1081. Gaseous exchange in birds occurs at level of_______________?
✅ D. Parabronchi
Option A: Alveoli Option B: Air sacs Option C: Bronchi Option D: Parabronchi Correct Answer : Parabronchi Read more
Biology MCQs – Page 55
1082. Pollen grains in pinus have __________ for dispersal through wind?
✅ C. Wings
Option A: Flagella Option B: Cilia Option C: Wings Option D: Feathers Correct Answer : Wings Read more
1083. The single healthy megaspore retained within the megasporangium germinates to form an egg containing female gaemtophyte called______________?
✅ D. Embroyo sac
Option A: Ovule Option B: Seed Option C: Fruit Option D: Embroyo sac Correct Answer : Embroyo sac Read more
1084. Alternation of generations is absent in___________?
✅ A. Hydration
Option A: Hydration Option B: Obelia Option C: Jelly fish Option D: Physalia Correct Answer : Hydration Read more
1085. Double fertilization is feature of____________?
✅ D. Angiosperms
Option A: Ferns Option B: Whisk ferns Option C: Gymnosperms Option D: Angiosperms Correct Answer : Angiosperms Read more
1086. If bile pigments are prevented from leaving digestive tract, then they cause_____________?
✅ B. Jaundice
Option A: Hepatitis Option B: Jaundice Option C: Gall stones Option D: Blockage Correct Answer : Jaundice Read more
1087. Initial pH of food vacuole during digestion in amoeba is____________?
✅ B. 5.6
Option A: 5.3 Option B: 5.6 Option C: 7.3 Option D: 7.6 Correct Answer : 5.6 Read more
1088. The arrangement of _________ speaks of the division of labour within cell?
✅ D. Organelles
Option A: Molecule Option B: Subatomic particles Option C: Atoms Option D: Organelles Correct Answer : Organelles Read more
1089. NADH is oxidized by___________?
✅ A. Coenzyme ?
Option A: Coenzyme ? Option B: Cytochrome b Option C: Oxygen Option D: Glycolysis Correct Answer : Coenzyme ? Read more
1090. Salivary glands present in front of ear are___________?
✅ D. Parotid
Option A: Sublingual Option B: Submaxillary Option C: Submandibular Option D: Parotid Correct Answer : Parotid Read more
1091. How many spiracles are present in cockroach_____________?
✅ C. 20
Option A: 5 Option B: 10 Option C: 20 Option D: 40 Correct Answer : 20 Read more
1092. Which of the following is the correct sequence in the biological method?
✅ B. Observation?hypothesis?deduction?testing of deduction
Option A: Observation?hypothesis?law?theory Option B: Observation?hypothesis?deduction?testing of deduction Option C: Hypothesis?observation?deduction?testing of deduction Option D: law?theory?deduction?observation Correct Answer : Observation?hypothesis?deduction?testing of deduction Read more
1093. Amphibians are considered to be evolved from___________?
✅ C. Dipnoi
Option A: Newts Option B: Varanope Option C: Dipnoi Option D: Hagfishes Correct Answer : Dipnoi Read more
1094. It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:
✅ B. Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
Option A: Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones Option B: Older sediment layers have less amount of these reaioactive isotopes as that of the young ones. Option C: Older sediment layers have greater amount of these radioactive isotopes as that of the young ones. Option D: Older sediment layers did… Read more
1095. Reverse transcriptase is present in____________?
✅ C. All retroviruses
Option A: All RNA viruses Option B: All DNA viruses Option C: All retroviruses Option D: All viruses Correct Answer : All retroviruses Read more
1096. A large regional community primarily determined by climate is called__________?
✅ C. Biome
Option A: Population Option B: Community Option C: Biome Option D: Habitat Correct Answer : Biome Read more
1097. Branch of biology which deals with the study of chemical components and chemical processes in living organisms is called________________?
✅ C. Biochemistry
Option A: Molecular biology Option B: Physiology Option C: Biochemistry Option D: Atomic biology Correct Answer : Biochemistry Read more
1098. A structure formed by groups of similar cells organized into loose sheetsor bundles performing similar functions is called as________?
✅ C. A Tissue
Option A: An organ Option B: An organism Option C: A Tissue Option D: A Cell Correct Answer : A Tissue Read more
1099. Oxygen accounts for __________ percent of totals human body mass?
✅ A. 65%
Option A: 65% Option B: 18% Option C: 10% Option D: 3% Correct Answer : 65% Read more
1100. Out of total organisms on earth, _____________are vascular plants?
✅ C. 17.60%
Option A: 53.10% Option B: 19.90% Option C: 17.60% Option D: 9.40% Correct Answer : 17.60% Read more