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Which of the following is a beneficial effect of micro-organisms in agriculture?
Which of the following is a beneficial effect of micro-organisms in agriculture?
Micro-organisms can only survive in soil and water environments.
Micro-organisms can only survive in soil and water environments.
False
What is the process called where Rhizobium bacteria absorb atmospheric nitrogen for plants?
What is the process called where Rhizobium bacteria absorb atmospheric nitrogen for plants?
Nitrogen fixation
The bacterium ___ is used in developing golden rice enriched with vitamin A.
The bacterium ___ is used in developing golden rice enriched with vitamin A.
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Match the micro-organisms to their corresponding uses:
Match the micro-organisms to their corresponding uses:
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Which environments can micro-organisms thrive in?
Which environments can micro-organisms thrive in?
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Micro-organisms have no economic applications.
Micro-organisms have no economic applications.
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What is the name of the process that involves using bacterial genes to enhance crop characteristics?
What is the name of the process that involves using bacterial genes to enhance crop characteristics?
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What is the role of the iris in the human eye?
What is the role of the iris in the human eye?
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The blind spot is the area of the retina where light-sensitive cells are densely located.
The blind spot is the area of the retina where light-sensitive cells are densely located.
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What is the function of the lens in the human eye?
What is the function of the lens in the human eye?
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The transparent watery liquid that fills the space between the lens and cornea is known as _____ humour.
The transparent watery liquid that fills the space between the lens and cornea is known as _____ humour.
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Match the following parts of the eye with their functions:
Match the following parts of the eye with their functions:
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Which of these statements is true about the vitreous humour?
Which of these statements is true about the vitreous humour?
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The cornea is a thin, transparent part of the sclerotic layer that allows light to enter the eye.
The cornea is a thin, transparent part of the sclerotic layer that allows light to enter the eye.
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What is the function of the ciliary muscle in the eye?
What is the function of the ciliary muscle in the eye?
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What is the primary cause of cataracts in the eye?
What is the primary cause of cataracts in the eye?
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Glaucoma is a disease that can be completely reversed with treatment.
Glaucoma is a disease that can be completely reversed with treatment.
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What visual effect is associated with cataracts?
What visual effect is associated with cataracts?
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A person with ______ has an increased risk of developing glaucoma.
A person with ______ has an increased risk of developing glaucoma.
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Match the type of eye disease with its description:
Match the type of eye disease with its description:
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Which of the following factors can contribute to the development of cataracts?
Which of the following factors can contribute to the development of cataracts?
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Sore eyes cannot spread through contact with infected individuals.
Sore eyes cannot spread through contact with infected individuals.
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What is the main function of the eye lens in a healthy eye?
What is the main function of the eye lens in a healthy eye?
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What is the smallest form in which oxygen can exist independently?
What is the smallest form in which oxygen can exist independently?
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All molecules formed by atoms of the same element are known as hetero-atomic molecules.
All molecules formed by atoms of the same element are known as hetero-atomic molecules.
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What does the symbol Z represent in atomic science?
What does the symbol Z represent in atomic science?
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The sum of protons and neutrons in an atom is called the __________.
The sum of protons and neutrons in an atom is called the __________.
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Match the element to its atomic number:
Match the element to its atomic number:
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Which of the following elements has the highest atomic number?
Which of the following elements has the highest atomic number?
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The number of electrons in an atom is always equal to the number of protons.
The number of electrons in an atom is always equal to the number of protons.
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What is the mass number of an oxygen atom?
What is the mass number of an oxygen atom?
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What is positive compatibility represented by in the Rhesus factor compatibility chart?
What is positive compatibility represented by in the Rhesus factor compatibility chart?
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A blood group with Rh- can only receive blood from another Rh- blood group.
A blood group with Rh- can only receive blood from another Rh- blood group.
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Name two upper chambers of the human heart.
Name two upper chambers of the human heart.
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To maintain a healthy blood circulatory system, it is recommended to reduce _____ consumption.
To maintain a healthy blood circulatory system, it is recommended to reduce _____ consumption.
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Match the following blood groups with their corresponding Rhesus factor compatibility:
Match the following blood groups with their corresponding Rhesus factor compatibility:
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Which of the following habits is recommended for maintaining a healthy circulatory system?
