MCQOPTIONS
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MCQOPTIONS
This section includes 517 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
All are the features of invertebrates, but, |
| A. | well coordinated activities |
| B. | quick response to the environment |
| C. | efficient sensitivity |
| D. | a well developed brain |
| Answer» E. | |
| 152. |
Backflow of blood into the atria is prevented through |
| A. | bicuspid valves |
| B. | tricuspid valves |
| C. | mitral valve and the chordae tendineae |
| D. | semi lunar valves |
| Answer» D. semi lunar valves | |
| 153. |
Pulling hand away from hot iron is an example of |
| A. | effective nervous system |
| B. | reflex action |
| C. | voluntary actions |
| D. | involuntary actions |
| Answer» C. voluntary actions | |
| 154. |
Encapsulated ending which lie in papillae which extend into ridges of finger prints are |
| A. | Pacinian Corpuscles |
| B. | free end corpuscles |
| C. | Meissner's Corpuscles |
| D. | cellular corpuscles |
| Answer» D. cellular corpuscles | |
| 155. |
Somatotrophin releasing factor is secreted from hypothalamus |
| A. | in early childhood |
| B. | till puberty |
| C. | through out the life |
| D. | in old age |
| Answer» D. in old age | |
| 156. |
Blood vessels which carry blood from arteriole to venule is |
| A. | endothelium |
| B. | arteries |
| C. | veins |
| D. | capillaries |
| Answer» E. | |
| 157. |
Corpuscles situated deep in body and receive deep pressure stimulus, are |
| A. | Pacinian Corpuscles |
| B. | Meissner's corpuscles |
| C. | cellular corpuscles |
| D. | sensory corpuscles |
| Answer» B. Meissner's corpuscles | |
| 158. |
Sweat gland is an example of |
| A. | endocrine gland |
| B. | exocrine gland |
| C. | ectocrine glands |
| D. | hypocrine glands |
| Answer» C. ectocrine glands | |
| 159. |
Nicotine mimics action of |
| A. | oxytocin |
| B. | testosterone |
| C. | cortisone |
| D. | acetylcholine |
| Answer» E. | |
| 160. |
Pulmonary veins carry blood from lungs to |
| A. | left atrium |
| B. | right atrium |
| C. | left ventricle |
| D. | right ventricle |
| Answer» B. right atrium | |
| 161. |
Tadpole larva of frog does not metamorphose, instead grows to a large sized tadpole due to deficiency of |
| A. | parathyroid |
| B. | thyroxine |
| C. | oestrogen |
| D. | adrenals |
| Answer» C. oestrogen | |
| 162. |
Melanophore stimulating hormone darkens skin by stimulating |
| A. | melanocytes |
| B. | monocytes |
| C. | erythrocytes |
| D. | lymphocytes |
| Answer» B. monocytes | |
| 163. |
White matter in the nervous system forms the |
| A. | nerve fibers |
| B. | central part of the brain |
| C. | outer part of the brain |
| D. | skull |
| Answer» C. outer part of the brain | |
| 164. |
Sensory neuron is not needed in |
| A. | voluntary action |
| B. | conditioned reflex action |
| C. | unconditioned reflex action |
| D. | touch and taste |
| Answer» B. conditioned reflex action | |
| 165. |
Splitting of Adenosine tri-phosphate (ATP) is done by an associated enzyme called |
| A. | ATPase |
| B. | Catalase |
| C. | Lipase |
| D. | amylase |
| Answer» B. Catalase | |
| 166. |
Vagus nerve is present in |
| A. | sympathetic nervous system |
| B. | para-sympathetic nervous system |
| C. | somatic nervous system |
| D. | Both a and b |
| Answer» C. somatic nervous system | |
| 167. |
Insulin and glucagon belong to |
| A. | amino acid and derivatives |
| B. | proteins |
| C. | polypeptides |
| D. | steroids |
| Answer» C. polypeptides | |
| 168. |
Pairs of spinal nerves in man can be as many as |
| A. | 21 |
| B. | 31 |
| C. | 41 |
| D. | 51 |
| Answer» C. 41 | |
| 169. |
In context of coordination system, Cretinism results due to |
| A. | excess of adrenaline |
| B. | lesser thyroxin |
| C. | excess insulin |
| D. | lesser keratin |
| Answer» C. excess insulin | |
| 170. |
In order to respond to a stimulus, effector neuron carries impulse to effector, which transmits it to |
| A. | sieve tubes |
| B. | fissures |
| C. | grooves |
| D. | motor end plates |
| Answer» E. | |
| 171. |
Nerve impulse transmitted away from the cell body is through |
| A. | Dendron |
| B. | Axon |
| C. | Neuron |
| D. | Myelin sheath |
| Answer» C. Neuron | |
| 172. |
Autonomic nervous system controls |
| A. | voluntary movements |
| B. | reflex actions |
| C. | semi-voluntary movements |
| D. | involuntary movements |
| Answer» E. | |
| 173. |
Shedding of skin in insects larvae is known as |
| A. | metamorphosis |
| B. | moulting |
| C. | mentoring |
| D. | meningitis |
| Answer» C. mentoring | |
| 174. |
Below the cerebellum is |
| A. | hypothalamus |
| B. | pituitary gland |
| C. | Medulla Oblongata |
| D. | midbrain |
| Answer» D. midbrain | |
| 175. |
Feelings of sluggishness result due to |
| A. | meningitis |
| B. | improper functioning of mesenteric arteries |
| C. | myxedema |
| D. | improper functioning of adrenal glands |
