Question Discussion & Solution

Concept-

Vestigial organs are the organs that once were useful in an animal's body millions of years ago, but now they are useless or very close to useless.

Key Points Human heart-

• The human heart is not vestigial as at present times it has its own functions in the human body.
• The human heart is an organ that pumps blood throughout the body.
• Heart pumps the blood through the vessels of the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.
• The tissues of the body need a constant supply of nutrition in order to be active which is performed by blood.

Additional Information Wisdom teeth

• Wisdom teeth are no longer totally necessary. Today, humans cook food to soften it, and we can cut and crush it with utensils.So at this time they are vestigial.
• Early humans needed to chew coarse, hearty foods, they required a broader jaw.
• Wisdom teeth grew in to give them more chewing power for this purpose.

Nictitating membrane of eye

• In humans, the nictitating membrane is the pink lump in the inner corner of the eyes which is known as the caruncula lacrimalis.
• In this structure, the remaining of the nictitating membrane are permanently folded into that corner and no longer functional.So it is vestigial.

Vermiform appendix

• The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm.
• Its function is to digest cellulose.

A matter is something that occupies space, has shape, mass and volume. It can be categorized in the following categories:

• Solid: Solids are those, whose molecules are bounded tightly, hence the distance between them is the least.
  • The molecules are fixed in a position.
  • It has definite shape as well as mass.
  • It has a high density.
  • In this, vibration is the least because of tightly bound molecules
• Liquid: In this particles are more loosely packed as compared to solids. It can flow.
• Gas: In this, the molecules have a great space between them. It has no definite shape and volume.
• Plasma: It is an ionized gas substance that has sufficient energy to provide free electrons from molecules.

The correct answer is F11.

• The F11 key can take our screen into and out of full-screen mode quickly and easily. 

​Important Points

• Function key
  • A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter to perform certain actions, a form of a soft key.

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• F11​
  • The Most simple use is the F11 key can take our screen into and out of full-screen mode quickly and easily. 
  • F11 key can be used by combined with Shift, Ctrl, Alt keys.
    • Some of the uses of the F11 key in MS Word.
      • SHIFT + F11 = Go to the previous field.
      • CTRL + F11 = Lock a field.
      • CTRL + SHIFT + F11 = Unlock a field.
      • ALT + F11 = Display Microsoft Visual Basic Code.
      • ALT + SHIFT + F11 = Display Microsoft Visual Studio Code.

​Additional Information

• F8
  • ​​We can access the menu by turning on your computer and pressing the F8 key before Windows starts.
• F9
  • F9 will refresh fields in Word and prompt Outlook to send and receive messages.
• F10
  • ​F10 activates the menu bar or Ribbon of an open application.
  • Shift + F10 is the same as right-clicking on a highlighted icon, file, or Internet link. 

The correct answer is binary.

Key Points

• Binary language is used by computers to process data.
• Binary code was invented by Gottfried Leibniz.
• A binary code is a two-symbol system that represents text, computer processor instructions, or any other data.
• The binary number system's "0" and "1" are frequently utilized as the two-symbol system.
• Each character, instruction, or other object is assigned a pattern of binary digits, commonly known as bits, by the binary code.

• A mistake is essentially any programmer action that later shows up as an incorrect result during program execution
• A programmer may commit a mistake in almost any development activity; For example, during coding a programmer might commit the mistake of not initializing a certain variable or might overlook the errors that might arise in some exceptional situations such as division by zero in an arithmetic operation, both these mistakes can lead to an incorrect result