Question Discussion & Solution

Key Points

A binary tree is a tree data structure in which each node has at most two child nodes.

The number of subtrees of a node is called the degree of the node. In a binary tree, all nodes have degrees o, 1, and 2. 

The degree of a tree is the maximum degree of a node in the tree. A binary tree is of degree 2. The number of nodes of degree 2 in Tis "n-1".

Hence the correct answer is n-1.

According to the information given in the question, we can draw the following diagram.

Thus Anusha is 9 km towards east with respect to initial position.

Hence, the correct answer is "9 km, East".

The correct answer is Nitrification.

Key Points

• The process of conversion of ammonia into nitrate nitrogen is called nitrification.
• It is done in two steps- Nitrite formation, Nitrate formation.
• Nitrite formation- Ammonia are oxidized to nitrites by Nitrococcus, Nitrosomonas.

Additional Information

• The nitrogen cycle has four steps-
  • Nitrogen Fixation- Conversion of molecular nitrogen into the inorganic nitrogenous compound.
  • Ammonification- Conversion of the dead organic nitrogenous compound into ammonia.
  • Nitrification- Oxidation of ammonia into nitrates.
  • Denitrification- Nitrites or nitrates converts back into molecular nitrogen.

Explanation:

• Parenchyma, Sclerenchyma, and Collenchyma are the Simple Permanent Plant tissues.
• Xylem and Phloem are the Complex Permanent Plant tissue.
• Sclerenchyma: supporting tissue in higher plants.
• Parenchyma: makes up most of the cells within leaves, flowers, and fruits.
• Collenchyma: provides support, structure, tensile strength, and flexibility which helps the plant to bend.
• Xylem:
  • It is plant tissue that transports food water and other dissolved minerals from roots to other parts of the plant.
• Phloem:
  • The main function of the phloem is to transport food materials from the leaf to other parts of the plant.

The correct answer is Sri Lanka, Maldives.

Key Points

• The 15th edition of the Maldives, India, and Sri Lanka biennial trilateral exercise 'Dosti', which began in the Maldives on 20 November 2021, concluded on 24 November 2021.
• Indian Coast Guard vessels, the ICGS Vajra and ICGS Apoorva participated in the exercise from the Indian side.
• The year 2021 marked 30 years since the initiation of the exercise.
• Exercise Dosti was initiated in 1991, between the Indian and Maldives Coast Guard.
• Sri Lanka joined the exercise for the first time in 2012.

Additional Information

•  The Chief of the Naval Staff is Admiral R Hari Kumar.
• The headquarters of the Indian Navy is Integrated Defence Headquarters, Ministry of Defence, New Delhi.
• Below are the list of Exercises and Participating Nations: 

  Military Exercise	Participating Countries
  Ajeya Warrior	India and United Kingdom
  Sampriti	India and Bangladesh
  Vajra Prahar	India and US
  Garuda Shakti	India and Indonesia
  Surya Kiran	India and Nepal
  Hand in Hand Exercise	India and China