Question

Given below are two statements:
Assertion (A): All continents were united together in the past.
Reason (R): The Gangamopteris and Glossopteris flora have been found on all the southern continents.

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is not the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Hint:

Glossopteris fossil flora is important evidence for continental drift and Gondwana connection.

Answer 1

The Correct Option is A

Concept:
Continental drift theory states that continents were once joined together and later drifted apart.

Step 1: Check Assertion.
The concept of supercontinents suggests that continents were joined together in the geological past. \[ A \text{ is correct} \]

Step 2: Check Reason.
Glossopteris and Gangamopteris flora are found on southern continents such as India, Africa, Australia, Antarctica and South America. \[ R \text{ is correct} \]

Step 3: Check explanation.
The occurrence of similar fossil flora on separated continents supports the idea that they were once connected. \[ R \text{ correctly explains } A \] \[ \therefore \text{Correct Answer is (A)} \]