Science
Control and Coordination
Practice questions
Why do nerve signals reach body parts through specific paths?How can growth of a root away from light and towards gravity be explained?Which option gives the correct pair of growth-based and non-growth-based movements in plants?Which option correctly matches control in animals and plants?What will happen if a medicine blocks chemical messages at the synapse?In which situation is increased secretion of adrenaline most expected?Which statement shows the correct relation between stimulus and response?Which option correctly matches a receptor and its stimulus?Why are control and coordination necessary for life processes?If the motor nerve from the spinal cord to the muscle is damaged why will hand withdrawal after touching a hot object be affected?Why are chemical messengers needed for transmission of a nerve signal at a synapse?If roots grow towards water but away from the direction of gravity in an experiment, what is the most suitable conclusion?On what basis are folding of Mimosa leaves and bending of a stem towards light different?Why is it useful for more blood to go towards muscles when adrenaline is secreted?What is the scientific reason for goitre due to iodine deficiency?On what basis is it appropriate to call the pituitary gland the master gland?If the cerebellum does not work properly why may a person find it difficult to walk in a straight line?Why can damage to the medulla become a serious threat to life?Hormones spread throughout the body in blood yet why do they act only on some organs?How are positive geotropism of root and negative geotropism of stem useful together for a plant?