Podcast
Questions and Answers
Which of the following decomposers plays a role in breaking down organic matter?
Which of the following decomposers plays a role in breaking down organic matter?
- Cotton
- Aluminium foil
- Plastic
- Fungi (correct)
Aluminium foil is biodegradable.
Aluminium foil is biodegradable.
False (B)
List two benefits of segregating different types of wastes.
List two benefits of segregating different types of wastes.
To ensure proper disposal and to prevent disease spread.
What is the term used for substances that cannot be broken down in nature?
What is the term used for substances that cannot be broken down in nature?
The animal that is well adapted to the heat of the desert is the __________.
The animal that is well adapted to the heat of the desert is the __________.
Fungi and bacteria can be easily seen by the human eye.
Fungi and bacteria can be easily seen by the human eye.
Match the following waste types with their correct disposal method:
Match the following waste types with their correct disposal method:
What is the primary function of photosynthesis in the environment?
What is the primary function of photosynthesis in the environment?
The ___ faces the east in the morning.
The ___ faces the east in the morning.
Match each animal with its corresponding habitat:
Match each animal with its corresponding habitat:
Which vitamins are soluble in fat?
Which vitamins are soluble in fat?
Deficiency of Vitamin B1 causes a disease called Kwashiorkor.
Deficiency of Vitamin B1 causes a disease called Kwashiorkor.
What disease is caused by the deficiency of Vitamin A in the diet?
What disease is caused by the deficiency of Vitamin A in the diet?
The dietary fibres constitute _____% of blood.
The dietary fibres constitute _____% of blood.
Match the following vitamins with their deficiency disease:
Match the following vitamins with their deficiency disease:
Which of the following is an opaque material?
Which of the following is an opaque material?
Pure air is considered an opaque material.
Pure air is considered an opaque material.
Define natural materials.
Define natural materials.
Diffusion occurs fastest in a _____ in another gas.
Diffusion occurs fastest in a _____ in another gas.
Match the following substances to their solubility in water:
Match the following substances to their solubility in water:
Which of the following functions is NOT associated with iron?
Which of the following functions is NOT associated with iron?
Rickets is a deficiency disease caused by a lack of calcium.
Rickets is a deficiency disease caused by a lack of calcium.
What disease is primarily caused by protein deficiency in children?
What disease is primarily caused by protein deficiency in children?
A child with bow legs is likely suffering from __________.
A child with bow legs is likely suffering from __________.
Which of the following states of matter has very little hold on its constituent particles?
Which of the following states of matter has very little hold on its constituent particles?
Match the deficiency disease with its cause:
Match the deficiency disease with its cause:
The process of diffusion involves the mixing of particles from two different materials on their own.
The process of diffusion involves the mixing of particles from two different materials on their own.
What do you call anything that occupies space and has mass?
What do you call anything that occupies space and has mass?
A _______ object does not allow light to pass through it.
A _______ object does not allow light to pass through it.
Match the following terms with their definitions:
Match the following terms with their definitions:
Which one of the following is not an example of a pure substance?
Which one of the following is not an example of a pure substance?
The process of loading slows down the rate of sedimentation.
The process of loading slows down the rate of sedimentation.
What term describes the process of transferring the clear liquid into another container, leaving behind the residue?
What term describes the process of transferring the clear liquid into another container, leaving behind the residue?
A substance that sublimes easily is __________.
A substance that sublimes easily is __________.
Match the following methods with their appropriate descriptions:
Match the following methods with their appropriate descriptions:
Which of the following processes is used to remove tea leaves from tea?
Which of the following processes is used to remove tea leaves from tea?
Winnowing is a method used to separate fine particles from a mixture using a sieve.
Winnowing is a method used to separate fine particles from a mixture using a sieve.
What is the method known as that increases the rate of sedimentation in a solid-liquid mixture?
What is the method known as that increases the rate of sedimentation in a solid-liquid mixture?
The process used to separate camphor from salt is known as __________.
The process used to separate camphor from salt is known as __________.
