This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Environmental Ocean Technology – Marine Flora and Fauna”.
1. Aspergillus and Penicillium are ______________ involved in litter decomposition of mangroves.
a) microalgal species
b) seaweeds
c) bacteriophages
d) fungal species
View Answer
Explanation: Aspergillus and Penicillium are dominant fungal species that maintain fertility in the mangrove and surround environment. These are also dominant species responsible for litter decomposition.
2. _______________ are biodiversity hotspots for marine fungi.
a) Mangroves
b) Lichens
c) Benthos
d) Deep-sea
View Answer
Explanation: Mangrove forests are biodiversity hotspots for marine fungi because the mangrove trunks’ bases and roots are always submerged in the water (either intermittently or permanently) making it conducive for fungal growth.
3. Marine fungal species first digest then ingest the food.
a) True
b) False
View Answer
Explanation: Not just species belonging to the marine environment rather all fungal species first digest and then ingest their food. Fungi are heterotrophic and exist in diverse range of environments singularly or as endophytes.
4. Which is not true for the family Ascomycetes?
a) No disease symptoms
b) Microfungi
c) Endophytes
d) Toxic to plants
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Explanation: Fungal species belonging to the genera Ascomycetes are microfungi, that have and intricate endophytic relationship with plants. The endophytic fungi provide protection from predation of the host plant.
5. Marine fungi need high temperatures for growth and survival.
a) True
b) False
View Answer
Explanation: Temperature is the most important physical factor impacting growth of fungi. Marine fungi, in general require higher temperatures (25-30°C) for growth and reproduction. Ambient growth temperature for some wood fungi is lower at about 10°C.
6. What can be added to prevent bacterial contamination in fungal culture?
a) Chloramphenicol
b) Aspirin
c) Pyruvic acid
d) Gluconic acid
View Answer
Explanation: Fungal isolation and enrichment are done using the Sabouraud Chloramphenicol Agar (SCA) or potato dextrose agar. Chloramphenicol addition in the medium inhibits the bacterial growth.
7. Lactophenol cotton blue (LCB) is used for __________________
a) preventing bacteria
b) buffering
c) medium solidification
d) fungal identification
View Answer
Explanation: For identification of the fungal isolates, mycelia are carefully transferred (mounted on) using teasing needle on the slide containing a drop of lactophenol cotton blue (LCB stain). By looking under the microscope morphology can be analyzed.
8. The viruses infecting cyanobacteria are called ________________
a) zooplankton
b) bacterioplankton
c) cyanophages
d) crustacean viruses
View Answer
Explanation: The viruses infecting cyanobacteria are known as the cyanophages. Cyanobacteria such as Synechococcus and Prochlorochoccus are responsible for 25% of marine productivity and mortality due to cyanophages renders a great loss.
More MCQs on Marine Flora and Fauna:
- Marine Flora and Fauna MCQ (Set 2)
- Marine Flora and Fauna MCQ (Set 3)
- Marine Flora and Fauna MCQ (Set 4)
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.
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