Which of the following habits is recommended for maintaining a healthy circulatory system?
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The aorta is connected to the right ventricle of the heart.
The aorta is connected to the right ventricle of the heart.
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List one condition that should be controlled for healthy blood circulation.
List one condition that should be controlled for healthy blood circulation.
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What type of movement occurs towards the direction of a stimulus?
What type of movement occurs towards the direction of a stimulus?
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Nastic movements are influenced by the direction of the stimulus.
Nastic movements are influenced by the direction of the stimulus.
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What is the term used for roots growing towards gravity?
What is the term used for roots growing towards gravity?
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The coiling of tendrils in plants like passion fruit is an example of __________.
The coiling of tendrils in plants like passion fruit is an example of __________.
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Which type of tropic movement occurs when plant stems grow away from the ground?
Which type of tropic movement occurs when plant stems grow away from the ground?
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Match the following types of tropic movements with their descriptions:
Match the following types of tropic movements with their descriptions:
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Tropic movements are always caused by growth substances.
Tropic movements are always caused by growth substances.
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Describe nastic movements in plants.
Describe nastic movements in plants.
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Study Notes
Basic Concepts Associated with Forces
- A force is a push or a pull
- Forces can move objects that are at rest
- Forces can stop objects that are in motion
- Forces can change the speed of objects that are in motion
- Forces can change the direction of objects that are in motion
- Forces can change the shape of objects
Pressure Exerted by Solid
- Pressure is the force applied per unit area
- Pressure is inversely proportional to the area
- A smaller area results in a larger pressure
- A larger area results in a smaller pressure
- The greater the force, the greater the pressure
The Human Circulatory System
- The circulatory system transports blood throughout the body
- The heart is the organ that pumps blood
- The heart has four chambers: the right atrium, left atrium, right ventricle, and left ventricle
- The aorta is connected to the left ventricle
- The pulmonary artery is connected to the right ventricle
- The superior vena cava and inferior vena cava open into the right atrium
- The left and right pulmonary veins open into the left atrium
- The bicuspid valve is between the left atrium and left ventricle
- The tricuspid valve is between the right atrium and right ventricle
- Arteries carry blood away from the heart
- Veins carry blood toward the heart
- Capillaries are the smallest blood vessels where the exchange of nutrients and wastes occur
- Blood consists of plasma and corpuscles (red blood cells, white blood cells, and platelets).
- Red blood cells carry oxygen
- White blood cells fight infection
- Platelets help in the clotting process
- Plasma transports dissolved substances
- Blood transfusions require compatibility of blood type (A, B, AB, O) and Rh factor (positive or negative)
Plant Growth Substances
- Plant growth is influenced by substances called plant growth substances
- Auxins promote stem growth and prevent lateral bud growth
- Gibberellins promote stem elongation and fruit growth
- Cytokinins promote cell division and leaf growth and delay aging
- Abscisic acid causes stomata to close and decreases transpiration
- Ethene is needed for fruit ripening
Support and Movements of Organisms
- Living organisms can change their location or move parts of their body in response to stimuli
- Animals use various appendages (legs, wings, cilia, etc.) for movement
- Invertebrates use muscles while vertebrates use muscles and bones
- Plant movements include tropic and nastic movements.
- Tropic movements are responses to external stimuli (light, gravity, water) that cause growth in a certain direction.
- Nastic movements are non-directional responses to stimuli such as touch (i.e., plant parts folding)
The Evolutionary Process
- The origin of Earth is roughly 4.5 billion years old
- The Big Bang is the widely accepted theory of the Universe's origin
- Various theories about the origin of life include theories of special creation, spontaneous generation, cosmozoic theory, and chemical evolution
- The theory of evolution explains how life continues to change and diversify
- Fossil records are an important part of the evidence for evolution
- Homologous structures, analogous structures, and vestigial structures are all considered evidence for evolution
- Many organisms that now live have been around for a long time, and their form has not changed much (e.g., horseshoe crabs, some fish and ferns)
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Description
This quiz covers the beneficial effects of micro-organisms in agriculture and their roles in enhancing crop characteristics. Additionally, it explores the human eye's anatomy, including the functions of different parts. Test your knowledge on these essential biological concepts.
