General Q&A for Class 12 · Page 28
5,215 free answers in General for Class 12 students, across CBSE, ICSE and State boards.
Question & Answer
Questions
- GeneralClass 12All
what is the menstrual cycle?
The menstrual cycle is a natural, monthly process that occurs in the female reproductive system of humans and some other mammals. It involves a series of hormonal and physiological changes that prepare the body for the possibility of pregnancy. Here's an overview of the menstrual cycle: Duration: The average menstrual cycle lasts about 28 days, although it can vary from person to person and may range from 21 to 35 days. Key Components: <p
- GeneralClass 12All
who invented cycle?
The invention of the bicycle, or "cycle," is attributed to several inventors and developments over time, and it was not the work of a single individual. The bicycle's evolution took place over several centuries, with various inventors contributing to its design and functionality. Here are some key milestones in the development of the bicycle: Early Concepts (15th-18th centuries): The earliest concepts of human-powered vehicles with wheels can be traced back to sketche
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How to draw water cycle?
Drawing the water cycle is a great way to visualize the continuous movement of water on Earth. Here are step-by-step instructions to help you draw a simple representation of the water cycle: Materials Needed: Paper Pencil Colored pencils or markers (optional) Steps: Start with the Earth: Draw a simple representation of the Earth in the center of your paper. It can be a basic circle or a more det
- GeneralClass 12All
what to eat when bp is low?
f you have low blood pressure (hypotension) and are experiencing symptoms such as dizziness, lightheadedness, or fainting, it's important to address the issue by consuming foods and beverages that can help raise your blood pressure and maintain your overall health. Here are some dietary recommendations for managing low blood pressure: Increase Fluid Intake: Dehydration can contribute to low blood pressure. Drinking plenty of fluids, especially water, can help maintain blood volume and blood p
- GeneralClass 12All
Select All That Are Functions Of Neurons And Glial Cells Receive Nerve Impulses Protect Neurons Nourish Neurons Calcium Storage?
The following statements describe the functions of neurons and glial cells: Receive Nerve Impulses: Neurons are specialized cells that receive, transmit, and process nerve impulses (electrical signals). They play a central role in the communication within the nervous system. Protect Neurons: Glial cells, also known as neuroglia, have a protective role in supporting and maintaining neurons. They help protect neurons from injury and infection an
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what do you infer from Sam's letter to charley?
I'm sorry, but I cannot infer the content or meaning of Sam's letter to Charley without more context or information about the letter and the specific content it contains. If you provide additional details or text from the letter, I would be happy to try to help you analyze its meaning or significance.
- GeneralClass 12All
What is the cut off mark for B Ed 2023 in Odisha?
I'm sorry, but I do not have access to specific and up-to-date information regarding the cutoff marks for B.Ed. admissions in Odisha for the year 2023. Cutoff marks can vary from year to year and can depend on factors such as the number of applicants, the availability of seats, and the performance of candidates in the entrance exams or qualifying examinations. To find the most accurate and current information about the cutoff marks for B.Ed. admissions in Odisha for 2023, I recommend
- GeneralClass 12All
Are Tom and Sam Curran brothers?
Yes, Tom Curran and Sam Curran are brothers. Both of them are English cricketers who have represented England in international cricket. Tom Curran is an all-rounder who has played as a fast-medium bowler and a lower-order batsman, while Sam Curran is a left-arm medium-fast bowler and a left-handed batsman. Both brothers have been involved in domestic and international cricket and have played together in various matches, including for the England national cricket team.
- GeneralClass 12All
How are you meaning in Punjabi?
In Punjabi, the word for "How are you?" is "ਤੁਸੀਂ ਕਿਵੇਂ ਹੋ?" (pronounced as "Tusi kiven ho?"). This is a common greeting used to inquire about someone's well-being or to ask how they are doing.
- GeneralClass 12All
What is the meaning of severe flood alert?
A "severe flood alert" typically indicates a high level of concern and a significant threat from flooding in a specific area. The exact terminology and definitions used for flood alerts can vary from one region or country to another, so it's essential to consider the specific context and guidelines provided by local authorities or meteorological agencies. In general, a severe flood alert may include the following characteristics: Imminent Danger: It suggests t
- GeneralClass 12All
How is the small intestine designed to absorb digested food?
