APTI PLUS Academy For Civil Services

In the context of buoyant force, consider the following statements: 1. The buoyant force on an object submerged in a fluid depends only on the volume of the object and the density of the fluid. 2. According to Archimedes’ Principle, the buoyant force acting on an object is equal to the weight of the fluid displaced by the object. 3. An object will float if the buoyant force is less than its weight.   Which of the statements given above is/are correct?

Consider the following statements regarding types of X-rays: 1. Soft X-rays have lower energy and longer wavelengths compared to hard X-rays. 2. Hard X-rays are typically used for medical imaging due to their high penetration power. 3. Soft X-rays are primarily used in imaging biological tissues at high resolutions.   Which of the statements given above is/are correct?

📢 Join us LIVE on YouTube for a Masterclass on the Art of Answer Writing! 📢 Elevate your UPSC and OPSC preparation with insights from Shweta Singh Madam, one of our most eminent faculty members. Dive into the critical techniques of answer writing that distinguish top scorers and understand what evaluators are looking for. 📅 Date: 10th November 2024 ⏰ Time: 12 PM (IST) 📍 Platform: YouTube Live (Link in bio) In this session, Shweta Singh Madam will share essential strategies, from structuring impactful answers to enhancing clarity and precision. Whether you're a beginner or a seasoned aspirant, this session will empower you to refine your answer-writing skills and boost your scoring potential. 🔔 Set your reminders and be ready to transform your approach to answer writing!

IMPORTANT NOTICE UPSC has released the marks of not qualified candidates of Civil Services Examination 2023.

Statement 1 is correct. T cells are a type of white blood cell (lymphocyte) crucial to adaptive immunity. While they originate as progenitor cells in the bone marrow, they migrate to the thymus to mature, hence the name "T cells." In the thymus, T cells undergo processes to ensure they can recognize foreign pathogens while sparing the body’s own tissues, a fundamental aspect of immune tolerance​. Statement 2 is correct. Helper T cells (often called CD4+ T cells) play a regulatory role in the immune response. They do not directly kill pathogens; instead, they release cytokines that stimulate B cells to produce antibodies and activate other immune cells like macrophages. Helper T cells are thus vital for initiating and sustaining immune responses against various infections​. Statement 3 is correct. Cytotoxic T cells (CD8+ T cells) are another major subtype responsible for directly attacking and killing infected or cancerous cells. They recognize infected cells by detecting viral or other abnormal proteins on the cell surface, specifically bound to major histocompatibility complex (MHC) molecules. Once identified, cytotoxic T cells release enzymes that induce cell death, effectively controlling infections and eliminating harmful cells​.

Statement 1 is incorrect: The Right to Property was recognized as a fundamental right in the original constitution, however, the First Amendment (1951) amended the provisions to address agrarian reforms and social inequalities. The 44th Amendment (1978) repealed the fundamental right to property, and added Article 300-A to acknowledge the right to property as a legal rather than a fundamental right. Statement 2 is incorrect: In the Property Owners Association & Ors. v. State of Maharashtra & Ors case, the court clarified that Article 39(b) defines "material resources of the community", may include some privately owned resources, but this must be identified on a case-by-case basis, by considering the nature of the resource, impact on the welfare of the community, the scarcity of resources, and the effects of its concentration in private hands.

In the context of the immune system, consider the following statements about T cells: 1. T cells originate in the bone marrow but mature in the thymus. 2. Helper T cells are a subtype that aids in activating B cells and other immune responses. 3. Cytotoxic T cells are responsible for directly attacking and destroying infected cells. Which of the statements given above is/are correct?

Consider the following statements: 1. The 42nd Amendment Act inserted Article 300-A to acknowledge the right to property as a legal right rather than a fundamental right. 2. The term “material resources of the community” in the Article 39 excludes privately owned resources. Which of the above statements is/are correct?

UPSC Annual Revised Calendar Published Today

Statement 1 is incorrect. The Ningol Chakkouba is one of the biggest festivals of Manipur where the married sister visit maternal house for a reunion on the invitation of her brother. It is not related to agriculture or harvesting. Statement 2 is correct. Married women visit their maternal house on this day for a grand feast and family reunion. Statement 3 is correct. The Chakkouba is held every year on the second day of the lunar month of Hiyangei of the Meitei calendar.

Statement 1 is correct. Magnolias are native to East and Southeast Asia, the Americas, and the West Indies. Statement 2 is correct. The Magnolia flower is adapted to pollination by beetles rather than bees, which is why the flower’s structure protects it from damage by these early pollinators. Statement 3 is correct. In traditional Chinese medicine, Magnolia bark has been used for conditions like anxiety, digestive disorders, and respiratory issues.