Dinoflagellates:

I. Are mostly marine and photosynthetic.

II. Have a cell wall that has stiff cellulose plates on the outer surface.

III. Have two flagella

IV. Have chloroplasts bound by three membranes

The correct statements are:

(1) I, II and III

(2) I, III and IV

(3) II, III and IV

(4) I, II III and IV

Subtopic:  Kingdom Protista: Dinoflagellates |
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Match each item in Column I with one in Column II and select your answer from the codes given below:

Column I   Column II
A. Diatoms a. Protein-rich layer of pellicle
B. Dinoflagellates   b. Cell wall embedded with silica
C.  Euglenoids c. Spores with true walls
D. Slime moulds   d.  Cellulose plates in the cell wall

Codes:

A     B      C      D
1. b a c d
2. b d a c
3. b c a d
4.   b a d c
Subtopic:  Kingdom Protista: Dinoflagellates | Kingdom Protista: Euglenoids | Kingdom Protista: Slime Moulds |
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'Red tide' is caused by

(1) Gonyaulax

(2) Ceratium

(3) Triceratium

(4) All of these

Subtopic:  Kingdom Protista: Dinoflagellates |
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Red tides in the sea are because of

(1) Red dinoflagellates

(2) Geladium

(3) Red Chrysophytes

(4) Red algae

Subtopic:  Kingdom Protista: Dinoflagellates |
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Dinoflagellates- do not possess which feature?

(1) Marine and photosynthetic

(2) Variety in colors

(3) Cell wall with silica

(4) Two flagella

Subtopic:  Kingdom Protista: Dinoflagellates |
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Dinoflagellates can not appear

(1) Black

(2) White

(3) More than one option is correct

(4) Pink

Subtopic:  Kingdom Protista: Dinoflagellates |
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Which of the following property belongs to Dinoflagellates?

(1) Loose cellulose plates in cell wall

(2) The outer surface has more loosening of cell wall than inner

(3) Rapid multiplication

(4) Not harmful for others

Subtopic:  Kingdom Protista: Dinoflagellates |
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Which of the following is not associated with red tides

(1) Harmful for marine organisms

(2) Gonyaulax

(3) Aquatic habitat

(4) Color is due to pigment in the cell of Dinoflagellates

Subtopic:  Kingdom Protista: Dinoflagellates |
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Red tides are due to the rapid multiplication of

1. Cyanobacteria

2. Chlamydomonas

3. Gonyaulax

4. Diatoms

Subtopic:  Kingdom Protista: Dinoflagellates |
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Which of the following statements about dinoflagellates is true?
1.  They possess two flagella.
2.  All known varieties are autotrophic.
3.  Their walls are usually composed of silica plates.
4.    Many types lack mitochondria
Subtopic:  Kingdom Protista: Dinoflagellates |
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