11 Questions
What is a key characteristic of a hormone?
Transported in the plant
Why are inorganic ions like K+ and Ca+ not considered hormones?
They do not cause important responses
How do plant hormones differ from animal hormones according to recent studies?
They do not fit the model of animal hormones
Which substance, although synthesized and translocated by plants, is not classified as a hormone?
Sucrose
What is a common feature of most plant physiological responses?
Combined effects of several hormones
What term do many plant physiologists prefer to use instead of plant hormones?
Plant growth regulators
Who is credited with the discovery of auxin as the first plant hormone?
Charles Darwin
What is the role of auxin in plants?
Stimulation of plant cell elongation
Which experiment led to the conclusion that a spreading substance aids plant growth towards light?
Went's demonstration with coleoptiles in 1926
Which phenomenon involves directional growth in response to gravity?
Gravitropism
How does auxin concentration affect growth in response to gravitropism?
Mediates changes in growth direction based on gravity
Test your knowledge on the concept of hormones, their function, synthesis, and physiological responses in organisms. Explore the similarities and differences between animal hormones and plant hormones.
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