Plant Growth an...

Consider the following statements regarding growth movements in plants.
a. Growth movements in flowering plants are always induced by external stimuli such as light and gravity.
b. Differential growth of cells in different parts of the affected organ is responsible for growth movement.
c. Growth movements are very slow and can be observed only through timelapse photography.
Of these statements.

Assertion (A): Tissues removed from crown gall tumours can be grown in culture without the addition of auxin and cytokinin.
Reason (R): The bacterial plasmid contains the genes for the synthesis of plant auxin and cytokinin.

What prevents over-ripening of banana and browning of cut fruits?

Which one of the following generally acts as an antagonist to gibberellins?

Hormone that is associated with retaining the chloroplast chlorophyll is ?

The activity of alpha-amylase in the endosperm of barley plants is induced by _____________.

The living differentiated cell which have lost capacity to divide can regain capacity of division under certain conditions. This phenomenon is called

The plant hormone which promotes parthenocarpy (formation of seedless fruit) is

Which of the following statements are correct?
a. Gibberellins can substitute light treatment
b. Gibberellins can convert biennials into annuals
c. Gibberellins favour flowering in long day plants
c. Gibberellins induce flowering in short day plants.
Select the correct answer.

The formation of gibberellins is necessary during the germination of barley seeds for the synthesis and secretion of hydrolase's. The gibberellins is formed in the _____________.