Environmental Biotechnology MCQ

Test your knowledge with important Environmental Biotechnology MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Environmental Biotechnology MCQs at Bissoy

• The fertility of oceans is used to express the capacity for the production of organic matter by
  ক

  The organism in these water

  খ

  Presence of nitrogenase

  গ

  Presence of Rhizobium

  ঘ

  Both B and C
• In nutrient cycles in general, minerals tend to be dispersed throughl . . . . . . . .
  ক

  Plant action

  খ

  Surface and subsurface runoff

  গ

  Evaporation

  ঘ

  Assimilation
• Disease caused by eating fish found in water contaminated with industrial wastes havingmercury is
  ক

  Minimata disease

  খ

  Bright disease

  গ

  Hashimotos disease

  ঘ

  Osterosclerosis
• Solar ponds are used for
  ক

  Salt production

  খ

  Aquaculture

  গ

  Power generation

  ঘ

  All of the above
• Lignin's diminished biologically degraded under anoxic conditions results in
  ক

  Accumulation of carbohydrates molecules

  খ

  Accumulation of lignified molecules including the formation of peat bogs and muck soi Is

  গ

  Accumulation of starch molecules including the formation of peat bogs and muck soils

  ঘ

  Accumulation of lipid molecules
• Genes for biodegradation of xenobiotics by Pseudomonas are located on
  ক

  Plasmids

  খ

  Genome

  গ

  Trascriptome

  ঘ

  Proteome
• The orchid seeds do not germinate under ordinary conditions because
  ক

  Orchid seeds are too large for disposal

  খ

  Orchid seeds do not have endosperm

  গ

  Orchid seeds undergo a dormancy period

  ঘ

  They germinate under very dry conditions
• Which one of the following is a valid assumption regarding the molecular clock hypothesis in evolution?
  ক

  For a given protein sequence, mutations accumulate at a constant rate in all lineages

  খ

  For a given protein sequence, mutation rates are different in different lineages

  গ

  All proteins evolve at the same constant rate

  ঘ

  For a given linage, mutation rates are the same for all proteins
• A synthetic chemical compound that is not naturally available in nature is
  ক

  Probiotics

  খ

  Xenobiotic

  গ

  Epibiotic

  ঘ

  Antibiotic
• A small reduction in ozone concentration can lead to a large increase in the amount of harmful ultraviolet radiations reaching the earth in the wavelength region of
  ক

  200 - 205 nm

  খ

  220 - 225 nm

  গ

  260 - 265 nm

  ঘ

  295 - 300 nm
• At the present time volcanoes are confined to certain limited areas of the Earth's surface. This special zone is called
  ক

  Trans - Atlantic volcanic zone

  খ

  Circum - Pacific Ring of fire

  গ

  Central - Pacific Inter - Continental zone

  ঘ

  Indian - Ocean volcanic belt
• General circulation model (GCM's) are used to
  ক

  Predict climate

  খ

  Predict cyclones

  গ

  Study ocean currents

  ঘ

  Study temperature on wind
• Which one is exhaustible but renewable natural source?
  ক

  Fossil

  খ

  Petroleum product

  গ

  Forest

  ঘ

  Coal
• A simple and relatively inexpensive film-flow type of aerobic treatment method is
  ক

  Septic tank

  খ

  Activated sludge process

  গ

  Percolating filter system

  ঘ

  All of the above
• According to US water standards, the maximum permissible coliform count (number/100 ml) in recreational waters is
  ক

  10, 000

  খ

  5,000

  গ

  1,000

  ঘ

  500
• Which of the following is being used to produce "super bioabsorbent", a polysaccharide which is composed of glucose and glucuronic acid?
  ক

  Alcaligenes luteus

  খ

  Pseudomonas putida

  গ

  Thermus aquaticus

  ঘ

  Penicillium notatum
• Which of the following is for rhizosphere?
  ক

  Region where soil and roots make contact

  খ

  Apical part of root

  গ

  Epidermal part of the root

  ঘ

  Root hairs
• Bioremediation of organic wastes is generally based on which of the following?
  ক

  Bacteria

  খ

  Animal species

  গ

  Plant species

  ঘ

  Both A and B
• The presence of CO₂ in biogas
  ক

  Increases its calorific value

  খ

  Makes it liquid

  গ

  Does not influence its calorific value

  ঘ

  Decreases its calorific value
• The disinfection method by chlorine is most commonly used method, the other method/s is/are
  ক

  Ozonation

  খ

  Irradiation ultraviolet light

  গ

  Both A and B

  ঘ

  Hydrogenation
• One of the purpose of secondary treatment of industrial waste water and sewage is to
  ক

  Increase the chlorine content

  খ

  Reduce the BOD

  গ

  Encourage the formation of PCBs

  ঘ

  Discharge ammonification
• Which of this remote sensing tool is commonly used for groundwater exploration and soil moisture determination?
  ক

  Colour composite imageries

  খ

  Band 5 spectra

  গ

  Infra-red spectra

  ঘ

  Black and white aerial photos
• Photovoltaics (solar cells) work on the principle of
  ক

  Raman effect

  খ

  Zeeman effect

  গ

  Photoelectric effect

  ঘ

  Faraday effect
• Species diversity is generally higher in ecosystem experiencing
  ক

  No disturbance

  খ

  Moderate disturbance

  গ

  High disturbance

  ঘ

  Drastic disturbance
• A biogeochemical cycle is the
  ক

  Cycling of energy through the biosphere

  খ

  A part of pollution meat must plats

  গ

  Global meteorological cycles

  ঘ

  Cycling of elements through the biotic and abiotic sphere
• A majority of the antibiotics are derived from actinomycetes which come from members of the genus
  ক

  Nocardia

  খ

  Streptomyces

  গ

  Micromonospora

  ঘ

  Actinomyces
• PM2.5 refers to
  ক

  Mass of particles of size less than 2.5 μrn

  খ

  Mass of particles of size greater than 2.5 μrn

  গ

  Number of particles of size less than 2.5 μrn

  ঘ

  Number of particles of size greater than 2.5 μrn
• OCT plasmid is responsible for degradation of
  ক

  Phenols

  খ

  n-alkanes

  গ

  Herbicides

  ঘ

  Dioxins
• One of the following is not an In situ conservation for biological resources
  ক

  Biosphere reserve

  খ

  National parks

  গ

  Protected areas

  ঘ

  Breeding under confirmed areas
• Bulking of sewage sludge is frequently associated with
  ক

  High C : N ration

  খ

  High C : P ratio

  গ

  High dissolved oxygen

  ঘ

  All of the above