📘 Welcome
Hi User, you have selected Read Mode.
This is Time Free Mode for your convenience to understand every question as per your Ease and Time.
Here You get Answer and Details button. After mastering this mode, you can go for a test with Test Mode on the main page designed especially with Exam Features.
This is Time Free Mode for your convenience to understand every question as per your Ease and Time.
Here You get Answer and Details button. After mastering this mode, you can go for a test with Test Mode on the main page designed especially with Exam Features.
Q1. The process by which living things produce young ones of their own kind is called:
Reproduction is the biological process by which living organisms produce new individuals of their own species. This is one of the most important characteristics of living things because it ensures the continuation of their species. Without reproduction, life on Earth would eventually come to an end.
Q2. The process of taking in food and using it for growth and energy is called:
Nutrition is the process by which living organisms obtain and use food for their growth, development and energy needs. Plants make their own food through photosynthesis, while animals depend on plants or other animals for food. Proper nutrition is essential for all living beings to survive and stay healthy.
Q3. The process of breathing in oxygen and giving out carbon dioxide is called:
Respiration is the process by which living organisms take in oxygen from their surroundings and release carbon dioxide. This process releases energy from food, which is used for all life activities. Respiration is essential for survival because without energy, no living being can perform any function.
Q4. The removal of waste products from the body is called:
Excretion is the process by which living organisms remove harmful waste products produced inside their bodies. These waste products include urea, carbon dioxide and excess water. If these wastes are not removed, they can poison the body and cause diseases.
Q5. An organism that is alive and shows all life processes is called a:
A living thing is an organism that shows all the characteristics of life, including movement, nutrition, respiration, growth, reproduction and response to stimuli. Living things include plants, animals, birds, insects and microorganisms. They are made of cells and have the ability to grow and adapt to their surroundings.
Q6. Non-living things do not show:
Non-living things do not show any of the life processes like nutrition, respiration, growth, reproduction or excretion. They do not have cells and cannot respond to stimuli. Examples of non-living things include rocks, water, air, chairs and toys.
Q7. The movement of a plant’s roots towards water is an example of:
Response to stimulus is the ability of living things to react to changes in their environment. Plants show this when their roots grow towards water or their shoots grow towards sunlight. This response helps them survive by finding essential resources like water and light.
Q8. A baby frog is called a:
A tadpole is the aquatic larval stage of a frog. It has a tail and gills for breathing underwater, and it looks very different from the adult frog. Over time, the tadpole undergoes metamorphosis and develops legs, loses its tail and becomes a froglet.
Q9. The change that takes place in a frog from tadpole to adult is called:
Metamorphosis is the process of transformation from a young form to an adult form in animals like frogs and insects. In frogs, the tadpole changes into an adult frog by developing legs and losing its tail. This change is controlled by hormones and is a remarkable feature of some animals.
Q10. A baby insect that looks like a worm is called a:
A larva is the young, worm-like stage of many insects like butterflies and beetles. Larvae look very different from adults and have different feeding habits. They eat a lot and grow quickly before entering the pupa stage, where they undergo metamorphosis to become adults.
Q11. The resting stage in the life cycle of a butterfly is called a:
The pupa is a resting or inactive stage in the life cycle of insects like butterflies. During this stage, the larva is enclosed in a protective case called a cocoon or chrysalis, where it undergoes metamorphosis. Inside the pupa, the body parts are rearranged to form the adult insect.
Q12. The process of a seed growing into a new plant is called:
Germination is the process by which a seed develops into a new plant. It begins when the seed absorbs water and swells, causing the seed coat to break open. The embryo inside the seed then grows into a seedling, which eventually becomes a mature plant.
Q13. The increase in size or number of cells in a living organism is called:
Growth is the permanent increase in the size or number of cells of a living organism. In plants, growth is continuous throughout their life, while in animals, growth stops after reaching a certain age. Growth is a fundamental characteristic of all living things.
