Consider the following statements and choose the correct answer: 1. Sieve cells are present in all groups of plants 2. Transverse position of end walls of sieve tubes is a primitive feature whereas their oblique or inclined position is an advanced condition 3. Restriction of sieve areas on the end wall is a primitive condition whereas their presence on end wall as well as radial wall is an advanced condition 4. The sieve plates with larger sieve pores are advanced