| Answer» D. improper functioning of adrenal glands | |
| 176. |
Largest portion of brain is |
| A. | hypothalamus |
| B. | cerebellum |
| C. | thalamus |
| D. | cerebrum |
| Answer» E. | |
| 177. |
Effector neurons extend from spinal cord to the |
| A. | spinal nerve only |
| B. | ventral root only |
| C. | medulla oblongata |
| D. | spinal nerve and ventral root |
| Answer» E. | |
| 178. |
Shortest way by which impulses travel from the receptor to the effector is called |
| A. | synapse |
| B. | reflex action |
| C. | reflex arc |
| D. | voluntary response |
| Answer» D. voluntary response | |
| 179. |
Hypothyroidism refers to |
| A. | overactive thyroid gland |
| B. | underactive thyroid gland |
| C. | underactive testes |
| D. | overactive testes |
| Answer» C. underactive testes | |
| 180. |
Melanophore stimulating hormone (MSH) is secreted in higher animals during |
| A. | childhood |
| B. | puberty |
| C. | pregnancy |
| D. | sleep |
| Answer» D. sleep | |
| 181. |
In PNS, impulses from the receptors are taken to the |
| A. | grey matter |
| B. | white matter |
| C. | dorsal root ganglion |
| D. | spinal fibers |
| Answer» B. white matter | |
| 182. |
In diabetes, patient produces large amounts of urine that is |
| A. | very concentrated |
| B. | mild |
| C. | acidic |
| D. | very dilute |
| Answer» E. | |
| 183. |
Sensations are greatly motorized through |
| A. | cerebellum |
| B. | cerebrum |
| C. | hypothalamus |
| D. | pituitary gland |
| Answer» C. hypothalamus | |
| 184. |
In brain hypothalamus forms the |
| A. | walls of medulla oblongata |
| B. | floor of the cerebral hemispheres |
| C. | base of the cerebellum |
| D. | top of the medulla |
| Answer» C. base of the cerebellum | |
| 185. |
Right ventricle forces blood into the |
| A. | aortic arch |
| B. | pulmonary arch |
| C. | superior vena cava |
| D. | inferior vena cava |
| Answer» C. superior vena cava | |
| 186. |
In cardiac system, Aorta originates from the |
| A. | right side of the heart |
| B. | left side of the heart |
| C. | combination of capillaries |
| D. | combination of venule |
| Answer» C. combination of capillaries | |
| 187. |
From the right atrium, the blood flows into the |
| A. | left atrium |
| B. | right ventricle |
| C. | pulmonary artery |
| D. | pulmonary vein |
| Answer» C. pulmonary artery | |
| 188. |
Follicle stimulating hormone in females stimulates |
| A. | fat deposition |
| B. | secretion of oestrogen |
| C. | hair growth |
| D. | egg production |
| Answer» C. hair growth | |
| 189. |
Intermediate neurons are found within the |
| A. | Central Nervous System (CNS) |
| B. | Peripheral Nervous System (PNS) |
| C. | Superior Nervous System (SNS) |
| D. | Inferior Nervous System (INS) |
| Answer» B. Peripheral Nervous System (PNS) | |
| 190. |
Person suffering from epilepsy should avoid |
| A. | tea |
| B. | coffee |
| C. | alchohol |
| D. | fizzy drinks |
| Answer» D. fizzy drinks | |
| 191. |
Stimulus originally ineffective in producing specific response is called as |
| A. | reflex arc |
| B. | reflex action |
| C. | voluntary actions |
| D. | conditioned reflex action |
| Answer» E. | |
| 192. |
Failure to produce insulin leads to a condition called |
| A. | diabetes insipidus |
| B. | diabetes mellitus |
| C. | hypoglycaemia |
| D. | rickets |
| Answer» C. hypoglycaemia | |
| 193. |
Biorhythms showing periodicity of about 24 hrs. are called |
| A. | circadian rhythm |
| B. | circannual rhythm |
| C. | circbiannual rhythm |
| D. | regular rhythm |
| Answer» B. circannual rhythm | |
| 194. |
Nissl's granules are actually |
| A. | groups of endoplasmic reticulum (ER) |
| B. | Groups of golgi bodies |
| C. | groups of ribosomes |
| D. | groups of mitochondria |
| Answer» D. groups of mitochondria | |
| 195. |
Higher animals possess |
| A. | higher level of instincts |
| B. | higher level of learning |
| C. | higher level of kineses |
| D. | higher level of habituation |
| Answer» C. higher level of kineses | |
| 196. |
Gibberellins sometimes substitute for |
| A. | blue light |
| B. | red light |
| C. | green light |
| D. | yellow light |
| Answer» C. green light | |
| 197. |
Instincts are important for animals with |
| A. | no parental care |
| B. | long life span |
| C. | high parental care |
| D. | sedentary mode of life |
| Answer» B. long life span | |
| 198. |
Timing of any behavior results from a combination of effects of rhythymical internal process and |
| A. | one's genetic makeup |
| B. | timed events of the environment |
| C. | hormonal imbalances |
| D. | random change in environment |
| Answer» C. hormonal imbalances | |
| 199. |
Cable containing numerous nerve fibers, axons and dendrites is called a |
| A. | cord |
| B. | nerve |
| C. | neuron |
| D. | strand |
| Answer» C. neuron | |
| 200. |
Involuntary actions do not involve |
| A. | heartbeat |
| B. | exhalation |
| C. | inhalation |
| D. | passing urine |
| Answer» E. | |