261. Dorsal root of spinal nerves contain only __________ ?
A. Effectors neurons
B. Receptor neurons
C. Stimulators
D. Detector neurons

262. Study of interaction of living organisms with other organisms and their environment relates with ___________ ?
A. Botany
B. Ecology
C. Social biology
D. Pharmacology

263. __________is a condition in which there is an absence of oxygen supply to an organ’s tissues?
A. Anoxia
B. Anorexia
C. Hypoxia
D. Enuresis

264. Virus is__________?
A. unicellular
B. multicellular
C. acellular
D. none of these

265. Term the time during which an organism is present in the body before causing disease ?
A. Rest period
B. Incubation period
C. Sleeping period
D. Incubation time

266. Insects responsible for transmitting diseases are called___________?
A. Drones
B. Vectors
C. Hybrids
D. None of these

267. The first cloned animal was____________?
A. Goat
B. Cow
C. Rat
D. Sheep

268. Genetic information carriers is/are____________?
A. DNA
B. Chromosomes
C. Gene
D. Nucleus

269. The number carpels in our feet is__________?
A. 7
B. 14
C. 16
D. 0

270. Oxygen is the production of____________?
A. Mitochonderia
B. Chloroplast
C. Peroxisomes
D. Both A & B

NOTE
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