CH-17 Coordination & Control Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-17 Coordination & Control" Click on "Start Quiz" To Continue... 1. A cell or a group of cells specialized to detect chains in the environment and trigger impulses are known as: Effectors Receptors Suppressors Both B and C None 2. You dunk your head when a baseball is thrown toward your face as. You are responding to: An internal stimulus An external stimulus Hormones All of these None 3. If bio-rhythm occurs with a frequency of 24 hours, it is called: Cireadian rhythum Ccirea- annual rhythm Lunar rhythm All of choices are correct None 4. The influence of daily cycle of light and darkness on the Physiology and behaviour of an Organism is known as: Mechanical rhythm Chemoperiodism Photoperiodism Thigmotropism None 5. Cireadian rhythms are based on approximately a: 2 hour period 7 day period 24-hour period 365-day period None 6. Which of the following describes a plant response to heat stress: Production of heat shock proteins Closing of Stomata Production of abscisic acid Production of fructants None 7. In combination with auxin, it stimulates cells division in plants and determines the course of differentiation: Ethylene Gibberellins Abscisic acid Cytokinin None 8. IAA,NAA and GA are: International seed companies Plant pheromones Spray adjuvants Plant hormones None 9. Neurons which make up the nervous system, consist of: An axon 2 or more dendrites A cell body containing a nucleus All A,B and C None 10. Who connect different neurons together, send information between neurons. Through short dendrites and short axons? Sensory neurons Motor neurons Interneurons Neuroglia None 11. The very small gap between an axon sending a message and dendrite receiving the message is the: Axon Terminal Receptor Synapse Effector None 12. The neurons of CNS that form myelin sheath, provide nutrition and are involved in phagocytic activity are known as: Sensory neurons Mortar neurons Interneurons Neuroglia None 13. Which of the ions are most abundant on the inside and outside of the neuron add its resting potential? Potassium; sodium Sodium; potassium Calcium; phosphate Sulphate; potassium None 14. Influx of which iron causes depolarization of the membrane, as the first phase of the action potential? K⁺ Na⁺ K⁺ and Na⁺ Ca⁺ None 15. How many interneurons does the CNS contain approximately? 1 trillion 100 trillion 1 million 100 billion None 16. Which part of the brain is the seat of conscious activities? Limbic brain Brain stem Cerebral cortex Occipital None 17. When your finger accidentally gets caught in a door, the pain message is sent to your brain through: Mediola Oblongata Motor neuron Sensory receptors Caffeine None 18. In which portion of the spinal cord do the interneurons lie? Cervical enlargement Lumbar enlargement Gray matter White matter None 19. Which structures would not be innervated by the sympathetic nervous system? Skeletal muscles Glands Smooth muscles Cardiac muscles None 20. The centers for thermoregulation, osmoregulation are located in: Thalamus Hypothalamus Amygdala Hippoccampus None 21. Peripheral nervous system in man consists of: 31 spinal and 12 cranial nerve pairs 33 spinal and 12 cranial nerve pairs 12 spinal and 31 cranial nerve pairs 31 spinal and 31 cranial nerve pairs None 22. What kind of meissner corpuscle and pacinian corpuscle are the skin receptors? Free nerve Hot Cold Encapsulated nerve ending None 23. Nicotine: Reduces fatigue Raises blood pressure Increases alertness All of the choices are correct None 24. Calcium is released from born into the bloodstream due to the action of: ADH GinRH LH PTH None 25. This hormone would be at an increased level in a mother who is breast feeding: Thyroxine Prolactin Aldosterone Insulin None 26. As the sun comes up in the morning your blood level of what goes down and you wake up: Melatonin Cortisol Glucagon Adrenalin None 27. This hormone from the hypothalamus stimulates release of ACTH from the anterior pituitary: STHRRH TRH CRH ACTH None 28. Hormones that enter target cells and bind to receptors in the cytoplasm and then enter the nucleus are called: Steroid hormones Water soluble hormones Peptide hormones 2nd messengers None 29. A 30 years old male male complains of being over weight, sluggish in nature, hair loss, dry skin and intolerance of cold, he is suffering from: Cretinism Myxedema Addison disease Huntington disease None 30. A 'Skinner box' is used for experiments in: Operant conditioning Classical conditioning Migration Aggression None 31. A rat in a box learns to associate pressing a lever with obtaining food: Operant cconditioning Classical conditioning Imprinting Aggression None 32. Fixed Action Pattern [FAP] is stereotype behavior that is triggered by an external sensory stimulus as: Response chain Endogenous releaser Sign stimulus All A,B and C None 33. Which of the following is not a function of auxins? Promote stomatal opening Promote apical dominance and fruit growth Promote cell division in cambium Cause delay in leaf senescence None 34. Which of the following ions present in the nerve cells and surrounding fluid are the most important in conduction of nerve impulse? Na⁺ and K⁺ᵐ Na⁺ and Mg⁺⁺ K+ and Mg⁺⁺ Mg⁺⁺ and Ca⁺⁺ None 35. Excessive secretion of somatotrophin releasing factor during early life leads to: Grave disease Epilepsy Alzheimer disease Acromegaly None 36. Insulin depresses blood glucose levels by: Increasing glycogen synthesis Increasing cell utilization of glucose Both A and B Stimulating conversion of glucose into lipids and proteins None 37. Who performed the experiment of conditioning the dogs to a secrete saliva on ringing of bells? Kphler Uexkull Pavlov Lorenz None 38. Mid-brain: 12 pairs Auditory Relay Centre Planaria Hydra None 39. Gastrin: Water retension by kidneys Sugar in urine Stomach Kinesis None 40. Reflex action: Milk production Muscles Follicle development Involuntary None 41. The path along which the olfactory receptors send their electrical message to the brain: Inhibitory signals Olfactory tract Receptor sites Taste buds None 42. The most basic function of the nervous system is: Stimulation Reception Conduction Inhibition None 43. Which of the following is most fundamental in the diverse function of every part of the entire nervous system? Peripheral nervous system Afferent Efferent Nervous impulse None 44. A neuron with its dendrites connected to another neuron and its Axon connected to an effector organ is: Sensory Motor Association Sympathetic None 45. A neuron with one axon and 25 dendrites would be: Unipolar Bipolar In the central nervous system only Multipolar None 46. The nervous system is involved in which of the following: Reception Secretion Stimulation All of the above None 47. A central nervous system neuron whose dendrite is connected with a higher part of the brain or spinal cord, and whose Axon is connected with a lower area is termed: Sensory Motor Afferent Sympathetic None 48. A central nervous neuron whose dendrites are connected with a sensory neuron and whose axon is connected with a motor neuron is termed: Sensory Motor Association Auxiliary None 49. Choose the pair of hormones that have antagonistic effects on blood sugar levels: Calcitonin and PTH Adrenalin and glucagon Glucagon and glucose ADH and aldosterone None 50. Excessive production of thyroid hormones by the thyroid gland: Is called hypothyroidism Can cause nervousness, irregular heartbeat and weight loss Can cause stunted growth and retardation in children Can cause a goiter None 1 out of 10 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up