MCQOPTIONS
Saved Bookmarks
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.
| 201. |
Pulmonary arch has all these features but that it |
| A. | gets divided into two arteries |
| B. | receives blood from right ventricle |
| C. | receives blood from right atrium |
| D. | has semi lunar valves |
| Answer» D. has semi lunar valves | |
| 202. |
Onset of epilepsy is usually before |
| A. | age 20 |
| B. | age 30 |
| C. | age 10 |
| D. | age 15 |
| Answer» C. age 10 | |
| 203. |
What is the structural and functional unit of brain |
| A. | nephron |
| B. | meninges |
| C. | neuron |
| D. | cerebrospinal fluid |
| Answer» D. cerebrospinal fluid | |
| 204. |
Wounded plants develop masses of amorphous material with very poor differentiation known as |
| A. | calluses |
| B. | galls |
| C. | nodes |
| D. | infection |
| Answer» B. galls | |
| 205. |
Excessive protein breakdown resulting in muscular and bone weakness is a symptom of |
| A. | addison's disease |
| B. | cushing's disease |
| C. | parkinson's disease |
| D. | alzheimer's disease |
| Answer» C. parkinson's disease | |
| 206. |
Purpose of endocrine glands is to secrete hormones |
| A. | inside the body |
| B. | outside the body |
| C. | over the body |
| D. | in the air |
| Answer» B. outside the body | |
| 207. |
Left ventricle forces blood into the |
| A. | aortic arch |
| B. | pulmonary arch |
| C. | superior vena cava |
| D. | inferior vena cava |
| Answer» B. pulmonary arch | |
| 208. |
Development of secondary male characteristics is caused by |
| A. | oestrogen |
| B. | androgens |
| C. | aldosterone |
| D. | steroids |
| Answer» C. aldosterone | |
| 209. |
Functions of relaying neurons in spinal cord does not include connecting |
| A. | receptor nerve fibers to brain |
| B. | brain to the effector neurons |
| C. | receptors to effector neurons |
| D. | white matter with grey matter |
| Answer» D. white matter with grey matter | |
| 210. |
Nissl's granules are present in |
| A. | cell body of neurons |
| B. | Dendron |
| C. | axon |
| D. | dendrites |
| Answer» B. Dendron | |
| 211. |
Long term effects are incurred in man due to imbalance of |
| A. | adrenaline |
| B. | thyroxin |
| C. | testosterone |
| D. | progestrone |
| Answer» D. progestrone | |
| 212. |
Spinal nerve divides into motor fibers which get connected to |
| A. | receptors |
| B. | optic lobes |
| C. | effectors |
| D. | sensors |
| Answer» D. sensors | |
| 213. |
Medulla, pons and cerebellum make up |
| A. | forebrain |
| B. | midbrain |
| C. | hindbrain |
| D. | future brain |
| Answer» D. future brain | |
| 214. |
Pulmonary veins carry |
| A. | red oxygenated blood |
| B. | bluish red deoxygenated blood |
| C. | deoxygenated blood from heart to the lungs |
| D. | oxygenated blood from lungs to heart |
| Answer» E. | |
| 215. |
Thyroid can be destroyed through |
| A. | radioactive iodine |
| B. | radioactive zinc |
| C. | radioactive carbon |
| D. | radioactive manganese |
| Answer» B. radioactive zinc | |
| 216. |
In vertebrates, hormones are produced by |
| A. | endocrine gland |
| B. | exocrine gland |
| C. | ectocrine glands |
| D. | hypocrine glands |
| Answer» B. exocrine gland | |
| 217. |
Jugular veins collect blood from |
| A. | head and neck |
| B. | lungs |
| C. | liver |
| D. | kidneys |
| Answer» B. lungs | |
| 218. |
A stalk that connects pituitary gland to brain is |
| A. | pituitary tube |
| B. | infundibulum |
| C. | ureter |
| D. | hypophysis cerebri |
| Answer» C. ureter | |
| 219. |
Antagonistic to gibberellins, flowering is promoted in short day plants by |
| A. | ethane |
| B. | abscisic acid |
| C. | cytokinins |
| D. | auxins |
| Answer» C. cytokinins | |
| 220. |
Organs which carry out actions or produce responses are |
| A. | receptors |
| B. | action organs |
| C. | effectors |
| D. | synapse |
| Answer» D. synapse | |
| 221. |
Primary function of sense organs include |
| A. | transmit impulses from receptors to forebrain |
| B. | perceive external stimuli |
| C. | interpret external stimuli |
| D. | produce reflex responses |
| Answer» C. interpret external stimuli | |
| 222. |
If biorhythms are of about 365 days, these are called |
| A. | circadian rhythm |
| B. | circannual rhythm |
| C. | diurnal rhythm |
| D. | periodic rhythm |
| Answer» C. diurnal rhythm | |
| 223. |
Pain receptors are more abundant than cold receptors |
| A. | 30 times |
| B. | 25 times |
| C. | 28 times |
| D. | 27 Times |
| Answer» E. | |
| 224. |
Irritability is synonym to |
| A. | adaptation |
| B. | seriousness |
| C. | producing off-springs |
| D. | sensitivity |
| Answer» E. | |
| 225. |
Fluid present between meninges for protection and cushioning of central nervous system is called |
| A. | interstitial fluid |
| B. | cerebrospinal fluid |
| C. | cytoplasmic fluid |
| D. | protoplasmic fluid |
| Answer» C. cytoplasmic fluid | |
| 226. |
Form of learning best known in chickens, ducks and geese is |
| A. | habituation |
