Zoology: Solved Previous Year Question Paper for NCERT/ CBSE  Class 12th Zoology Paper code (HSEIIRKO–1) 

Leave a Comment / Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Zoology, Zoology /

Humans have been producing silk using the silkworm, an insect, for thousands of years. A luxurious material, silk is used to create a variety of products, including clothing, bedding, and drapes. The silkworm is a crucial insect for human prosperity as it gives silk producers a vital source of revenue and aids in the creation of jobs in the textile sector. Since the silkworm is a crucial link in the food chain, it also contributes to the preservation of biodiversity. Numerous birds and other animals consume silkworm larvae, providing a natural food source. The silkworm is a significant pest control tool since it also produces a pesticide that is naturally occurring. The silkworm is a beneficial insect that plays a significant role in human welfare.

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Botany: Solved Previous Year Question Paper for NCERT/ CBSE Class 12th (Paper code 81019)

Leave a Comment / Botany, General Questions, Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Botany /

Crops that have been genetically altered to produce proteins from the soil bacterium Bacillus thuringiensis are referred to as Bt. crops (also known as Bt. transgenic crops) (Bt.). Toxic to some insect species, these proteins act as a natural pesticide. Bt corn, which has been altered to produce the Bt protein Cry1Ab, is one example of a Bt crop.

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Can you share your UPI ID without risk: Safe Digital Banking Practices

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SAFE DIGITAL BANKING PRACTICES
• No matter how legitimate they may seem, never give out your account information, including your account number, login ID, password, PIN, UPI-PIN, OTP, and ATM/debit/credit card details, to anybody, not even bank employees.
• A popular tactic used by scammers is to threaten to block your account through phone calls or email under the premise that your KYC hasn’t been updated and urge you to click a link to do so. Never accept requests to update or expedite your KYC. Always go to your bank’s, NBFC’s, or e-wallet provider’s official website or call the branch.
• Don’t instal any unauthorised apps on your phone or another device. Your private information could be accessed discreetly by the app.
• MPIN entry is not necessary for transactions involving the receipt of money or the scanning of barcodes or QR codes. Therefore, use caution if instructed to.
• For contact information, always go to the bank’s, NBFC’s, or e-wallet provider’s official website. Search engine results for phone numbers could be fake.
• Verify the spelling of URLs and domain names that you get through emails or SMS. Use only websites and apps that have been validated, secured, and are reputable for online banking, i.e. websites that begin with “https.” Inform the local police or the cybercrime division once if you have any suspicions.
• Contact your bank or e-wallet provider right once if you receive an OTP for a transaction that wasn’t your idea. Inform your bank or e-wallet provider right away if you receive a debit SMS for a transaction that hasn’t been completed, and has all debit methods, including UPI, blocked. Check for any additions to the beneficiary list that have been enabled for online or mobile banking if you suspect fraudulent activity in your account.
• Don’t share the password of the email account that is connected to your bank or e-wallet account. Never use the same password for your bank account, your email, and any e-commerce or social media sites. Avoid using public, open, or free networks for banking.
• When registering for any website or application using your email as the user-id, avoid using the term “password” as your email password. The password you use to access your email, particularly if it’s tied to your account, should be specific to email access only and should not be used to access any other websites or applications.
• Don’t be duped by suggestions that money is deposited with the RBI on your behalf for international transfers, commission payments, or lottery winners.
• Check your phone and email messages frequently for notifications from your financial service provider. Any unauthorised transaction should be reported right away to your bank, NBFC, or service provider so that they can block the card, account, or wallet and stop any additional losses.
• Protect your cards and establish a daily transaction cap. Additionally, you can activate or deactivate for domestic or international use while setting limits. This can reduce fraud-related loss.

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Botany: Previous Year Question Paper for   NCERT/ CBSE  Class 12th Botany

1 Comment / Botany, Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Botany /

Characteristics of the genetic code
1. There are triplets of nucleotides in the genetic code. It is non-overlapping in the genetic code.
2. Commas are absent from the genetic code.
3. Degenerate genetic code.
4. Order exists in the genetic code. (5’ to 3’)
5. Codons called start and stop can be found in the genetic code.
6. An almost universal genetic code exists.

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Zinnia Plant: Introduction, Origin/history, Botany, Chemical constituents, Classification, Varieties, Diseases and Insect-Pests

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There are stunning decorative plants of the genus Zinnia. The aesthetic and commercial worth will be greatly enhanced by the plant’s novel bloom hues. Like chrysanthemums or sunflowers, it is not well-known. Due to its ability to be purchased as a cut flower in many different countries’ flower marketplaces, Zinnia hybrids have been bred into an excessive number of cultivars. Historically speaking, zinnia is a widely grown decorative plant. Numerous breeding organisations have developed brand-new cultivars with a variety of appealing physical traits. The difficulty in classifying zinnia cultivars is because many of the defining characteristics, such as height, bloom size, and leaf form, are qualitative and are strongly influenced by the environment. Moreover, zinnia hybrids are multiplied by seedlings. Therefore, parent cross-breeding is used to create zinnia plant seeds. In that case, cultivar conservation is challenging. Additionally, one form of propagation technology called in vitro culture offers rapid observation of genetic diversity and plant multiplication. Because there is little information on zinnia cultured in vitro, the conditions needed for doing so were established.

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Ecological Pyramids: Definition, Types, Importance, Limitations, Bioenergy and Frequently Asked Questions

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Bioenergy
Fuel that comes either directly or indirectly from biological sources is known as bioenergy. Trees, corn, rice hulls, peanut shells, sugar cane, grass clippings, leaves, manure, and municipal solid waste are examples of organic material that is used as a source of biomass energy. In underdeveloped nations, biomass energy from sources like wood, agricultural waste (also known as bagasse), and manure is still the predominant energy source. For instance, countless woodstoves are utilised in these areas to generate heat for cooking or heating buildings. The anticipated yearly global production of plant biomass is 2740 Quads (1 Quad = lOI6 BTUs), which is eight times the estimated annual global energy consumption of 340 Quads [I]. As a result, biomass is a sizable source of renewable energy. Biomass may provide a significant amount of the world’s energy through short-rotation forestry, improvements in harvesting and processing methods, and more efficient stoves and boilers. Economic gains are anticipated as biomass power technology [Z] and energy crops become more widely used and generate new employment, especially for rural communities.

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The Best Morning Assembly Anchoring Script: Welcome Speech for School Assembly, Thought For The Day, G.K Questions, Science fact, News, Speech, Inviting the Principal to Say a Few Words

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Greeting to School Assembly
When everyone has assembled in the assembly hall, including teachers, administrators, and students, a morning school assembly can begin. The anchor may direct the students if the crowd is disorderly and disorganised by saying: “I would advise the kids to please stand in a line and keep silent. The morning meeting will start in a moment. Many thanks.
The anchor may open the show with a quote, a famous passage, or a brief, poignant poem to grab everyone’s attention after everyone has arrived and it is time to begin. Below are a few quotations that you can include in your script:
It’s crucial to extend a warm welcome to everyone at this point. Greetings and a hearty good morning to our esteemed Principal Sir or Ma’am, our cherished teachers, staff members, and of course, my dear schoolmates. I am [your name] from class [x], and I will serve as your assembly’s anchor today. Today is Day —- and the date is ———-, Year —-. We shall begin this lovely day by praying like we always do. Please stand upright, clasp your hands together, and close your eyes. So let’s get started. – [Reciting the prayer. “

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Probiotics: Introduction, Types, Characteristics, Mechanism of action, and Current Status of Probiotics in India

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The term probiotic was derived from the Greek word, meaning for life. Kollath initially coined this term in 1953. Probiotics have been around for a very long time. Human ingestion of fermented milk is credited as the origin of the probiotic. Probiotics then gained popularity in animal nutrition. Even in the Vedic era, the importance of fermented milk in the human diet was understood. Microbiologists discovered in the late 19th century that the microflora in the gastrointestinal tracts of healthy people differed from that found in sick people. The pioneering work of Metchnikoff from the Pasteur Institute in the early 1900s can be credited with the initial detection of the beneficial role of these bacteria. To replace dangerous microorganisms with helpful ones, he advised giving these helpful bacteria a cold. Metchnikoff looked into the extraordinary number of Bulgarians who reach their 100th birthday. He claimed that a bacteria in the popular Bulgarian yoghurt was responsible for their good health and longevity, and he called the yoghurt-culturing microbe Lactobacillus Bulgaricus in honour of the Bulgarian people.

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Human Microbiome: Definition, Effect on Health, Examples, Human Microbiome Project, and Importance

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The microbiome of an individual may affect their propensity to contract infectious diseases and play a role in chronic gastrointestinal conditions including Crohn’s disease and irritable bowel syndrome. The way a person reacts to pharmacological therapy is determined by certain assemblages of microorganisms. The mother’s microbiome may have an impact on her children’s health. Researchers who are analysing the human microbiome are finding new species and genes. Numerous combinations of microbe species have been related to specific human health issues in genetic studies that assess the relative abundance of diverse species in the human microbiome. A deeper comprehension of the variety of microbes found in the human microbiome may result in innovative treatments, such as growing more “good” bacteria to treat an infection brought on by “bad” bacteria. The HMP acts as a guide for figuring out how the microbiome affects immunity, disease, nutrition, and overall health.

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Plant Breeding: Definition, Experiments, Aims, varieties and steps in Plant breeding

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Plant breeding is the practice of modifying a plant’s genetic composition to achieve desired traits. Genetic engineering, cross-breeding, and selective breeding are used to accomplish this. Plant breeders work to create plants with desirable characteristics, such as increased nutritional value, disease resistance, drought tolerance, or higher production.

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