The small intestine is exceptionally well-designed for the efficient absorption of digested food, a process crucial for providing nutrients to the body. Several structural and functional features of the small intestine contribute to its high absorptive capacity: Length: The small intestine is quite long, measuring about 6 to 7 meters (20 to 23 feet) in an average adult. This extensive length provides a large surface area for absorption. Villi and Micro
- GeneralClass 12All
How is food transported in plants?
Food in plants, primarily in the form of sugars and other organic compounds, is transported throughout the plant through a specialized system known as the vascular system. The vascular system in plants consists of two main types of tissues: xylem and phloem. These tissues play distinct roles in the transport of water, minerals, and organic compounds (food) within the plant. Phloem: Phloem is responsible for transporting food, primarily in the form of sugars produced through photosynthesis, fr
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How is oxygen and carbon dioxide transported in human beings?
Oxygen (O2) and carbon dioxide (CO2) are transported in the human body through the circulatory system, primarily using the blood as the carrier. This process involves several key steps: Respiration: The process begins with respiration, where oxygen is inhaled into the lungs and exchanged for carbon dioxide. Oxygen from the inhaled air enters the bloodstream, while carbon dioxide is expelled from the bloodstream into the lungs to be exhaled. Pulmonary Circulation: Oxygen-rich blood from the lu
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How many bones does a shark have?
Sharks are cartilaginous fish, and their skeletal system is primarily composed of cartilage, which is softer and more flexible than the bones found in vertebrates like mammals and birds. Sharks do not have bones in the same way that humans or other vertebrates do. Instead, they have a skeleton made of cartilage, connective tissue, and other specialized structures. While sharks lack true bones, they do have some calcified structures, such as: Cartilaginous vertebrae:</s
- GeneralClass 12All
How does phototropism occur in plants?
Phototropism is a plant's growth response to light, causing the plant to bend or grow towards a light source. It is a vital adaptive mechanism that helps plants optimize their exposure to sunlight for photosynthesis, which is the process by which plants convert light energy into chemical energy in the form of glucose. Phototropism is primarily regulated by the plant hormone auxin. Here's how phototropism occurs in plants: Perception of Light: Phototropism begins with
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How does chemical coordination occur in plants?
Chemical coordination in plants, also known as plant signalling or plant hormone signaling, involves the regulation of growth, development, and responses to environmental stimuli through the production and transmission of chemical signals within the plant. Plant hormones, also called phytohormones, play a central role in this process. Here are some key plant hormones and their roles in chemical coordination: Auxins: Auxins are primarily responsible for controlling cel
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What do Howell jolly bodies indicate?
Howell-Jolly bodies are small, round structures that are sometimes found in red blood cells during a peripheral blood smear examination. They are typically remnants of the cell nucleus that should have been expelled during the maturation of red blood cells in the bone marrow. Howell-Jolly bodies are not normally present in healthy, fully mature red blood cells, and their presence can be indicative of certain medical conditions or situations. The presence of Howell-Jolly bodies in red blood ce
- GeneralClass 12All
How is the atmosphere important to us?
The Earth's atmosphere is crucial to the well-being of all living organisms, including humans, in several ways. Here are some of the key ways in which the atmosphere is important to us: Air to breathe: The atmosphere provides the air we breathe, which is essential for the survival of humans and other terrestrial organisms. It contains oxygen, which is necessary for cellular respiration, a process that releases energy from food and sustains life. Protec
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How do plants get nutrients?
Plants obtain nutrients from their environment through a process known as nutrient uptake. They require a variety of essential nutrients to grow, develop, and carry out their metabolic processes. Here's an overview of how plants get nutrients: Soil: Most plants acquire the majority of their nutrients from the soil. The essential nutrients in soil include macronutrients (nitrogen, phosphorus, potassium) and micronutrients (iron, zinc, copper, etc.). These nutrients are present in the form of i
- GeneralClass 12All
How to make skin colour?
It's important to clarify that altering your skin color through artificial means, such as using skin-lightening or skin-tanning products, can have potential health risks and ethical implications. Additionally, embracing and appreciating your natural skin color is a healthier approach to self-esteem and body image. If you're interested in enhancing or maintaining the health and appearance of your skin, here are some general tips for skin care: Sun protection: Protect your skin from harmful UV