Top 1000+ Solved Biology (GK) MCQ Questions Answer

From 751 to 765 of 1657

Q. Smut of wheat is mused by –

a. Ustilago maydis

b. Puccinia graminis

c. Ustilago tritici

d. Colletotrichum falcatum

  • c. Ustilago tritici

Q. Which of the following is an endangered species?

a. Black buck

b. Blue sheep

c. Gangetic dolphin

d. Mithun

  • b. Blue sheep

Q. Of the following man-made disasters, which is socially induced?

a. Debris Avalanche

b. Salt Water Intrusion

c. Arson

d. Ozone depletion

  • c. Arson

Q. Which one of the following endocrine gland is situated in the neck?

a. Pancreas

b. Thyroid

c. Pituitary

d. Adrenals

  • b. Thyroid

Q. The seat of intelligence is situated in the

a. cerebrum

b. cerebellum

c. medulla

d. thalamus

  • b. cerebellum

Q. For which one among the following diseases no vaccine is yet available?

a. Tetanus

b. Malaria

c. Measles

d. Mumps

  • b. Malaria

Q. Octopus is -

a. an arthropod

b. an echinoderm

c. a hemichordate

d. a mollusc

  • d. a mollusc

Q. Potential of air pollution increases when the ventilation coefficient is –

a. > 119000 m2/s

b. > 7,600 m2/s

c. < 3.600 m2/s

d. < 6,000 m2/s

  • d. < 6,000 m2/s

Q. Who among the following have venous heart?

a. Mammals

b. Reptilians

c. Fishes

d. Amphibians

  • c. Fishes

Q. In our body, antibodies are formed against pathogens in –

a. liver by RBC

b. blood by platelets

c. brain by macrophages

d. thymus by lymphocytes

  • d. thymus by lymphocytes

Q. Prawn heart carries -

a. no blood

b. deoxygenated blood

c. oxygenated blood

d. mixed blood

  • c. oxygenated blood

Q. Minamata disease was caused due to –

a. Lead

b. Cyanide

c. Mercury

d. Methyl isocyanate

  • c. Mercury

Q. Nutrients are recycled in the atmosphere with the help of certain micro- organisms referred to as -

a. producers

b. consumers

c. decomposers

d. None of these

  • c. decomposers

Q. The yellow colour of urine is due to presence of –

a. Bile

b. Lymph

c. Cholesterol

d. Urochrorne

  • d. Urochrorne

Q. Which of the following is known as 'grave yard' of RBCs?

a. Liver

b. Bone marrow

c. Spleen

d. Appendix

  • c. Spleen
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