Nervous system, reflex action, hormones in animals and plants.
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Q1 · Control and Coordination · EASY
A student accidentally touches a hot plate and immediately withdraws his hand. Which of the following statements correctly explains this reflex action?
Q2 · Control and Coordination · MEDIUM
A farmer notices that his crop plants grow taller on the shaded side than on the side exposed to sunlight, causing them to bend towards the light. Which plant hormone is primarily responsible for this response, and what is its mechanism of action?
Q3 · Control and Coordination · HARD
A 35-year-old woman shows symptoms of weight gain, slow heart rate, feeling cold, and fatigue. Blood tests reveal low levels of T3 and T4 hormones but elevated TSH levels. Based on this clinical picture, which of the following best explains the underlying condition and the body's compensatory response?
Q4 · Control and Coordination · MEDIUM
Which plant hormone is responsible for inhibiting growth and causing wilting of leaves during water stress conditions?
Q5 · Control and Coordination · HARD
A person accidentally touches a hot object and immediately withdraws their hand. This rapid response is an example of a reflex action. Which component of the nervous system coordinates this reflex arc?