Biology Practice Test 1

Q. 1
Which photosynthetic pigment reflects yellow red light?
  • a. Chlorophyll A
  • b. Chlorophyll B
  • c. Carotenoid
  • d. Xanthophylls
  • e. Phytochrome
  • Answer: A

Q. 2
Which of the following is an example for denitrifying bacteria?
  • a. Nitrosomonas sp
  • b. Nitrobacter sp
  • c. Rhizobium sp
  • d. Pseodomonas sp
  • e. All of the above
  • Answer: A

Q. 3
Which of the following glands secrete the FSH hormone?
  • a. Islets of Langerhans
  • b. Anterior pituitary gland
  • c. Posterior pituitary gland
  • d. Parathyroid gland
  • e. Testis
  • Answer: A

Q. 4
Which among the following processes results in dark coloured amorphous substance during decomposition in soil?
  • a. Mineralization
  • b. Fragmentation
  • c. Leaching
  • d. Humification
  • e. None of the above
  • Answer: A

Q. 5
By which of the following processes, does the exchange of DNA occur due to pairing of two chromosomes?
  • a. Mutation
  • b. Crossing over
  • c. Mitosis
  • d. Transduction
  • e. Transformation
  • Answer: A

Q. 6
Archaeopteryx belongs to the
  • a. Jurassic era
  • b. Deuonian era
  • c. Cretaceous era
  • d. Triassic era
  • e. None of these
  • Answer: A

Q. 7
Spleen is an organ of which of the following systems?
  • a. Digestive system
  • b. Endocrine system
  • c. Excretory system
  • d. Lymphatic system
  • e. Respiratory system
  • Answer: A

Q. 8
A region with high level of endemic species that is under threat from humans is called
  • a. Botanical garden
  • b. Wild life Sanctuaries
  • c. Zoos
  • d. Biodiversity hotspot
  • e. None of these
  • Answer: A

Q. 9
G protein receptors have
  • a. 5 transmembrane ?? helices
  • b. 7 transmembrane ?? helices
  • c. 5 transmembrane ?? helices
  • d. 6 transmembrane ?? helices
  • e. 7 transmembrane ?? helices
  • Answer: A

Q. 10
Which of the following metals is responsible for Itai-itai disease?
  • a. Arsenic
  • b. Cadmium
  • c. Lead
  • d. Mercury
  • e. Uranium
  • Answer: A

Q. 11
Which of the following produces angiotensinogen?
  • a. Liver
  • b. Pancreas
  • c. Kidney
  • d. Thyroid gland
  • e. Pituitary gland
  • Answer: A

Q. 12
Deposition of sediments or sediment accumulation is known as
  • a. Profundation
  • b. Aggradation
  • c. Biocoenosis
  • d. Trophic succession
  • e. None of these
  • Answer: A

Q. 13
What is the inactivated X chromosome in females called?
  • a. Barr body
  • b. Heterochromatin
  • c. Euchromatin
  • d. Nucleosome
  • e. None of the above
  • Answer: A

Q. 14
Lowest area of water body is called
  • a. Littoral zone
  • b. Aphotic zone
  • c. Photic zone
  • d. Benthic zone
  • e. None of the above
  • Answer: A

Q. 15
The type of petrification in which the organic matter of the dead body is replaced by double carbonates of calcium and magnesium is called
  • a. Silicification
  • b. Pyritization
  • c. Carbonization
  • d. Dolomitization
  • e. None of these
  • Answer: A

Score: 0/15