Match the following mixtures with their corresponding separation methods:
Match the following mixtures with their corresponding separation methods:
Which of the following is NOT a characteristic of chemical changes?
Which of the following is NOT a characteristic of chemical changes?
Deforestation can be considered a reversible change.
Deforestation can be considered a reversible change.
What type of change is produced when an iron rod is bent?
What type of change is produced when an iron rod is bent?
Burning of fuel is a ________ reversible chemical change.
Burning of fuel is a ________ reversible chemical change.
Match the following changes with their correct category:
Match the following changes with their correct category:
Which of the following is a physical change?
Which of the following is a physical change?
Inflating a balloon is an example of an irreversible change.
Inflating a balloon is an example of an irreversible change.
What is an example of an irreversible change?
What is an example of an irreversible change?
When paper is burned, it undergoes a __________ change.
When paper is burned, it undergoes a __________ change.
Match the following changes with their category:
Match the following changes with their category:
Study Notes
Environmental Awareness and Biology
- Plastic is non-biodegradable and cannot decompose naturally.
- Advocating for the use of cloth or paper bags helps reduce plastic pollution.
- Morning glory flowers bloom at sunrise and close by sunset.
- Polar bears and penguins thrive in cold climates.
- Photosynthesis and respiration contribute to atmospheric balance of carbon dioxide and oxygen.
True or False Statements
- Herbivores cannot prepare their own food (False).
- Fungi and bacteria require magnification to be visible (False).
- Sunflowers orient towards the east in the morning (True).
- Camels possess no sweat glands to conserve water (True).
- Soil acts as a vital biotic component of the ecosystem (True).
Multiple Choice Highlights
- Biotic environments include producers, consumers, and decomposers.
- Organisms that utilize light for food synthesis are called autotrophs.
- Decomposers consist of bacteria and fungi.
- Aluminium foil is classified as non-biodegradable.
- Vermicomposting uses worms for organic matter decomposition.
- Camels have adaptations that allow them to withstand desert heat.
Nutritional Science
- Food is essential for the growth and survival of living organisms.
- Vitamins A, D, E, and K are fat-soluble; B and C are water-soluble.
- A deficiency in vitamin B1 can lead to Beri-Beri.
- Vitamin K plays a key role in blood clotting.
- Dietary fibers constitute 15% to 20% of blood.
Deficiency Diseases
- Vitamins and minerals are essential building blocks (True).
- Our skin does not synthesize Vitamin E from sunlight (False).
- Phosphorous deficiency can cause anemia (True).
- Balanced nutrition should contain all essential components (True).
- Kwashiorkor results from protein deficiency (False).
Matter and States
- Classification is the method of grouping objects with similar properties.
- Matter has both mass and occupies space.
- Gases consist of particles that have little attraction towards one another.
- Opaque materials do not allow light to pass through.
- Perfume diffusion illustrates how scent spreads through air.
Separation Techniques
- Hand picking is commonly used for cleaning grains.
- Common salt is mass-produced via evaporation.
- Tea leaves are separated from brewed tea using sieving.
- Sedimentation can be accelerated using a technique called loading.
- Centrifugation separates fine particles suspended in liquids.
Physical and Chemical Changes
- Irreversible changes create permanent alterations in substances.
- Physical changes can revert to the original state, such as bending an iron rod.
- Fast reversible changes include the burning of fuel, while rusting is a slow process.
- New substances formed during chemical changes exhibit different properties.
General Understanding
- Fast changes include phenomena like bursts of firecrackers, while growth is gradual.
- A substance's ability to return to its original form characterizes physical changes.
- Changes like burning paper or deforestation are irreversible, leading to permanent alterations.
- Inflating a balloon is an example of a reversible change, whereas the growth of a child exemplifies an irreversible change.
Studying That Suits You
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Description
Test your knowledge of environmental science with this fill-in-the-blank quiz. Topics covered include biodegradability, sustainable practices, and the processes of photosynthesis and respiration. Challenge yourself to recall important information about our natural world!
