Marine Flora and Fauna Questions and Answers – Set 3

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

Answer: a
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

Answer: a
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
c) TMV
View Answer

Answer: d
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

Answer: a
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

Answer: d
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

Answer: a
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

Answer: a
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

Answer: c
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

Answer: a
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

Answer: b
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.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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