Multiple choice

Consider the following statements :

  1. In climacteric fruits, ethylene stimulates its own production.
  2. Gibberellin present in a healthy stem cuases some of the new cells to differentiate as phloem.
  3. Loss of turgor in leaves stimulates the productions of abscisic acid Which of the statements given above are correct ?

  1. 1 and 2 only

  2. 2 and 3 only

  3. 1 and 3 only

  4. 1,2 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Climacteric fruits show autocatalytic ethylene production where ethylene stimulates its own biosynthesis. Gibberellins can cause phloem differentiation in stem tissue. Abscisic acid (ABA) production is triggered by water stress and loss of turgor pressure in guard cells. All three statements are physiologically accurate.

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