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Test: Organisms and Cells -2 - Class 6 MCQ


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20 Questions MCQ Test IGCSE Cambridge Science for Year 6 - Test: Organisms and Cells -2

Test: Organisms and Cells -2 for Class 6 2024 is part of IGCSE Cambridge Science for Year 6 preparation. The Test: Organisms and Cells -2 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Organisms and Cells -2 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Organisms and Cells -2 below.
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Test: Organisms and Cells -2 - Question 1

How do scientists typically use data in the process of drawing conclusions in scientific research?

Detailed Solution for Test: Organisms and Cells -2 - Question 1
Scientists use data to support or refute their hypotheses when drawing conclusions in scientific research. By analyzing the collected data, researchers assess whether the evidence aligns with the predictions made based on the hypotheses. This critical analysis allows scientists to determine the validity of their initial ideas and explain how the experimental results either support or contradict the proposed hypotheses.
Test: Organisms and Cells -2 - Question 2

What is the primary purpose of reproduction in organisms?

Detailed Solution for Test: Organisms and Cells -2 - Question 2
The primary purpose of reproduction in organisms is to ensure the continuity of the species. Through reproduction, organisms produce offspring that inherit their genetic traits, allowing the species to survive and thrive over generations. This process is crucial for maintaining biodiversity and adapting to changing environmental conditions.
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Test: Organisms and Cells -2 - Question 3

Which of the following sensory functions allows organisms to detect and respond to environmental changes?

