When does germination begin second stage?

Answer 1

# Water enters the seed through a hole in the seed coat called the micropyle.

# Water moves into the tissues and cells by imbibition and osmosis .

# The seed swells and the seed coat bursts.

# Water activates gibberelline, the hormone needed for breaking the dormancy of the seed.

# Gibberelline activates amylase which hydrolyses starch to maltose, and maltose is then hydrolyzed by maltase into glucose.

# Glucose is mobilized (transported) to the embryo .

# The embryo absorbs glucose and uses it for respiration (oxygen is needed in this process).

# Cell division, growth and elongation occur in the embryo . The radicle starts growing downwards into a root and the plumule starts growing upwards into a shoot.

# The nutrients needed for growth are all supplied by the food stored in the cotyledons.

# As the nutrients in the cotyledons are consumed and exhausted, the first leaves start to appear and the plant starts to photosynthesize and make its own food.

# When photosynthesis starts, the seedling absorbs water and minerals from the soil, carbon dioxide from the atmosphere and sunlight.

Answer 2

Germination begins when the pistil reaches itself

Answer 3

Germination begins when the seed takes in water.

Answer 4

Seed germination ends after establishing the seedling on its seedbed in the soil, pot or whatsoever space is provided.