biology MCQs – Page 14

Practise multiple-choice questions from biology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

biology Mcqs
261. Triglyceride is also known as_____________?
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A. All of these

B. Neutral lipid

C. Natural lipid

D. Neutral wax

262. The greatest diversity of animals in the lake is found in which one of the following zones?
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A. Littoral zone

B. Limmnetic zone

C. Profundal zone

D. None of these

263. Which one is an organic compound_____________?
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A. Lipids

B. HCI

C. Water

D. CO2

264. Organisms of which of the following kingdom have absorptive mode of nutrition______________?
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A. Protoctista

B. Animalia

C. Prokaryotae

D. Fungi
265. Which of the following statement is incorrect about RNA_________________?
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A. It may be folded back on itself to give double helical characteristics.

B. The pentose sugar in it is Ribose.

C. It contains Adenine Guanine Thymine and Cytosine

D. It is present in the nucleoli

266. The structure which has been formed or modified from gill pouches in humans is___________?
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A. Gills

B. Eustachian tube

C. Lungs

D. Middle ear

267. Strengthening material of prokaryotic cell wall is__________?
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A. Chitin

B. Cellulose

C. Peptidoglycan or Murein.

D. Inorganic salts silica waxes and ligin

268. Which one of the following is correct sequence of stages of prophase 1 of meiosis
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A. Leptotene zygotene pachytene diplotene diakinesis

B. Zygotene leptotene pachytene diplotene diakinesis

C. Diakinesis diplotene pachytene leptotene zygotene

D. Pachytene leptotene diplotene zygotene diakinesis

269. Pick the odd one out
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A. Psilophyton

B. Psilotum

C. Rhynia

D. Cooksonia

270. In golgi apparatus the maturing face is____________?
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A. Concave

B. Biconcave

C. Convex

D. Spherical

271. Which one is abundant in animals___________?
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A. Glycogen

B. Cellulose

C. None of these

D. Starch

272. Excessive increase in temperature of medium causes the enzyme molecule to____________?
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A. Denatured

B. Unaffected

C. Activate

D. None of these

273. Sebum produced from sebaceous glands in a mammal helps in___________?
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A. Temperature regulation

B. Excretion

C. Protection against micro organisms

D. All of these

274. Cn(H2O)n. is a general formula of_____________?
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A. Carbohydrates

B. Monosaccharides

C. Ploysacharides

D. Oligosaccharides

275. Cellular digestion is associated with which organelle__________?
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A. Golgi bodies

B. Mitochondria

C. Plastids

D. Lysosomes
276. The first layer of cell wall which is formed is___________?
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A. Secondary wall

B. All of these

C. Middle lamella

D. Primary wall
277. Mycoplasmas have been included in bacteria because:
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A. Do not have a cell wall

B. Lack membrane bounded organelles

C. Reproduce by binary fission

D. Are heterotrophic

278. Whone is not the function of endoplasmic reticulum?
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A. Transport of material

B. Synthesis of conjugated molecules

C. Nerve impulse conduction

D. Mechanical support

279. Starch cellulose and glaycogen yield ___________ on complete hydrolysis?
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A. Glucose

B. Sucrose

C. Fructose

D. Maltose

280. The first stage of development in which a cavity appears is the__________?
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A. Morula

B. Gastrula

C. Balastula

D. Neurula