Question Discussion & Solution

The correct answer is Cells of a tissue have similar Structure.

Explanation:

Cells: The cell is the basic structural, functional, and biological unit of all known organisms.

• There are different shapes of the cells.
• The size and shape of the cells might be different in different organism.
• Some cells have a nucleus (Eukaryotic cells) while the other does not have a defined nucleus (prokaryotic cells).

Tissues:  A tissue is a group of similar cells performing a specific function. These tissues further made organs and later organ system

⇒ The correct option in the above statements are - cells of tissue have a similar Structure.

The correct answer is Harmeet Desai.

• Harmeet Desai won the men's singles title at the International Table Tennis Federation Challenge Indonesia Open 2019 Table Tennis Tournament.

Key Points

• The tournament was held in Batam, Indonesia. 
• He also won the Commonwealth championship in July 2019 held in Cuttack, Odisha. 
• He defeated Amalraj Anthony of India.

Additional Information

• Table Tennis:
  • The first match of The Table Tennis World Championship was played in 1927.
  • Table Tennis Association of India was formed in 1938.
  • Terminologies used in Table Tennis are Volley, Late service, Half volley, Backhand, Drive spin, Topspin, Chop, etc.
  • Swaythling Cup, Corbitton Cup, Barna-Bellack Cup, and Ramanujan Trophy are related to table tennis.

The correct answer is Indicator.

Key Points

• Indicators are substances that show a change in colour when brought in contact with acids and bases.
• The most common indicator used in the laboratory is Litmus.
• Litmus is extracted from lichens.

Additional Information

• A promoter is a sequence of DNA needed to turn a gene on or off.
• A neutralizer is a substance used in the neutralization of acidic water.
• Neutralization is a chemical reaction in which acid and a base react quantitatively with each other to form water and salt.
• A catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the reaction.

The correct answer is Khejri.

Key Points
Khejri:

• It is known as Kalp Vriksha of desert.
• Prosopis cineraria is the scientific name.
• It was declared a state tree in the year 1983.
• It has a nitrogen-fixing tree which enhances the fertility of the soil.
• In 1988, the Indian Postal Department issued a Postal Stamp of paisa 60 on Khejri. 
• Khejri trees are found in the tropical thorny forest.

• In 1837, Charles Babbage proposed the first general mechanical computer, the Analytical Engine; The Analytical Engine contained an ALU (Arithmetic Logic Unit), basic flow control, punch cards, and integrated memory
• Charles Babbage is credited with inventing the first mechanical computer that eventually led to more complex electronic designs, though all the essential ideas of modern computers are to be found in Babbage's analytical engine; Hence regarded as the father of computer science
• Blaise Pascal (1623 – 1662) was a French mathematician, physicist, inventor, writer and Catholic theologian
• John Napier (1550 – 1617) was a Scottish landowner known as a mathematician, physicist, and astronomer; He is best known as the discoverer of logarithms