The phenomenon of red tides is associated with blooms of:
1. | Zooxanthelle | 2. | Gonyaulax |
3. | Blue green algae | 4. | Ctenoplana and Beroe |
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The given figure shows an organism capable of causing ret tides in water bodies that adversely affect the aquatic life. This organism can be:
1. Ctenoplana 2. Gonyaulax 3. Pennatula 4. Gorgonia |
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Which of the following is not a characteristic of dinoflagellates?
1. | Mostly fresh water and photosynthetic |
2. | Cell wall with stiff cellulosic plates |
3. | Two flagella |
4. | Various colored pigments in the cell |
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Match each item in Column I [Protist] with one in Column II [Characteristic] and select the correct option:
Protist | Characteristic |
A. Chrysophytes | P. Plasmodium |
B. Dinoflagellates | Q. Chief producers in the ocean |
C. Euglenoids | R. Stiff cellulose plates in cell wall on outer surface |
D. Slime moulds | S. Two flagella, one long and one short |
A | B | C | D | |
1. | R | Q | S | P |
2. | Q | S | P | R |
3. | Q | R | S | P |
4. | R | S | Q | P |
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