Attention quickly shifted towards a jubilant Kohli, who blew kisses at Root and mimed his opposite number's "mic drop" celebration from the one-day series.
He got a couple of reprieves early in his innings but his intent to scrap it out under overcast conditions with an incisive Sam Curran (4/74), wily James Anderson (2/41) and relentless Ben Stokes (2/73) asking probing questions, stood out.
The Indian captain's 149 from 225 balls - his first Test hundred on English soil - was an exhibition in marshalling the tail and frustrating the opposition, steering his side from a perilous 100 for five to 274 all out, a mere 13-run deficit for the tourists.
From round the wicket, he bowled left-hander Cook - England's all-time leading Test run-scorer - for 13 with an excellent ball that pitched on middle and hit the top of off stump.
Anderson bowled a five-over spell during which he tied down Kohli, while Stokes did the damage. The opening batsman of India, Shikhar Dhawan along with Murli Vijay added first fifty partnership of Indian innings.
Sorry, Elon Musk: NASA says plans to terraform Mars won't work
Mars is about to be the closest it's been to Earth since 2003, giving us Earthlings the best view of the Red Planet in 15 years. The local stargazers are invited for a camp to witness the Red Planet from 7 pm to 10 pm tonight at the Colombo Campus grounds.
Now England are playing their 1000th Test at Edgbaston in Birmingham under the captaincy of Joe Root against India.
His contest with Broad reflected that with the England man conceding just 5 runs off 15 balls for one dismissal - caught by Cook at first slip in the second Test.
Ashwin (4/60) registered his best figures in Test cricket across South Africa, England and Australia as India reduced England to 285 for nine on day one on Wednesday.
Ravichandran Ashwin shone for India, taking four wickets for 60 runs from his 25 overs.
Yorkshire Day suddenly fell flat for England at Edgbaston as Jonny Bairstow and Joe Root's high hopes were dashed against India. Even over the last 12 to 18 months, I have spent a lot of time back home playing club cricket and I've been working on simplifying my action a bit, (to) make sure that I get more body into the ball and try and create something in the air.
"It just happens to be the ball before I got out and suddenly there's a huge sort of hoo-ha about a pigeon".