UPSC Daily Quiz | 15 May 2024

Explanation 

• Statements 1 and 2 are incorrect:  An exoplanet, also known as an extrasolar planet, is a planet that orbits a star other than the Sun and is therefore not within our Solar System. 
• A binary star system consists of two stars that are gravitationally bound to each other and orbit a common center of mass.

Explanation 

• High food inflation can make basic food items unaffordable for many people, particularly the lower-income population. To address this issue, governments can implement policies such as increasing subsidies on essential food items and setting price controls to help keep the costs down. 
• These measures can ensure that people have access to affordable food and can help reduce the overall impact of high food inflation.

Explanation 

• The sea anemone (Actiniaria) is part of a family of aquatic animals distinguished by soft bodies and the ability to sting.
• Taxonomic Classification: Sea anemones, soft-bodied marine invertebrates, belong to the phylum Cnidaria, sharing kinship with corals, jellyfish, and sea pens. 
• Habitat: They inhabit oceans worldwide, ranging from shallow waters to deep sea environments, with a majority thriving in coastal tropical regions.
  • Exhibiting a diverse array of colors, shapes, and sizes, they establish symbiotic relationships with green algae, akin to corals. 
  • However, rising sea surface temperatures disrupt this association, leading to bleaching events. 
• Symbiotic Bonds: A symbiotic relationship is one in which organisms, people, or things exist together in a way that benefits them all. 
  • The symbiotic relationship between an anemone and a clownfish (Amphiron ocellaris) is a classic example of two organisms benefiting the other.
  •  The anemone provides the clownfish with protection and shelter.
  • The clownfish provides the anemone nutrients in the form of waste while also scaring off potential predator fish.

Explanation 

• The colors of auroras are determined by the types of gases in the Earth’s atmosphere. When charged particles from the Sun collide with gas molecules in the Earth’s atmosphere, they emit light of various colors.
•  Oxygen molecules typically produce green and red auroras, while nitrogen molecules produce blue and purple auroras.

Explanation 

• Researchers at Princeton University discovered that the roundworm Caenorhabditis elegans, commonly known as C. elegans, exhibits an intriguing behaviour where offspring inherit the knowledge of avoiding disease-causing bacteria consumed by their parents.
• Roundworms or eelworms constitute the phylum Nematoda.