| B. | conditioning |
| C. | instinct |
| D. | imprinting |
| Answer» E. | |
| 227. |
Cranial reflexes mostly occur in the |
| A. | muscular contraction |
| B. | head region |
| C. | spinal region |
| D. | hind limbs |
| Answer» C. spinal region | |
| 228. |
To remove need of picking fruit from tree crops |
| A. | ethane is sprayed |
| B. | cytokinin is sprayed |
| C. | abscisic acid is sprayed |
| D. | gibberellin is sprayed |
| Answer» D. gibberellin is sprayed | |
| 229. |
Outer portion of spinal cord is made up of |
| A. | pink matter |
| B. | white matter |
| C. | yellow matter |
| D. | gray matter |
| Answer» C. yellow matter | |
| 230. |
Bicuspid valve is found between |
| A. | left atrium and right atrium |
| B. | left atrium and right ventricle |
| C. | right atrium and right ventricle |
| D. | left atrium and left ventricle |
| Answer» E. | |
| 231. |
During tissue respiration, an increased oxidation of glucose occurs due to production of |
| A. | thiamine |
| B. | insulin |
| C. | glucagon |
| D. | adrenaline |
| Answer» C. glucagon | |
| 232. |
Intermediate/Relay is another name of |
| A. | associative neurons |
| B. | motor neurons |
| C. | sensory neurons |
| D. | neuroglia |
| Answer» B. motor neurons | |
| 233. |
Human brain is mainly divided into |
| A. | two parts |
| B. | three parts |
| C. | four parts |
| D. | five parts |
| Answer» C. four parts | |
| 234. |
Insulation to nerve fiber is provided through |
| A. | myelin sheath |
| B. | neurilemma |
| C. | node of Ranvier |
| D. | axon |
| Answer» B. neurilemma | |
| 235. |
Renal artery provides blood to |
| A. | liver |
| B. | intestines |
| C. | kidneys |
| D. | hind limbs |
| Answer» D. hind limbs | |
| 236. |
Active or action potential of neuron lasts for |
| A. | a minute |
| B. | a second |
| C. | some milli seconds |
| D. | a nano second |
| Answer» D. a nano second | |
| 237. |
Disease which may tend to run in families due to genetic disposition is |
| A. | parkinson's disease |
| B. | arthritis |
| C. | epilepsy |
| D. | alzheimer's disease |
| Answer» E. | |
| 238. |
During active membrane potential Na+ ions diffuse into neuron through |
| A. | active transport |
| B. | sodium bridges |
| C. | support proteins |
| D. | sodium gates |
| Answer» E. | |
| 239. |
All are wrong about spinal nerve, but |
| A. | contains only receptor neurons |
| B. | contains only effector neurons |
| C. | is attached dorsally to the medulla oblongata |
| D. | is a mixed nerve |
| Answer» E. | |
| 240. |
Back flow of blood from right ventricle to right atrium is prevented through |
| A. | semilunar valves |
| B. | mitral valves |
| C. | tricuspid valves |
| D. | median septum |
| Answer» D. median septum | |
| 241. |
Nerve impulse can be defined as |
| A. | a wave of chemical changes |
| B. | a wave of electrical changes |
| C. | a wave of electrochemical changes |
| D. | an internal stimulus |
| Answer» D. an internal stimulus | |
| 242. |
Control center of sensory areas like sight, speech, taste, smell and hearing is |
| A. | hypothalamus |
| B. | cerebellum |
| C. | cerebrum |
| D. | thalamus |
| Answer» D. thalamus | |
| 243. |
Central nervous system does not include |
| A. | Brain |
| B. | Vertebral Column |
| C. | Spinal nerves |
| D. | Cerebrum |
| Answer» D. Cerebrum | |
| 244. |
Pulmonary circulation links |
| A. | blood from pulmonary arteries to pulmonary veins |
| B. | blood from pulmonary veins to pulmonary arteries |
| C. | blood from lungs to heart |
| D. | blood in closed circulation system |
| Answer» B. blood from pulmonary veins to pulmonary arteries | |
| 245. |
Spinal cord and brain together form the |
| A. | peripheral nervous system |
| B. | Central nervous system |
| C. | white matter of spinal cord |
| D. | grey matter |
| Answer» C. white matter of spinal cord | |
| 246. |
Pulmonary arteries carry |
| A. | red oxygenated blood |
| B. | bluish red deoxygenated blood |
| C. | deoxygenated blood from heart to the lungs |
| D. | oxygenated blood from lungs to heart |
| Answer» D. oxygenated blood from lungs to heart | |
| 247. |
Behavioural modification involving application of insight or reasoning to a novel situation is |
| A. | latent learning |
| B. | imprinting |
| C. | insight learning |
| D. | conditioning |
| Answer» D. conditioning | |
| 248. |
When growth has mostly ceased after adolescence, hormone that continues to promote protein synthesis throughout body is |
| A. | thyroid stimulating hormone (TSH) |
| B. | somatotrophin hormone (STH) |
| C. | gonadotrophic hormone (GH) |
| D. | corticotrophic hormone |
| Answer» C. gonadotrophic hormone (GH) | |
| 249. |
Neuroglia makeup half of nervous system in |
| A. | higher animals |
| B. | bacteria |
| C. | plants |
| D. | bryophytes |
| Answer» B. bacteria | |
| 250. |
Vasopressin hormone belongs to family of |
| A. | amino acid and derivatives |
| B. | proteins |
| C. | polypeptides |
| D. | steroids |
| Answer» D. steroids | |