Q14. The ability of living organisms to sense and react to changes in their surroundings is called:
Living organisms can sense changes in their surroundings, which are called stimuli, and react to them, which is called response. A stimulus could be light, heat, touch, sound or the presence of food. This ability helps living beings to survive by moving towards beneficial things and away from harmful ones.
Q15. Animals that move from one place to another in search of food, shelter or mates are:
Movement is the ability of living organisms to change their position or location. Animals move from one place to another to find food, escape from predators, find shelter or search for mates. This movement is essential for their survival and is a key characteristic of living things.
Q16. The life cycle of an organism includes:
A life cycle is the series of stages that an organism goes through during its lifetime, from birth to death. These stages typically include birth, growth, reproduction and eventually death. Understanding the life cycle helps us understand how different organisms grow and reproduce.
Q17. The stage between larva and adult in an insect’s life cycle is called the:
In many insects, the life cycle has four stages: egg, larva, pupa and adult. The pupa is the transitional stage between the larva and the adult, during which the insect undergoes metamorphosis. The pupa is often enclosed in a protective cocoon and does not feed.
Q18. The egg of a frog hatches into a:
A frog’s egg hatches into a tadpole, which is the larval stage of the frog. The tadpole has a tail and breathes through gills, living entirely in water. As it grows, it undergoes metamorphosis and gradually develops legs and lungs.
Q19. A young frog with a tail and legs is called a:
A froglet is a young frog that has developed legs but still has a small tail. At this stage, the froglet begins to breathe air using its lungs but still stays near water. Gradually, the tail disappears, and the froglet becomes an adult frog.
Q20. The process by which living organisms produce new individuals is called:
Reproduction is the biological process by which living organisms produce offspring of their own kind. It ensures the continuation of the species and is essential for the survival of life on Earth. Reproduction can be sexual or asexual, depending on the organism.
Q21. The food that living organisms eat is used for:
The food that living organisms eat provides the nutrients needed for growth, energy and repair of damaged tissues. Carbohydrates and fats provide energy, proteins help in growth and repair, and vitamins and minerals protect the body from diseases. A balanced diet is essential for healthy living.
Q22. Plants respond to sunlight by growing towards it. This is an example of:
Plants respond to sunlight by growing towards it, which is called phototropism. This response helps the plant get more sunlight for photosynthesis, which is essential for making food. This shows that even plants, which do not move from place to place, are capable of responding to stimuli.
Q23. Human beings breathe through their:
Human beings breathe through their lungs, which are the respiratory organs in the chest. Air enters the lungs through the nose or mouth and oxygen is absorbed into the blood, while carbon dioxide is expelled. Lungs are essential for respiration in humans and many other animals.
Q24. Fish breathe through their:
Fish breathe through gills, which are special organs that extract oxygen from water. Water enters the fish’s mouth and passes over the gills, where oxygen is absorbed and carbon dioxide is released. Gills are adapted for aquatic life and allow fish to breathe underwater.
Q25. Insects breathe through tiny holes on their body called:
Insects breathe through tiny holes on their body called spiracles, which open into a network of air tubes called tracheae. Air enters the tracheae through these spiracles and directly reaches the cells. This respiratory system is different from lungs and is efficient for small organisms like insects.
Q26. The larva of a butterfly is also called a:
The larva of a butterfly is called a caterpillar. It is a worm-like stage with many legs, which eats leaves and grows rapidly. After the caterpillar stage, it forms a pupa and undergoes metamorphosis to become an adult butterfly.
Q27. The larva of a housefly is called a:
The larva of a housefly is called a maggot. It is a small, worm-like creature that feeds on decaying organic matter. After the maggot stage, it becomes a pupa and then develops into an adult housefly.
Q28. Movement in animals helps them to:
Animals move for many reasons, including finding food, escaping from predators, finding shelter and searching for mates. Movement is essential for survival and is one of the key characteristics of living things. Animals have different modes of movement, such as walking, flying, swimming and crawling.
