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With reference to Vitamin A, consider the following statements: 1. Vitamin A is a fat-soluble vitamin mainly stored in the liver. 2. Retinol is the plant-derived precursor form of Vitamin A. 3. Beta-carotene is a provitamin A compound that can be converted into Vitamin A in the human body. 4. Vitamin A plays a role in vision by forming pigments in the retina.

With reference to Root Wilt Disease of coconut, consider the following statements: 1. It is caused by phytoplasma, which are bacteria-like organisms lacking a cell wall. 2. The disease is fatal and leads to the death of coconut palms within a short period. 3. It was first identified in Kerala more than a century ago. 4. The disease spreads mainly through insect vectors.

With reference to Intrinsically Disordered Proteins (IDPs), consider the following statements: 1. They lack a fixed three-dimensional structure under normal biological conditions. 2. They are also referred to as natively unfolded proteins. 3. Their primary function is to form rigid structural frameworks in cells. 4. They play an important role in cellular signalling and regulation.

With reference to the Womaniya Initiative, consider the following statements: 1. It was launched in January 2019 to promote women-led enterprises in public procurement. 2. It operates through the Government e-Marketplace (GeM) platform. 3. It exclusively targets large women-owned manufacturing companies. 4. It aims to reduce entry barriers for women entrepreneurs by providing a fully digital interface with government buyers.

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5. With reference to the ecological significance of caecilians, consider the following statements: Their burrowing activity improves soil aeration and structure. They help regulate populations of soil invertebrates. They are apex predators in terrestrial ecosystems. They form part of the food web for birds, reptiles, and small mammals. Which of the statements given above are correct? (a) 1, 2 and 4 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2, 3 and 4 Answer: (a) Explanation: Statements 1 & 2 is correct: Caecilians enhance soil health and control soil invertebrate populations. Statement 3 is incorrect: They are not apex predators; rather, they occupy mid-trophic levels. Statement 4 is correct: They serve as prey for birds, reptiles, and small mammals. Sources: Times of India

Mega Quiz Correct Answer with Explanation 1. With reference to the Womaniya Initiative, consider the following statements: It was launched in January 2019 to promote women-led enterprises in public procurement. It operates through the Government e-Marketplace (GeM) platform. It exclusively targets large women-owned manufacturing companies. It aims to reduce entry barriers for women entrepreneurs by providing a fully digital interface with government buyers. Which of the statements given above are correct? (a) 1, 2 and 4 only (b) 1 and 3 only (c) 2 and 4 only (d) 1, 2, 3 and 4 Answer: (a) Explanation: Statement 1 is correct: The Womaniya Initiative was launched on 14 January 2019 to strengthen women-led Micro and Small Enterprises (MSEs) in public procurement. Statement 2 is correct: It is implemented through the Government e-Marketplace (GeM) platform. Statement 3 is incorrect: The initiative targets women-led MSEs and SHGs, not large companies. Statement 4 is correct: By offering a direct, transparent, digital interface, it eliminates intermediaries and lowers entry barriers. Source: PIB 2. With reference to Intrinsically Disordered Proteins (IDPs), consider the following statements: They lack a fixed three-dimensional structure under normal biological conditions. They are also referred to as natively unfolded proteins. Their primary function is to form rigid structural frameworks in cells. They play an important role in cellular signalling and regulation. Which of the statements given above are correct? (a) 1, 2 and 4 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2, 3 and 4 Answer: (a) Explanation: Statement 1 is correct: IDPs do not adopt a stable, ordered 3D structure under physiological conditions. Statement 2 is correct: They are also known as natively unfolded or intrinsically unstructured proteins. Statement 3 is incorrect: IDPs are flexible and dynamic, not rigid structural proteins. Statement 4 is correct: IDPs are crucial for cellular signalling, regulation, and communication. Source: The Hindu 3. With reference to Root Wilt Disease of coconut, consider the following statements: It is caused by phytoplasma, which are bacteria-like organisms lacking a cell wall. The disease is fatal and leads to the death of coconut palms within a short period. It was first identified in Kerala more than a century ago. The disease spreads mainly through insect vectors. Which of the statements given above are correct? (a) 1, 3 and 4 only (b) 1 and 2 only (c) 2, 3 and 4 only (d) 1, 2, 3 and 4 Answer: (a) Explanation: Statement 1 is correct: Root wilt disease is caused by phytoplasma, which are bacteria-like organisms that lack a rigid cell wall. Statement 2 is incorrect: The disease is non-fatal but severely reduces productivity of coconut palms. Statement 3 is correct: It was first identified over 150 years ago in Erattupetta, Kerala. Statement 4 is correct: It spreads via insect vectors, with wind and continuous coconut belts aiding transmission. Source: The Hindu 4. With reference to Vitamin A, consider the following statements: Vitamin A is a fat-soluble vitamin mainly stored in the liver. Retinol is the plant-derived precursor form of Vitamin A. Beta-carotene is a provitamin A compound that can be converted into Vitamin A in the human body. Vitamin A plays a role in vision by forming pigments in the retina. Which of the statements given above are correct? (a) 1, 3 and 4 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2, 3 and 4 Answer: (a) Explanation: Statement 1 is correct: Vitamin A is fat-soluble and is primarily stored in the liver. Statement 2 is incorrect: Retinol is the active animal-derived form of Vitamin A, not a plant-derived precursor. Statement 3 is correct: Beta-carotene is the most common provitamin A, found in plant foods and converted to Vitamin A in the body. Statement 4 is correct: Vitamin A is essential for forming visual pigments (rhodopsin) in the retina, enabling low-light vision. Sources: Science Direct

With reference to the ecological significance of caecilians, consider the following statements: 1. Their burrowing activity improves soil aeration and structure. 2. They help regulate populations of soil invertebrates. 3. They are apex predators in terrestrial ecosystems. 4. They form part of the food web for birds, reptiles, and small mammals.