This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Sustainable Aquaculture”.
1. IMTA is the farming of __________________
a) species from different trophic level
b) species from different geographies
c) species of different size
d) terrestrial species
View Answer
Explanation: Integrated Multi-trophic Aquaculture (IMTA) is the farming of species from various trophic levels. The species selection is done on the basis of wastes generated by the main culture species.
2. Choose the correct option.
| 1. Finfish | a. organic particulate nutrients |
| 2. Seaweed | b. inorganic dissolved nutrients |
| 3. Shell fish | c. fed species |
a) 1-c, 2-b, 3-a
b) 1-a, 2-b, 3-c
c) 1-a, 2-c, 3-b
d) 1-b, 2-c, 3-a
View Answer
Explanation: Species that interact synergistically and lead to overall biomitigation are selected for IMTA. Finfish and shrimp are fed species, seaweeds and lands are extractive species while shellfish and invertebrates utilize organic particulate matter.
3. Polyculture is same as IMTA.
a) True
b) False
View Answer
Explanation: Polyculture is the simultaneous farming of two or more fish that have same physiological and nutritional processes. Integrated Multi-trophic Aquaculture (IMTA) on the other hand is the farming/culture of distantly related species having different physiological processes.
4. Saltwort is a ___________________
a) invertebrate
b) saprophyte
c) halophyte
d) shellfish
View Answer
Explanation: Saltwort is a saltwater vegetable species and a halophyte that can tolerate up to 20 ppm salinity. It is a common ingredient of European cuisine and also used as a fodder for farm animals.
5. Choose the appropriate option.
| 1. Swirl separator | a. Fine solids removal |
| 2. Upflow media filter | b. Nitrification |
| 3. Moving bed bioreactor | c. Solids removal |
a) 1-a, 2-b, 3-c
b) 1-c, 2-a, 3-b
c) 1-c, 2-b, 3-a
d) 1-b, 2-a, 3-c
View Answer
Explanation: For efficient purification of water that has to be circulated in raceways of an IMTA, different types of filters are incorporated. First filtration proceeds through swirl separator, then upflow media filter followed by moving bed bioreactor.
6. Raceways are lined with __________________
a) probiotics
b) polyglycol
c) wood
d) polyethylene
View Answer
Explanation: Raceways or flow-through system are channels that are used to culture fish in IMTA and other aquaculture setups. Raceways for IMTA are usually constructed of wood, lined with polyethylene (a thermoplastic).
7. In IMTA water is regularly monitored for ammonia levels.
a) True
b) False
View Answer
Explanation: Water is regularly sampled from different points in the Integrated Multi-trophic Aquaculture (IMTA) system to analyze nitrite-nitrogen and ammonium-nitrogen.
8. ____________ improves nitrification.
a) Acidity
b) Alkalinity
c) High light intensity
d) Low temperature
View Answer
Explanation: Ammonia is toxic to fish and its level should be maintained to lowest possible level. In addition to using a moving-bed biofilter other strategies to maintain ammonia levels are alkalinity, increasing flow rate, and reducing biomass density.
9. _______________ was developed to increase sustainability of intensive aquaculture.
a) RAS
b) IMTA
c) Extensive aquaculture
d) Mariculture
View Answer
Explanation: Integrated multi-trophic aquaculture (IMTA) has been developed to increase the sustainability of intensive aquaculture by incorporating an ecosystem-based approach.
10. Which of the following is not cultivated in IMTA?
a) Photosynthetic bacteria
b) Vertebrate aquatic organisms
c) Invertebrate aquatic organisms
d) Seaweeds and land plants
View Answer
Explanation: Vertebrate and invertebrate organisms and seaweeds (or terrestrial plants) are produced in IMTA. Photosynthetic bacteria however is not a culture species, however it naturally occurs in some outdoor aquaculture setups.
Sanfoundry Global Education & Learning Series – Marine Biotechnology.
To practice all areas of Marine Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
