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 |
The phenomenon of red tides is associated with blooms of:
| 1. | Zooxanthelle | 2. | Gonyaulax |
| 3. | Blue green algae | 4. | Ctenoplana and Beroe |
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 |
Match each item in Column-I (Protist) with one in Column-II (Characteristic) and select the correct option:
| Column-I (Protist) | Column-II (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 |