Assertion: Cell wall of diatoms are indestructible 
Reason: Cell wall of diatoms possesss silica 
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion 
3. If assertion is true but reason is false 
4. If both assertion and reason are  false statement 
Subtopic:  Kingdom Protista: Chrysophytes |
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Assertion: The spores of 'consumer-decomposer' protists contain spores cellulosic cell wall
Reason: These spores are dispersed by wind
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion 
3. If assertion is true but reason is false 
4. If both assertion and reason are  false statement 
Subtopic:  Kingdom Protista: Chrysophytes |
To view explanation, please take trial in the course below.
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NEET 2023 - Target Batch - Aryan Raj Singh
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Read the following statements: 
i. Majority of the slime moulds are freshwater organisms
ii. Dinoflagellates are mostly freshwater organisms 
iii. Slime moulds form plasmodium 
iv.  Protozoans may be autotrophs 
v. The spores of the slime moulds are dispersed by water current 
How many of the above statements are incorrect? 
1. Three 
2. Two 
3. Four 
4. Five 
Subtopic:  Kingdom Protista: Chrysophytes | Kingdom Protista: Dinoflagellates |
To view explanation, please take trial in the course below.
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Read the following statements with respect to diatoms: 
i. In diatoms, the cell walls form two thin overlapping shells which fit together as in a soap box 
ii. The walls are embedded with silica and thus are indestructible 
iii. The fossilized diatoms are called diatomaceous earth 
iv. Diatoms are not the main producers in the oceans 
v. Diatomaceous earth is used in polishing, filtration of oil and syrups 
How many of the above statements is/are incorrect? 
1. One 
2. Four 
3. Three 
4. Two 
Subtopic:  Kingdom Protista: Chrysophytes |
To view explanation, please take trial in the course below.
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Match the columns: 
 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 |
To view explanation, please take trial in the course below.
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To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology