Mdcat-past-papers - DUHS - Biology Quiz

221. Which part of brain is responsible for higher cognitive functions such as thinking, reasoning and problem solving?

Medulla oblongata
Cerebellum
Cerebrum
Hypothalamus

222. The hypothalamus produces the signalling molecule like:

Granzyme
Pyrogen
Spermin
Prostaglandin

223. The number of spinal nerves that originates from the spinal cord:

24 nerves
48 nerves
40 nerves
62 nerves

224. Which of the following helps in long term memory in humans?

Cerebrum
Cerebellum
Medulla
Hippocampus

225. The human brain is different from animal's brain due to:

The cerebral cortex of the animal's brain is more developed
The cerebral cortex is absent in the human brain
Cerebral cortex is absent in all animal's brain
The cerebral cortex of the human brain is more developed

226. Nicotine stimulates heart rate, blood pressure and muscular activity because:

It has excitatory effects on acetylcholine receptors
It has inhibitory effects on acetylcholine receptors
It inhibits the synapse between
Causing drop in the heart disease

227. Testes developed inside the abdomen. In which of the following structure do they lie before pintly:

Sac
Scrotum
Pouch
Vesicle

228. After ovulation Graafian follicle converts into:

Corpus callosum
Corpus albicans
Corpus luteum
Corpus atresia

229. Fertilization of ovum takes place in rabbit, man and other placental mammals in:

Ovary
Uterus
Cervix
Fallopian tube

230. Corpus luteum in mammals occurs in:

Brain & connects the two cerebral hemispheres
Ovaries & produces progesterone hormones
Heart & initiate arterial connection
Skin & acts as a pain receptor

231. When Mendel crossed together two contrasting homozygous individuals, the phenotype of the hybrid in F1 cross appeared to be that of:

recessive parent
Dominant parent
Indifferent
None of Above

232. In a dihybrid cross is made between pisum sativum plants producing yellow/ Round and Green Wrinkled seeds. Results of F2 generation show: Yellow/ Round =9/16 , Yellow Wrinkled = 3/16 , Green/Round =3/16 & Green Wrinkled =1/16. Which ratios of these results confirm independent assortment had taken place?

16-Sep
16-Mar
16-Jan
3/16 & 3/16

233. Evolution is the transformation & mode of existence of an organism in such manner that the descendants differ from their ancestor, according to?

Weismann
Darwin
Lamark
Zimmermann

234. All the given entities are created by God, the theory named as:

Theory of natural selection
Theory of inheritance of acquired characters
Theory of survival of fittest
Theory of special creation

235. Presence of remnant of pelvic girdle in whale and snake although they never have legs shows evidence from:

Biochemical evidence
Comparative anatomy
Vestigial organs
Paleontological evidence

236. The artificial selection in breeding provides a strong evidence for evolution. What does this term means?

Vestigial organs
Domestication
Mutation
Homology

237. Use and disuse of the postulate of organs was given by:

Darwin
Weismann
Wallace
Lamarck