Q29. What is the first stage in the life cycle of a frog?
The first stage in the life cycle of a frog is the egg, which is laid in water in large clusters called frog spawn. Each egg contains a tiny embryo that will develop into a tadpole. The eggs are protected by a jelly-like substance.
Q30. What is the final stage in the life cycle of a butterfly?
The final stage in the life cycle of a butterfly is the adult butterfly. After emerging from the pupa, the adult butterfly has wings and is capable of flying and reproducing. The adult butterfly feeds on nectar and lays eggs to start the next generation.
Q31. All living things need energy for their life processes. This energy comes from:
All living things need energy to carry out their life processes like growth, reproduction and movement. This energy comes from the food they eat. Plants make their own food through photosynthesis, while animals get food from plants or other animals.
Q32. The process of removing waste from the body is important because:
The removal of waste products from the body is important because waste materials like urea and carbon dioxide can be toxic if they accumulate. Excretion helps keep the internal environment clean and healthy. Different organisms excrete waste in different ways.
Q33. A response to a stimulus is always:
A response to a stimulus is the reaction of a living organism to changes in its environment. This response could be a movement, growth, or other behavioral changes. For example, plants grow towards light, and animals run away from danger.
Q34. A change in the environment that causes a living organism to react is called a:
A stimulus is any change in the environment that can be detected by a living organism. It can be light, heat, sound, touch or the presence of food or danger. Living organisms sense stimuli and respond to them in ways that help them survive.
Q35. The process by which a seed absorbs water and begins to grow is called:
Germination is the process by which a seed begins to grow into a new plant. It starts when the seed takes in water, swells up and breaks its outer coat. Then, the embryo inside the seed starts to grow roots and shoots.
Q36. The growth of a plant from a seed is triggered by the presence of:
The growth of a plant from a seed needs water, air and the right temperature. Water is needed to soak the seed and begin germination, and sunlight is needed once the seed sprouts to make food. Proper conditions help seeds grow into healthy plants.
Q37. An organism dies when:
Death is the permanent end of all life processes in an organism. When an organism dies, it no longer carries out nutrition, respiration, growth, reproduction or any other life function. Death is the final stage of the life cycle of all living things.
Q38. Young ones of animals depend on their parents for:
Young ones of animals depend on their parents for food, shelter and protection from predators. As they grow, they learn to do things on their own. Parental care is essential for the survival of many young animals.
Q39. When living organisms get old, they:
When living organisms get old, their body functions slow down and they eventually die. Death is the natural end of the life cycle. However, before dying, most organisms reproduce to ensure that their species continues.
Q40. Living things are made up of tiny units called:
All living things are made up of tiny units called cells, which are the building blocks of life. Cells carry out all the life processes and are the smallest unit that can be considered alive. Some living things are made of a single cell, while others are made of millions of cells.
Q41. Which of the following is a characteristic of living things?
One of the most important characteristics of living things is their ability to respond to stimuli in their environment. This means they can sense changes and react to them. This ability helps living organisms survive by avoiding danger and finding food.
Q42. Which of the following is NOT a characteristic of living things?
Living things are not made of rocks; they are made of cells. Rocks are non-living things and do not show any life processes like growth, reproduction or respiration. Living things are made of organic matter and have the ability to carry out life functions.
Q43. A tadpole breathes through:
A tadpole, which is the larval stage of a frog, breathes through gills because it lives underwater. The gills help extract oxygen from the water. As the tadpole metamorphoses into a frog, it develops lungs for breathing air.
Q44. An adult frog breathes through:
An adult frog breathes through both its lungs and its moist skin. On land, it uses its lungs, and in water, it can absorb oxygen through its skin. This dual breathing system allows frogs to live both on land and in water.
