Science
Control and Coordination
Practice questions
Why do animals need both nervous and hormonal control?Which option correctly states the limitation of coordination in plants?In an experiment a plant was kept horizontal. After some time the root bent downward and the stem bent upward. What combined idea does this prove?A plant shows normal phototropism but the pollen tube does not grow towards the ovule. Which mechanism may be specifically affected?Which option shows the complete process of control and coordination most correctly?If the sensory nerve is damaged, what will happen to reflex action after touching a hot object?Which process will be affected first if chemical signals at a synapse stop?A student says that the brain is not involved at all in reflex action. What is the correct scientific correction?Which statement correctly differentiates the roles of dendrite and axon in a neuron?If a person’s cerebellum is affected, which combined effect is most likely?Which functions are most likely to be at risk if the medulla is damaged?Which pair is most correct for protection of the brain and spinal cord?If cerebrospinal fluid is absent, what will be the effect on brain protection?What is the combined meaning of positive geotropism and negative phototropism in roots?Root growing towards water and a pollen tube growing towards an ovule are examples of what, respectively?Why is folding of a Mimosa leaf on touch different from phototropism?In plants, what mainly works instead of a nervous system for control and coordination?Why can the stem and root respond differently in phototropism?Which statement best shows the idea of stimulus and response?If a person has low thyroxine level which process can be affected?