meaning of Tamil Lyrics

[jaaze]

come on, guess, ayyarettu ... randakka randakka?

ayyarettu pallukkaari-- it's actually IR 8 pallu
IR 8 - rice


//n 1962, Dr. Peter Jennings made 38 crosses of various varieties at IRRI. The eighth was between a Chinese dwarf variety known as Dee-geo-woo-gen (DGWG) and a tall variety from Indonesia, Peta. This eighth cross was promising, but only 130 seeds were produced. How those 130 seeds became the famous IR8 variety was a fascinating process –
The 130 seeds were planted in pots to produce the first generation (F1) of plants. All were tall.
The F1 seeds were planted and produced about 10,000 second-generation (F2) plants. One-quarter of those plants were dwarf. That meant that dwarfism was controlled by a single gene in the DGWG variety, making the job of producing a commercial variety a lot easier. Dr. Jennings was so excited, he cabled the good news to Beachell in Texas. "That's when we knew we had it!" Beachell recalled later. It was so exciting that IRRI was able to recruit Beachell to join them in 1963 and Dr. Jennings left to pursue other studies.
All of the tall plants from the F2 generation were discarded, and the short plants were planted to become the F3 generation.
From the F3 plants, Beachell used his plant judging skills to select 298 of the best individual plants. Seeds from each of those plants were planted in individual "pedigree rows" to produce the fourth (F4) generation.
In that F4 generation, Beachell again selected the best individual plants. In row 288, the third plant in looked the best to him. He dubbed it IR8-288-3 and this F5 plant became the source for the revolutionary variety that became known simply as IR8.//

You might have heard arisi pola pallu, here the hero describes just that.

Randakka- Rendu akka

The heroine warns her lover that she has 2 sisters and if you are going to marry me you would have to endure the sister-in-laws' torture too

Simple.