16 Questions
What is the unique characteristic of plant growth mentioned in the text?
It is due to the presence of meristems
Which type of growth involves new cells being continually added to the plant body by the activity of the meristem?
Open form of growth
What contributes to the elongation of plants along their axis?
Root apical meristem
In which type of plants do lateral meristems cause an increase in the girth of the organs?
Dicotyledonous plants
What is the role of ethylene in root growth?
Promoting root hair formation
How does ethephon affect fruit ripening in tomatoes and apples?
It hastens fruit ripening
What is the primary role of abscisic acid (ABA) in seed development?
Inducing dormancy to withstand unfavorable conditions
What is the effect of ABA on stomata?
It stimulates stomatal closure
What kind of growth is exemplified by a root elongating at a constant rate?
Linear growth
What does the sigmoid curve represent in the context of growth?
Stationary phase
Which phase of growth is characterized by rapid increase at an exponential rate?
Log phase
What type of cell division leads to one daughter cell continuing to divide while the other differentiates and matures?
Mitotic cell division
What is the main use of gibberellins in the brewing industry?
Speeding up the malting process
What is the effect of spraying sugarcane crops with gibberellins?
Increasing stem length and yield
What is the primary effect of cytokinins on plants?
Having specific effects on cytokinesis
Which plant response is NOT attributed to gibberellins?
Promoting bolting in beet and cabbages
Test your knowledge about the effects of gibberellic acid (GA3) on plant growth and development. Explore the physiological responses and uses of gibberellins in plants, including their impact on fruit elongation and branching.
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