Openers David Warner and Chris Rogers shared a 200-run opening stand to put Australia in control on day 1 and Arun said his bowlers have to be more consistency.
"It has been a mixed bag," said Arun. "We have to be lot more disciplined than we are at present. There have been occasions where we have been disciplined but I think the consistency is going to be the key.
Ishant Sharma was rested from this Test owing to a left-knee pain and as such the experience factor in the playing eleven was lacking.
When asked if this was a factor on a tough day and easy pitch, the coach replied, "We are a young side and we are in the process of rebuilding and learning. We have performed well so far and we have been very competitive in this series.
In a surprising move by new skipper Virat Kohli, Cheteshwar Pujara was left out of the playing eleven with both Rohit Sharma and Suresh Raina coming into the side. Shikhar Dhawan was also left out.
"You have got to look at the overall balance of the team before you decide on the combinations. A lot of thought has been given to that before deciding on the side. Pujara has been exceptional for us earlier," Arun said.
