Science Class 8th
161. Motor neuron carry nerve impulse to part of body called
A. Hand
B. Skin
C. Receptor
D. Effector
162. Imediate and involuntory response to stimulus is called
A. Quick response
B. Special response
C. Nerve impulse
D. Reflex action
163. Which is true about reflex action
A. Reflex path
B. Reflex arc
C. Reflex way
D. All
164. Which is true about reflex action
A. Involuntary
B. Dose not involve brain
C. Involve spinal cord
D. All
165. Reflex action include which components
A. Inter neuron
B. Motor
C. Receptor
D. Effector and sensory neuron
E. All
166. People blink there eye how much in a minute
A. 15times
B. 16times
C. 20times
D. 10times
167. When we awake we blink approximately
A. 14400times a day
B. 17000times a day
C. 1000times a day
D. 16999times a day
168. Blinking is
A. Involuntary
B. Reflex action
C. Both.
D. None
169. Action performed under conscious control is
A. Voluntary
B. May be Voluntary
C. Involuntary
D. Automatic
170. Action performed unconsciously
A. Voluntary
B. Involuntary
C. Any may be
D. Not possible
171. Which is involuntary
A. Heart beat
B. Digestion
C. Blinking of eye
D. All
172. Process of removing waste from body is called
A. Excretion
B. Removal
C. Secretion
D. Both A and C
173.System responsible for secretion is
A. Excretory system
B. Secretory System
C. Both
D. None
174. Non solid wastes are removed through
A. Urine
B. Exhalation
C. Sweat
D. All
175. Excretory system consist of
A. One Pair of kidney
B. Urinary bladder
C. Two ureters
D. Urethra
E. All
176. Color of human kidney is
A. Dark brown
B. Red
C. Dark red
D. Light brown
177. Shape of human kidney is
A. Bean shape
B. Round
C. Cherry shaped
D. None
178. Kidney is present in
A. Thorax region
B. Abdominal region
C. Covering both above region
D. Side of thorax
179. The outer and inner surface of kidney are respectively
A. Convex & Concave
B. Concave & Convex
C. Bi-Concave
D. Bi-Convex
180. Tube which arise from kidney and enter urinary bladder is
A. Ureter
B. Urethra
C. Pipe
D. Vessel