Question Discussion & Solution

Concept-

• The stem is the ascending part of the axis bearing branches, leaves, flowers, and fruits.
• It develops from the plumule of the embryo of a germinating seed.
• The stem bears nodes and internodes. 
• The main function of the stem is spreading out branches bearing leaves, flowers, and fruits.
• It conducts water, minerals, and photosynthates. 

Explanation-

• Some stems perform the function of storage of food, support, protection, and of vegetative propagation. 
• The stem may not always be typically like what they are expected to be.
• They are modified to perform different functions.
• Underground stems of potato, ginger, turmeric, zaminkand, Colocasia are modified to store food in them.

Therefore turnip is not the stem.

Additional InformationTurnip

• Roots in some plants change their shape and structure and become modified to perform functions other than absorption and conduction of water and minerals.
• They are modified for support, storage of food, and respiration.
• Taproots of carrot, turnip, and adventitious roots of sweet potato, get swollen and store food.

The correct answer is PM Narendra Modi.

Key Points

• Prime Minister Narendra Modi will host the first India-Central Asia Summit in a virtual format on 27 January 2022.
• This will be the first engagement of its kind between India and the Central Asian countries at the level of leaders.
• The virtual summit will see the participation of the five countries Kazakhstan, Uzbekistan, Tajikistan, Turkmenistan, and the Kyrgyz Republic.

Additional Information

• Prime Minister Narendra Modi addressed the World Economic Forum's (WEF) Davos Agenda virtual event on 17 Jan'22.
• PM Narendra Modi has been invited as the chief guest at the 54th convocation ceremony of the IIT Kanpur on 28th Dec 2021.
• Amid the Omicron scare, Prime Minister Narendra Modi has announced the Covid-19 vaccine for children and booster doses for Health workers and senior citizens in December 2021.
• Prime Minister Narendra Modi has laid the foundation stone of Ganga Expressway in Shahjahanpur, Uttar Pradesh in December 2021.
• In October 2021, Prime Minister Narendra Modi has launched the Indian Space Association (ISA).
• Prime Minister Narendra Modi has been named among the 100 most influential people of 2021 by Time Magazine.
• In August 2021, Narendra Modi has become the first Indian Prime Minister to chair an open debate at United Nations Security Council (UNSC).

The correct answer is Kuchipudi Dance.

• Yamini Krishnamurti is related to Kuchipudi Dance.

Key Points 

• Yamini Krishnamurti is a Kuchipudi dancer.
• She also knows Bharatnatyam.
• A Passion For Dance is her autobiography.
• Kuchipudi:
  • It is the classical dance of Andhra Pradesh.
  • Kuchipudi derives its name from the Kuchipudi village of Andhra Pradesh.
  • Kuchipudi exhibits scenes from the Hindu Epics, legends and mythological tales through a combination of music, dance and acting.
  • Like other classical dances, Kuchipudi also comprises pure dance, mime and histrionics but it is the use of speech that distinguishes Kuchipudi’s presentation as dance-drama.
  • ‘At times, even though the dramatic situation did not demand, solo dancing was being presented to punctuate the presentation and to enhance the appeal. One such number is tarangam inspired by the Krishna-Leela tarangini of Teerthanarayana Yogi.
  • There are now two forms of Kuchipudi
    • The traditional musical dance drama 
    • The solo dance.
• Bharatnatyam is the classical dance of Tamil Nadu.

The correct answer is Al2O3.

Key Points

•  Al2O3  reacts with acids and bases.
  • Aluminum oxide (Al2O3) is an amphoteric substance.
  • The amphoteric substance is a substance that can react with both acids and bases usually to produce salt and water.
  • Aluminium oxide therefore can react with both acids as well as bases. We will take the example of its reaction with hydrochloric acid (strong acid) and sodium hydroxide (strong base).
  • When mixed with these two compounds aluminium oxide either acts like  acid with a base and a base with an acid.

Additional Information

• Al₂O₃ + 6 HCl → 2 AlCl₃ + 3 H₂O (acts like a base)
• Al2O3 + 2 NaOH + 3 H₂O → 2 NaAl(OH)₄ (sodium aluminate) (acts like an acid)
• On reacting Al2O3 with HCl, we get Aluminium Chloride as the salt and water as a by-product.
  • Likewise, the reaction between NaOH ( Strong Base) and Al₂O₃ results in the formation of Sodium Aluminate as salt and water.

The correct answer is ALGORITHM.

Key Points

• An algorithm is a specific procedure for solving a well-defined computational problem.
• The development and analysis of algorithms are fundamental to all aspects of Computer Science like AI, databases, graphics, networking, OS, etc.
• Algorithm development is more than just programming.
  • It requires an understanding of the alternatives available for solving a computational problem.
  • It includes the hardware, networking, programming language, and performance constraints that accompany any particular solution.

Additional Information

• An official language comprising a collection of instructions that produce different kinds of output is a programming language.
• In computer science, programming languages are used to implement algorithms.
• Most of the languages of programming consist of computer instructions.