Detailed Solution for Test: Organisms and Cells -2 - Question 3
Sensitivity is the sensory function that enables organisms to detect and respond to environmental changes. Organisms have evolved various senses such as taste, touch, hearing, smell, sight, and balance to perceive and react to stimuli in their surroundings. These sensory abilities are vital for survival, helping organisms navigate their environment, find food, avoid danger, and interact with other organisms.
Test: Organisms and Cells -2 - Question 4
What is the primary purpose of using line graphs to represent growth trends?
Detailed Solution for Test: Organisms and Cells -2 - Question 4
Line graphs are commonly used to represent growth trends as they effectively simplify complex data into a visual form that is easy to interpret. By plotting data points and connecting them with lines, trends and patterns can be easily identified, aiding in the analysis and understanding of growth patterns over time. ---
Test: Organisms and Cells -2 - Question 5
How does respiration differ from breathing?
Detailed Solution for Test: Organisms and Cells -2 - Question 5
Respiration is a biochemical process that involves releasing energy from food, requiring oxygen, and producing carbon dioxide. On the other hand, breathing is the physical process of taking in air (oxygen) and expelling carbon dioxide. While respiration is a chemical process that occurs within cells to produce energy, breathing is the mechanical process of inhaling and exhaling air. ---
Test: Organisms and Cells -2 - Question 6
What is the primary function of the liver in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 6
The liver plays a crucial role in synthesizing various substances such as proteins and cholesterol while also aiding in the breakdown of toxins like alcohol and medications. Additionally, it helps in storing essential nutrients and releasing them into the bloodstream when needed.
Test: Organisms and Cells -2 - Question 7
What is the main function of the kidneys in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 7
The kidneys are essential organs that play a key role in filtering waste products from the blood to form urine, which is then excreted from the body. They also help regulate electrolyte levels, blood pressure, and the production of red blood cells.
Test: Organisms and Cells -2 - Question 8
What is the primary function of the circulatory system in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 8
The circulatory system is responsible for circulating blood throughout the body, ensuring that oxygen and nutrients are delivered to cells and waste products are removed. This system consists of the heart, blood vessels, and blood. The heart pumps blood through the arteries, capillaries, and veins, maintaining the flow that sustains life.
Test: Organisms and Cells -2 - Question 9
What is the main function of muscles in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 9
Muscles play a crucial role in facilitating movement within the human body. They work in coordination with the skeletal system to enable various types of motion, from voluntary actions like walking to involuntary functions like heartbeats. Muscles are composed of muscle fibers that contract and relax to generate force and movement.
Test: Organisms and Cells -2 - Question 10
What is the primary function of the nucleus in a cell?
Detailed Solution for Test: Organisms and Cells -2 - Question 10
The nucleus acts as the control center of the cell, dictating various functions and processes. It contains the cell's genetic material and is responsible for regulating gene expression, cell growth, and cell division. Essentially, it plays a crucial role in managing the cell's activities and ensuring its proper functioning.
Test: Organisms and Cells -2 - Question 11
Why do root cells in plants lack chloroplasts?
Detailed Solution for Test: Organisms and Cells -2 - Question 11
Root cells in plants lack chloroplasts because they are usually located underground where there is no light available for photosynthesis. Since chloroplasts require light to carry out photosynthesis, it is not necessary for root cells to contain chloroplasts as their primary function is to absorb water and nutrients from the soil to support the plant's growth.
Test: Organisms and Cells -2 - Question 12
How do root hair cells contribute to the function of roots in plants?
Detailed Solution for Test: Organisms and Cells -2 - Question 12
Root hair cells play a vital role in plants by increasing the surface area of roots, which enhances the absorption of water and nutrients from the soil. This structural adaptation allows plants to efficiently uptake essential resources required for growth and development.
Test: Organisms and Cells -2 - Question 13
How do scientists typically use data in the process of drawing conclusions in scientific research?
Detailed Solution for Test: Organisms and Cells -2 - Question 13
Scientists use data to support or refute their hypotheses when drawing conclusions in scientific research. By analyzing the collected data, researchers assess whether the evidence aligns with the predictions made based on the hypotheses. This critical analysis allows scientists to determine the validity of their initial ideas and explain how the experimental results either support or contradict the proposed hypotheses.
Test: Organisms and Cells -2 - Question 14
What is the primary purpose of reproduction in organisms?
Detailed Solution for Test: Organisms and Cells -2 - Question 14
The primary purpose of reproduction in organisms is to ensure the continuity of the species. Through reproduction, organisms produce offspring that inherit their genetic traits, allowing the species to survive and thrive over generations. This process is crucial for maintaining biodiversity and adapting to changing environmental conditions.
Test: Organisms and Cells -2 - Question 15
Which of the following sensory functions allows organisms to detect and respond to environmental changes?
Detailed Solution for Test: Organisms and Cells -2 - Question 15
Sensitivity is the sensory function that enables organisms to detect and respond to environmental changes. Organisms have evolved various senses such as taste, touch, hearing, smell, sight, and balance to perceive and react to stimuli in their surroundings. These sensory abilities are vital for survival, helping organisms navigate their environment, find food, avoid danger, and interact with other organisms.
Test: Organisms and Cells -2 - Question 16
What is the primary purpose of using line graphs to represent growth trends?
Detailed Solution for Test: Organisms and Cells -2 - Question 16
Line graphs are commonly used to represent growth trends as they effectively simplify complex data into a visual form that is easy to interpret. By plotting data points and connecting them with lines, trends and patterns can be easily identified, aiding in the analysis and understanding of growth patterns over time. ---
Test: Organisms and Cells -2 - Question 17
How does respiration differ from breathing?
Detailed Solution for Test: Organisms and Cells -2 - Question 17
Respiration is a biochemical process that involves releasing energy from food, requiring oxygen, and producing carbon dioxide. On the other hand, breathing is the physical process of taking in air (oxygen) and expelling carbon dioxide. While respiration is a chemical process that occurs within cells to produce energy, breathing is the mechanical process of inhaling and exhaling air. ---
Test: Organisms and Cells -2 - Question 18
What is the primary function of the liver in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 18
The liver plays a crucial role in synthesizing various substances such as proteins and cholesterol while also aiding in the breakdown of toxins like alcohol and medications. Additionally, it helps in storing essential nutrients and releasing them into the bloodstream when needed.
Test: Organisms and Cells -2 - Question 19
What is the main function of the kidneys in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 19
The kidneys are essential organs that play a key role in filtering waste products from the blood to form urine, which is then excreted from the body. They also help regulate electrolyte levels, blood pressure, and the production of red blood cells.
Test: Organisms and Cells -2 - Question 20
What is the primary function of the circulatory system in the human body?
Detailed Solution for Test: Organisms and Cells -2 - Question 20
The circulatory system is responsible for circulating blood throughout the body, ensuring that oxygen and nutrients are delivered to cells and waste products are removed. This system consists of the heart, blood vessels, and blood. The heart pumps blood through the arteries, capillaries, and veins, maintaining the flow that sustains life.
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