Question

describe the drainage system of Peninsular India under two categories:
a )river falling into the Arabian Sea.
b) River falling into the Bay of Bengal.

Answer 1

there are two types of rivers
West flowers
East flowers

1)they flow into the Arabian Sea like Narmada and tapi

2)they flow into bay of Bengal like ganga yamuna godavari Krishna etc.

Answer 2

Drainage system of the peninsular rivers in India:

a) Rivers falling into the Arabian Sea:

• Rivers like Narmada, Tapi, Luni, Sabarmati, Mahi, etc., drain into the Arabian Sea.
• Most of these rivers originate in western ghats and Vindhyas. These rivers are seasonal and flow to their fullest only for a few months of the year.
• These rivers flow to the zenith in the months of monsoon as rains are there are major source of water.  

b) Rivers falling into the Bay of Bengal:

• Rivers like Ganga, Yamuna, Godavari, Krishna, etc., drain into the Bay of Bengal.

• These rivers are perennial in nature and flow throughout the year.

• The agriculture in northern and eastern India depends on these rivers.

• The melting snow from the Himalayas is the major source of water for these rivers.  

To know more:

Major events that shaped peninsular drainage in india

https://brainly.in/question/13484929