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Biology
Thallophyta
Find out what do the algal bloom and red-tides signify?
Biology
Thallophyta
Diatoms are also called ‘pearls of ocean’. Why? What is diatomaceous earth?
Biology
Thallophyta
Why are dinoflagellates called fire algae? Give an example.
Biology
Thallophyta
Is algae a parasite?
Biology
Thallophyta
What is meant by thallus?
Biology
Thallophyta
Which of the following algae is typically terrestrial in nature?
A. Lyngbya
B. Fritschiella
C. Volvox
D. Polysiphonia
Biology
Thallophyta
Which of the following would be helpful in forming algal blooms by the members of cyanobacteria?
1. Formation of zoospores
2. Ability to move to the desire position in the water column
3. Development of gas vacuoles
4. Formation of biconcave separation discs
Select the correct answer using the codes given
A. \[1\],\[2\] and \[3\]
B. \[1\] and \[4\]
C. \[2\] and \[3\]
D. \[3\] and \[4\]
Biology
Thallophyta
Which of the following unicellular algae reproduce by auxospores, have a silicified cell wall and store food in the form of fats, leucosin and chrysolaminarin?
A. Diatoms
B. Yellow green algae
C. Dinoflagellates
D. Euglenoids
Biology
Thallophyta
Which among the following do you consider as the best evidence to show that two species of algae are closely related?
A. They both respire and release \[C{O_2}\]
B. They both are found in the same habitat.
C. They both reproduce asexually.
D. They both have the same type of pigments.
Biology
Thallophyta
Blue green algae are:
A. Actinomycetes
B. Eukaryotes
C. Prokaryotes
D. Acellular
Biology
Thallophyta
Coenobium occurs in
A) Spirogyra
B) Ulothrix
C) Volvox
D) Chlorella
Biology
Thallophyta
In dinophyceae, the two flagella are
A. Anterior
B. One transverse and other vertical
C. Lateral
D. Posterior
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