Identify a, b, c and d in the given sentences.
1. Spraying sugarcane crop with …….. a ….. increases in the length of the stem, thus increasing the yield by as much as ….. b……. tonnes per acre.
2. ….. c. …….  does not occur naturally in plants.
3. Search for natural substances with cytokinins like activities led to the isolation of …… d  ….. from corn kernels and coconut milk.
 

• A

  a-auxins, b-10, c-NAA, d-zeatin

• B

  a-gibberellins, b-20, c-zeatin, d-kinetin

• C

  a-gibberellins, b-10, c-zeatin, d-kinetin

• D

  a-gibberellins, b-20, c-kinetin, d-zeatin