This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Marine Flora and Fauna – Set 3”.
1. __________________ is an alternate to antibiotic therapy.
a) Phage therapy
b) Anthelmintic
c) Antispasmodic
d) Antiviral
View Answer
Explanation: Phage therapy is a potential therapy as an alternate to antibiotics in aquatic and aquaculture medicine. Bacteriophages lead to bacterial mortality without any issues of antibacterial resistance.
2. Marine microalgae possess both PSI and PSII.
a) True
b) False
View Answer
Explanation: Marine microalgae are responsible for half the primary production happening in the marine environment. Similar to the land plants, marine microalgae possess both photosystem-I and photosystem-II.
3. The first gene probe was introduced for detection of __________________ in aquaculture.
a) TSV
b) WSSV
c) TMV
d) IHHNV
View Answer
Explanation: The first gene probe was used for the detection of infection hypodermal and hematopoietic virus (IHHNV) using radioactive tags. An alternative nonradioactive was developed later for ease of application.
4. __________________ is a rich source of polyunsaturated fatty acids.
a) Microalgae
b) Marine fungi
c) Marine phototrophic bacteria
d) Sulfur reducing bacteria
View Answer
Explanation: Marine microalgae are a rich source of various pharmaceutically important compounds such as astaxanthin, beta-carotene, and polyunsaturated fatty acids (PUFAs). Microalgae are also used as live feed for aquaculture.
5. FAMEs of microalgal origin are used as __________________
a) antiparasitic, anitimalarial agents
b) buffers, gene probes
c) biopetrol, biogas
d) jet fuels, biodiesel
View Answer
Explanation: Short-chain fatty acid methyl esters (FAMEs) are derived from micro-algae. C9 TO C17 FAMEs are potential alternative to jet fuels, and C9 to C23 have been recognized as biodiesel.
6. Marine microalgae are photosynthetic organisms.
a) True
b) False
View Answer
Explanation: Marine microalgae are a diverse group of photosynthetic organisms, which are also the major primary producers in marine environment. Microalgae have following classes such as Cyanophyceae, Rhodophyceae, Cryptophyceae, Dinophyceae, and Haptophyceae.
7. Which cyanobacteria does not lack phycocyanin?
a) Anabaena
b) Prochlorothrix
c) Prochlorococcus
d) Prochloron
View Answer
Explanation: Members of the family Cyanophyceae usually contain photosynthetic pigments – chlorophyll a and phycocyanin. Prochlorothrix, Prochloron, and Prochlorococcus contain chlorophyll a and b, instead of phycocyanin.
8. __________________ has been used as a eukaryotic microalgae model.
a) Dunaliella salina
b) Synechococcus elongates
c) Chlamydomonas reinhardtii
d) Anabaena variabilis
View Answer
Explanation: Chlamydomonas reinhardtii has been used as eukaryotic microalgae model organism for molecular biology studies. It was also the first organism to have the chloroplast transformed.
9. Choose the appropriate option.
| 1. Chlorella | a. source of edible carotenoids |
| 2. Diatoms (Bacillariophyceae) | b. live feed for mariculture |
| 3. Dunaliella salina | c. single cell protein |
a) 1-c, 2-b, 3-a
b) 1-a, 2-b, 3-c
c) 1-b, 2-a, 3-c
d) 1-c, 2-a, 3-b
View Answer
Explanation: Microalgae have a wide range of application ranging from aquaculture, cosmetics to pharmaceuticals and supplements. Many species due to their bioactive compounds are cultured on a large scale and are commercially available, for instance the Dunaliella sp. a rich source of β-carotene.
10. The zooxanthellae species belongs to ____________________
a) Haptophyta
b) Dinophyta
c) Rhodophyta
d) Bacillariophyta
View Answer
Explanation: The Symbodinium species of Dinophyta (dinoflagellates) are associated with corals, imparting beautiful pigments. The zooxanthellae, as these species are called, also guard the corals against bleaching events.
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.
