Question

......... help in germination of seed .

Answer 1

Answer:

gibberlins

Explanation:

gibberlins breaks the seed dormancy and helps in the germination of the seed

Answer 2

Gibberellins helps in germination of seeds.

• Gibberellins have been isolated from immature seeds,roots, and shoot tips,young leaves and fungi .
• Gibberellins acid moves through xylem and phloem and unlike that of auxin,the movement is non-polar so they tend to affect the whole plant.
• Conditions necessary for germination:

1. External factor-water,oxygen,suitable temperature.
2. Internal factor-food,hormone,viability.