Class 8 by Dr. S. S. Kumar
Publisher: Goyal Brothers
This workbook emphasizes on understanding biological concepts through practice. It includes worksheets, project work ideas, and questions on plant and animal cell structure, digestion, reproduction, and environmental conservation.
Biology Class 8 by A.C. Dutta
Publisher: New Saraswati House
The book explains biology concepts in a concise manner with a focus on question-answer patterns. It covers topics like the human skeletal system, the circulatory system, and life cycles, with problem-solving and application-based questions.
Biology for 8th Class by Pradeep Publications
Publisher: Pradeep Publications
This book is well-organized, providing clarity on biology topics with numerous types of questions, including fill-in-the-blank, true/false, short answer, and diagram labeling.
Biology for Class 8 by S.C. Sharma
Publisher: Rastogi Publications
This book focuses on understanding the life processes in humans and plants. It includes important concept-check questions, as well as diagram-based questions that enhance the student’s analytical skills.
Science for Class 8 by L. S. Kothari
Publisher: Kothari Books
This book provides a structured approach to understanding biology and includes theory-based questions, conceptual multiple-choice questions, and questions involving the identification of parts of the body and plants.
Living Science Biology for Class 8 by J.S. Yadav
Publisher: Living Science
The book contains a combination of theoretical explanations and practical examples, with multiple-choice questions, short-answer, and long-answer questions on human and plant systems, and ecosystems.
Biology for Class 8 by A.C. Kapoor
Publisher: Kapoor Publications
This book includes a wide variety of question types such as short-answer, MCQs, and diagram labeling questions. Topics like plant and animal nutrition, respiration, and life cycles are well-covered.
All-in-One Biology for Class 8 by Arihant
Publisher: Arihant Publications
Known for its in-depth coverage of topics, this book provides both theory and question-answer formats. The content focuses on various question types like true/false, fill-in-the-blank, and short and long questions on topics such as the human respiratory system, nutrition, and photosynthesis.

These books provide a broad range of topics with different types of questions that will help 8th-grade students prepare thoroughly for their biology exams. Each book is tailored to foster a deeper understanding of life sciences and prepares students to tackle different question formats in their upcoming biology exams.

8th Class Biology Question Paper 2018: Key Insights for Success

The 8th Class Biology Question Paper 2018 is an essential component of the academic journey for students in India. This paper tests the understanding of life sciences and serves as a foundation for higher studies in biology. A well-structured biology question paper is designed to evaluate not only a student’s theoretical knowledge but also their practical understanding of biological processes, human anatomy, plant physiology, and ecological systems.

When preparing for the 8th class biology exam, it is important to have a clear grasp of fundamental concepts. The curriculum for Class 8 biology covers diverse topics, from the structure and function of cells to the human respiratory and digestive systems. This broad range of topics can seem overwhelming, but with the right approach, students can master them with ease. Focus on understanding the core concepts and practice answering questions related to each chapter.

The question paper typically includes a variety of question types such as multiple-choice questions (MCQs), short answer questions, and long answer questions. Some sections might include diagram-based questions where students are asked to label parts of a plant or animal cell, the human digestive system, or other biological structures. Students may also be asked to explain processes like photosynthesis, respiration, and the circulatory system. These are some of the most common topics covered in the 8th class biology syllabus.

To prepare effectively, students should make use of sample papers and previous year question papers. This will help them familiarize themselves with the format and difficulty level of the exam. It is also important to allocate time for revision, focusing on tricky areas that need additional attention. Practice diagram labeling, as visual understanding plays a major role in biology exams. Teachers often emphasize the importance of diagrams, as they not only enhance understanding but also carry marks.

Additionally, students should engage in group discussions and take notes during class to reinforce learning. The more you engage with the material, the easier it becomes to recall key concepts during the exam. Study groups also offer the opportunity to share notes and different perspectives, making learning more dynamic.

Another effective study method for the 8th class biology exam is to focus on key terms and definitions. Understanding the scientific terminology in biology is crucial as it allows students to articulate answers with precision. Memorize terms such as “osmosis,” “photosynthesis,” and “mitosis,” and be prepared to use them correctly in your answers.

It’s also recommended to approach biology with a practical mindset. Watch educational videos or use interactive models available in digital resources to visualize complex biological systems. For example, understanding how blood circulates through the heart becomes much clearer with the aid of animation and simulations.