BOTANY PG TRB PREPARATION ONLINE TEST - 3

Botany PGTRB Online Test

1. During fermentation sugar is converted into
A) Alcohol and carbon monoxide
B) Ethyl alcohol and oxygen
C) Ethylene and carbon oxide
D) Ethanol and carbon oxide
2. Bacterial growth will be maximum during
A) Log phase
B) Lag phase
C) Stationary phase
D) Decline phase
3. Name the bacteria that are responsible for souring of milk
A) Micrococcus candisans
B) Streptococcus lactis
C) Bacillus subilis
D) Bacillus anthracis
4. Industrial enzyme Amylase is produced by
A) Bacillus subtilis
B) Bacillus licheniformis
C) Salmonella
D) Klebsiella
5. Oxygen in respiration is used in
A) Glycolysis
B) Fermentation
C) Kreb's cycle
D) Electron transport
6. Soil pollution can be reduced by
A) The use of fertilizers
B) The use of natural manures
C) The use of industrial effluents
D) The use of domestic sewage water
7. Which pollutant is responsible for Ozone depletion in Antarctica
A) Carbon monoxide
B) Carbon dioxide
C) Nitrogen dioxide
D) Chlorofluoro carbons
8. Halophytes are plants adapted to grow in
A) Dry places
B) Wet places
C) Salty places
D) Sandy places
9. Hormone responsible for vernalization is
A) Florigen
B) Colchicine
C) Abscisin
D) Vernalin
10. 'nif gene' is concerned with
A) Synthesis of nitrogenase
B) Synthesis of nitrate reductase
C) Synthesis of nitrite reductase
D) None of these
11. Which one of the following plants cannot fix atmospheric nitrogen
A) Pea
B) Bean
C) Horse gram
D) Castor
12. Hemophilia is associated with
A) Blood
B) Lungs
C) Kidneys
D) Urine
13. "Age and area hypothesis" was proposed by
A) Odum
B) Rankier
C) Willis
D) Wegner
14. Y-Linked Genes are termed as
A) X-Y linked genes
B) Holandric genes
C) Split genes
D) Jumping genes
15. Hybridization through protoplast fusion is known as
A) Somatic hybridization
B) Clonal hybridization
C) Pureline hybridization
D) Mass hybridization
16. Water raises in the stem due to
A) Turgor pressure
B) Cohesion & transpiration pull
C) Osmotic pressure
D) None of thes
17. Number of chromosome in rice plant is
A) 20
B) 24
C) 16
D) 8
18. In the F2 generation genotypic and phenotypic ratios are identical in the case of
A) Mendelian monohybrids
B) Incomplete dominance
C) Mendelian dihybrids
D) None of these
19. The process of soil formation is known as
A) Biogenesis
B) Pedogenesis
C) Morphogenesis
D) None of these
20. Era of modern life is known as
A) Proterozoic era
B) Cenozoic era
C) Mesozoic era
D) Archeozoic era
Score =
Correct answers: