This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Marine Algal Biotechnology”.
1. Which organelle in the prochlorophytes contains the enzyme RuBisCo?
a) Carboxysome
b) Phycobilisomes
c) Thylakoids
d) Mitochondria
View Answer
Explanation: Prochlorophytes have carboxysomes (polyhedral bodies) that are RuBisCo containing organelles. The ribulose bisphosphate carboxylase/oxygenase enzyme is responsible for conversion of inorganic carbon to reduced organic carbon.
2. Which of the following division has the common name golden algae?
a) Prochlorophyta
b) Rhodophyta
c) Haptophyta
d) Heterokontophyta
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Explanation: Heterokontophytes are a large and a diverse group containing both phototrophs and heterotrophs. The characteristic of organisms belonging to this group is the presence of two dissimilar flagella.
3. Chlorophyll a is the only chlorophyll present in rhodophyes.
a) True
b) False
View Answer
Explanation: Chlorophyll a along with accessory phycobiliproteins arranged into phycobilisomes is the characteristic of rhodophytes. There is also a complete absence of any larval stage in the rhodophytes.
4. Which is not an accessory pigment found in heterekontophytes?
a) Fucoxanthin
b) Beta-carotene
c) Vaucheriaxanthin
d) Erythrocyanin
View Answer
Explanation: All groups of the Heterokontophyta have a dominance of accessory pigments, majorly carotenoids over chlorophyll which gives them a brown coloration instead of green. Erythrocyanin is not found in the brown algae.
5. Which is the main storage polysaccharide of Heterokontophyta?
a) Chrysolaminarin
b) Starch
c) Glycogen
d) Glucose
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Explanation: The main storage polysaccharide is chrysolaminarin, a beta-1, 3-glucan. This storage product is located inside special vacuoles. The hetekontophyta species reproduce sexually and have a haplontic life cycle.
6. Dinokaryon is ___________
a) marine microbe
b) flagella
c) vegetative cell
d) nucleus
View Answer
Explanation: Dinokaryon is a special type of nucleus present in the dinophytes. It is characterized by the presence of fibrillar chromosomes that remain condensed during the mitotic cycle.
7. Trichocysts are present on the cell surface of dinoflagellates.
a) True
b) False
View Answer
Explanation: Trichocysts are present on the cells of dinoflagellates and can discharge when stimulated. Dinoflagellates may exhibit bioluminescence and are responsible for causing toxic algal blooms in eutrophic waters.
8. The desmokont type dinophyta have _______
a) no flagella
b) apical flagella
c) basal flagella
d) flagella originating from cingulum
View Answer
Explanation: The desmokont type dinoflagellates have flagella emanating from the apex (apical horn). The other type based on the location of flagella is the desmokont type in which the flagellum originates from within the interface of epitheca and hypotheca (cingulum).
9. Pellicle of a euglenophytes is located in the _________
a) nucleus
b) thylakoid
c) mitochondria
d) cytoplasm
View Answer
Explanation: Pellicle is a proteinaceous wall present inside the cytoplasm that can be spirally constructed or can be ornamented. Presence of this wall enables the euglenophytes to ooze through the mud or sand.
More MCQs on Marine Algal Biotechnology:
- Marine Algal Biotechnology MCQ (Set 2)
- Marine Algal Biotechnology MCQ (Set 3)
- Marine Algal Biotechnology MCQ (Set 4)
- Marine Algal Biotechnology MCQ (Set 5)
Sanfoundry Global Education & Learning Series – Marine Biotechnology.
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