Tree and Graph Data Structures

The video tutorial introduces computational thinking for class 9 students, focusing on data structures. It revisits previously learned structures like lists and stacks and introduces trees and graphs. The tutorial explains the hierarchical nature of trees, their components, and real-world applications. It also covers graph structures, their complexity, and practical uses. The video concludes with a comparison of trees and graphs, highlighting their differences in structure and application.

What are the two new data structures introduced in the class 9 curriculum?

• Queue and Array

• Heap and Hash Table

• List and Stack

• Tree and Graph

Why is a tree considered a non-linear data structure?

• Because it is implemented using loops

• Because it has a hierarchical structure

• Because it stores data in a sequential manner

• Because it uses arrays

In a tree data structure, what is a 'leaf node'?

• A node with multiple children

• A node with multiple parents

• A node with no parent

• A node with no children

Which of the following is NOT a real-life application of tree data structures?

• Indexing databases

• Calculating arithmetic operations

• Analyzing decision trees

• Developing games

What is a common use of graph data structures?

• Solving complex programming problems

• Implementing simple algorithms

• Storing sequential data

• Representing hierarchical data

In a graph, what is an 'edge'?

• A node with multiple children

• A node with a single parent

• A line connecting two nodes

• A node with no connections

Which of the following is an example of a graph application?

• Binary search trees

• Memory management

• Sorting algorithms

• Google Maps

How does a graph differ from a tree in terms of connections?

• Graphs allow multiple connections between nodes

• Graphs are always acyclic

• Graphs have a hierarchical structure

• Graphs have a single root node

What is a key characteristic of a tree that is not present in a graph?

• Multiple root nodes

• Hierarchical parent-child relationships

• Cyclic paths

• Unrestricted node connections

Which data structure allows for cyclic paths?

• Tree

• Array

• Graph

• Stack