APTI PLUS Academy For Civil Services

Consider the following statements about Bioacoustics: 1. Bioacoustics is the cross-disciplinary science to study combined biology and acoustics. 2. It is only possible in animals. 3. Biotremology is one of its types to study substrate-borne vibrations used by terrestrial animals. Which of the above statements are correct?

Statement 1 is correct: They are Red giants 100,000 times brighter and 400 million times larger than the Sun. Astronomers found the stage of the red giant star Betelgeuse by studying the pulsations. Statement 2 is correct: It is the second-brightest star in the Orion constellation, with irregular brightness changes debated by researchers. Statement 3 is incorrect: It has two pulsation cycles, one over a year and another around six years. Pulsations in the star suggest Betelgeuse is approaching a supernova explosion. Pulsation in stars is the periodic expansion and contraction of the outer layers of a star, which causes change in luminosity.

Statement 1 is correct: Industrial alcohol, which is also known as denatured alcohol, is ethanol (with chemical formula C₂H₅OH) with added impurities. It is generally unfit for human consumption due to the presence of impurities. Ingesting industrial alcohol can lead to severe health consequences and even death due to its poisonous nature. It is different from Usable alcohol or absolute alcohol which are predominantly called ethyl alcohol (ethanol). Statement 2 is correct: They are poisonous and thus unfit for consumption. It contains high amounts of additives including methanol, which is a toxic alcohol. Statement 3 is incorrect: They have Industrial use as a fuel, cleaning solvents, etc and they cannot be used in medical or laboratory premises due to toxicity.

Statement 1 is correct: In the first-past-the-post system, the candidate who gets the most number of votes in a constituency, declared as winner, even if they don't get a majority of the votes, this system is used for electing members of the Lok Sabha and State Legislative Assembly. Statement 2 is incorrect: The U.S. does not use a proportional representation system for congressional elections, it uses first-past-the-post system for congressional elections, in each congressional district, the candidate with the most votes wins the seat. In proportional representation, seats are allocated based on the percentage of votes each party receives. Statement 3 is incorrect: The USA does not have a single autonomous election authority overseeing national and state elections, elections are managed at the state level, and each state has its own procedures and regulations for conducting elections. In India, the Election Commission is responsible for overseeing elections at the national level and state level.

Consider the following statements about the “Betelgeuse” recently seen in the news: 1. They are Red giants. 2. It is the second-brightest star in the Orion constellation. 3. Pulsations in the Betelgeuse are not significant. How many of the above statements is/are correct?

Consider the following statements: 1. India uses a first-past-the-post system for Lok Sabha elections. 2. The U.S. uses a proportional representation system for congressional elections. 3. Both India and USA have a single autonomous election authority overseeing national and state elections. How many of the above statements are correct?

Consider the following statements about the Industrial alcohol: 1. They are ethanol but denatured alcohol with added impurities. 2. They are poisonous and thus unfit for consumption. 3. They are used in laboratories for disinfecting surfaces. Which of the above statements are correct?

We have published a new blog, 'The Art of Reading Newspaper for Civil Services Examination', designed to guide beginners on how to effectively approach newspaper reading. Whether you're self-studying or not enrolled in coaching, this blog provides essential tips to help you extract relevant information for UPSC, WBCS, and OPSC preparation. Master the skill of smart reading and enhance your exam readiness with this insightful guide! Read the blog now -https://aptiplus.in/blogs/art-of-reading-newspaper/

Yet another day of celebration at APTI PLUS as more successful OPSC OCS 2022 candidates visited us! We are delighted to honor their achievements and acknowledge their relentless efforts. As they embark on their new journeys in administration, we extend our best wishes for their bright futures. In the photo: Rank-13 Miss Noorie Parveen, Rank-63 Mr Subhranshu Sekhar Mishra, Rank-72 Miss Aiswariya Mahalik ,Rank- 438 Miss Swarnamayee Sahu. Again congratulations to All !

Statement 1 is incorrect: Orchids are non-woody perennial plants of the family Orchidaceae. It has over 25,000 species and nearly 1,000 genera. They are predominantly found in tropical regions. They exhibit diverse growth habitats which includes terrestrial and epiphytic forms, and many species adapted to specific ecological niches. Statement 2 is correct: Orchid flowers have unique and differing structural characteristics. These are: They have pollinia, which are masses of pollen that facilitate specific pollination strategies. The stamens and pistil are fused to form a column. This distinguishes orchids from other flowering plants. Statement 3 is correct: Seeds of Orchid are tiny and lack an endosperm. They depend on mycorrhizal fungi for germination and uptake of nutrients.Many orchids in many cases form mutualistic relationships with fungi, which helps orchids in their nutrient absorption and growth.

Statement 1 is correct: During his Nobel prize speech, Gary Ruvkun highlighted the significance of the nematode Caenorhabditis elegans in his scientific discovery. They are living transparent nematodes of size approx. 1 mm in length. C. elegans was the first genome sequenced animal in 1998. Much research on the species and availability of genome sequences gives it an advantage over other model organisms like flies and mice. Statement 2 is correct: They are Unsegmented pseudocoelomates. Pseudocoelomates have a fluid-filled body cavity which separates the gut from the body wall but it is not lined by mesoderm. They lack respiratory or circulatory systems. Statement 3 is correct: C. elegans have only 959 cells, and serve as a manageable model organism. Tracking developmental stages is also easy due to its transparency and short lifecycle.

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