Q45. The change from a caterpillar to a butterfly is an example of:
The change from a caterpillar to a butterfly is a classic example of metamorphosis. During this process, the caterpillar completely changes its form and appearance. It goes through the larva and pupa stages before emerging as a beautiful adult butterfly.
Q46. Plants make their own food through a process called:
Photosynthesis is the process by which plants use sunlight, water and carbon dioxide to make their own food. This food is glucose, which gives them energy to grow. This process also releases oxygen into the air, which animals need to breathe.
Q47. Animals that depend on plants for food are called:
Herbivores are animals that eat only plants for food. Examples include cows, goats, deer and rabbits. They get their energy by feeding on grass, leaves, fruits and other plant parts.
Q48. Animals that eat both plants and animals are called:
Omnivores are animals that eat both plants and animals for nutrition. Humans, bears and pigs are examples of omnivores. They have a varied diet that helps them survive in different environments.
Q49. The heart pumps blood around the body. This is an example of:
The heart pumps blood around the body to deliver oxygen and nutrients to all the cells. This is called transportation. The blood also removes waste products from cells and carries them to the organs where they are removed.
Q50. The movement of an organism from one place to another in search of food is an example of:
The movement of an organism from one place to another in search of food is a response to hunger, which is a stimulus. This response helps the organism survive by finding food. It shows how living things adapt to their needs.
________________________________________
________________________________________
Q51. What sets living things apart from non-living things is that living things:
What sets living things apart from non-living things is that living things are made of cells and carry out all life processes like nutrition, respiration, growth, reproduction and excretion. Non-living things do not show any of these characteristics and cannot grow, breathe or reproduce. This is the fundamental difference between living and non-living.
Q52. Non-living things do not grow because:
Non-living things do not grow because they are not made of cells and do not have life processes. Growth is a characteristic of living things, which happens when cells divide and increase in number. Non-living things may increase in size (like a mountain growing due to deposits), but this is not true growth.
Q53. The life cycle of a frog has the following stages in order:
The life cycle of a frog begins with an egg, which hatches into a tadpole. The tadpole then grows into a froglet, which has legs and a tail. Finally, the froglet becomes an adult frog after losing its tail. This sequence shows the stages of metamorphosis.
Q54. The life cycle of a butterfly has the following stages in order:
The life cycle of a butterfly begins with an egg, which hatches into a larva or caterpillar. The caterpillar then forms a pupa or chrysalis and undergoes metamorphosis inside it. Finally, an adult butterfly emerges from the pupa. This is a complete metamorphosis.
Q55. The larva of a frog is called a tadpole. How is it different from an adult frog?
The tadpole is the larval stage of a frog and is very different from an adult frog. A tadpole has no legs, breathes through gills and lives entirely in water. In contrast, an adult frog has four legs, breathes through lungs and skin, and lives both on land and in water.
Q56. The death of an organism is the final stage of its:
Death is the final stage of the life cycle of all living organisms. After completing birth, growth, reproduction and aging, every organism eventually dies. However, organisms reproduce before dying to ensure the continuation of their species.
Q57. Which of the following is an example of a non-living thing?
A rock is a non-living thing because it does not show any life processes. It does not grow, breathe, eat, reproduce or respond to stimuli. Trees, dogs and frogs are all living things because they carry out life processes.
Q58. Which of the following is an example of a living thing?
A sunflower is a living thing because it is a plant that carries out all life processes like nutrition, respiration, growth and reproduction. It responds to sunlight and grows from a seed. Cars, chairs and books are non-living things.
Q59. The process of changing from a larva to an adult is called:
Metamorphosis is the process of transformation from a larva to an adult in animals like frogs and insects. During metamorphosis, the organism undergoes significant physical changes to become the adult form. This is a fascinating characteristic of some living organisms.
Q60. The main difference between living and non-living things is that living things:
The main difference between living and non-living things is that living things are made of cells and carry out life processes. Non-living things are not made of cells and do not have any life processes. Living things can grow, reproduce, respond to stimuli, breathe and excrete waste.