Q. No.Which of the following organisms are known as chief producers in the oceans?
| 1. | Dinoflagellates | 2. | Diatoms |
| 3. | Cyanobacteria | 4. | Euglenoids |
Subtopic: Kingdom Protista: Chrysophytes |
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Photosynthetic protists with indestructible cell wall are
1. Pyrophytes
2. Chrysophytes
3. Euglenophytes
4. Myxomycetes
Subtopic: Kingdom Protista: Chrysophytes |
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Match list I with List II
Choose the correct answer from the options given below:
1. A-IV, B-II, C-III, D-I
2. A-III, B-IV, C-I, D-II
3. A-III, B-II, C-I, D-IV
4. A-IV, B-I, C-II, D-III
| List I | List II | ||
| A. | Diatoms | I. | Pellicle instead of cell wall |
| B. | Dinoflagellate | II. | Red tides |
| C. | Euglenoid | III. | Chief producers in oceans |
| D. | Sporozoan | IV. | Malaria |
1. A-IV, B-II, C-III, D-I
2. A-III, B-IV, C-I, D-II
3. A-III, B-II, C-I, D-IV
4. A-IV, B-I, C-II, D-III
Subtopic: Kingdom Protista: Chrysophytes | Kingdom Protista: Dinoflagellates | Kingdom Protista: Euglenoids | Protozoa |
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Select the wrong statement:
| 1. | Diatoms are microscopic and float passively in water. |
| 2. | The walls of diatoms are easily destructible. |
| 3. | ‘Diatomaceous earth’ is formed by the cell walls of diatoms. |
| 4. | Diatoms are chief producers in the oceans. |
Subtopic: Kingdom Protista: Chrysophytes |
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| Assertion(A): | Cell wall of diatoms are indestructible |
| Reason(R): | Cell wall of diatoms possesss silica |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False statement |
Subtopic: Kingdom Protista: Chrysophytes |
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What would be true for diatomaceous earth regarding modern industrial applications?
| 1. | It is a primary ingredient in the manufacture of plastics. |
| 2. | It is used in the filtration of oils and syrups due to its gritty texture. |
| 3. | It serves as a raw material for the production of biofuels. |
| 4. | It is utilized in the construction industry as a lightweight aggregate. |
Subtopic: Kingdom Protista: Chrysophytes |
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Match the columns:
1. A = (iv) , B = (ii) , C = (iii), D = (i)
2. A = (i) , B = (iv) , C = (iii), D = (ii)
3. A = (i) , B = (ii) , C = (iii), D = (iv)
4. A = (iv) , B = (iii) , C = (i), D = (ii)
| Column -I | Column-II |
| A. Plasmodium | (i) Diatoms |
| B. Mixotrophic nutrition | (ii) Euglenoids |
| C. Red tide | (iii) Dinoflagellates |
| D. Oceanic chief producers | (iv) Slime moulds |
1. A = (iv) , B = (ii) , C = (iii), D = (i)
2. A = (i) , B = (iv) , C = (iii), D = (ii)
3. A = (i) , B = (ii) , C = (iii), D = (iv)
4. A = (iv) , B = (iii) , C = (i), D = (ii)
Subtopic: Kingdom Protista: Chrysophytes | Kingdom Protista: Euglenoids | Kingdom Protista: Slime Moulds |
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Match each item in Column-I with one in Column-II and select the correct match from the codes given:
Options:
1. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
2. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
3. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
4. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
| Column-I | Column-II | ||
| (a) | Diatoms | (i) | African sleeping sickness |
| (b) | Dinoflagellates | (ii) | Cell wall has stiff cellulosic plates |
| (c) | Flagellated protozoan | (iii) | Malaria |
| (d) | Sporozoan | (iv) | Cell wall embedded with silica |
1. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
2. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
3. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
4. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
Subtopic: Kingdom Protista: Chrysophytes | Kingdom Protista: Dinoflagellates | Protozoa |
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The cell wall resembles a soapbox in the organism of which of the given kingdom according to Whittaker’s classification system?
1. Monera
2. Protista
3. Fungi
4. Plantae
Subtopic: Kingdom Protista: Chrysophytes |
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The kingdom Protista includes a variety of organisms, among which the following is true about the group Chrysophytes?
1. They have a silica shell
2. They lack a nucleus
3. They are predominantly parasitic
4. They reproduce only asexually
1. They have a silica shell
2. They lack a nucleus
3. They are predominantly parasitic
4. They reproduce only asexually
Subtopic: Kingdom Protista: Chrysophytes |
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