There's a minimum word limit that has to be met at all costs.
In Writing Task 1 write within 160 - 180.
In Writing Task 2 write within 260 - 280.
Exceeding the range would result in a penalty.
Cohesion and Coherence
Spend a few minutes planning your IELTS writing. Paragraphs give structure to a piece of
writing. A simple recipe for effective paragraphs - I-E-E (idea, explain, examples).
Don't over-use linking words or phrases or use inappropriately - this could become
confusing or irritating for the reader.
Don't always use linking words at the beginning of sentences - show more variety.
Cohesion does not only come from linking devices, there are other methods of creating
cohesion, one of them being substitution.
Express one idea per sentence. Do not write lengthy sentences.
Concise sentences along with cohesion would automatically display Coherence.