Which of the following statements is true for viroids?
1.  They infect only plants and consist of double-stranded DNA enclosed by protein coat
2.  They infect only animals and consist of single-stranded RNA enclosed by protein coat
3.  They infect only animals and consist of double-stranded RNA enclosed by protein coat
4.  They infect only plants and consist of single stranded RNA not enclosed by protein coat

Subtopic:  Virus, Viroids & Prions |
 81%
Level 1: 80%+
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Asexual spores are generally NOT found in
1. Ascomycetes
2. Basidiomycetes
3. Zygomycetes
4. Deuteromycetes
Subtopic:  Kingdom Fungi: Basidomycetes |
 85%
Level 1: 80%+
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Red tide is caused by
1. Gonyaulax
2. Ceratium
3. Euglena
4. Navicula
Subtopic:  Kingdom Protista: Dinoflagellates |
 97%
Level 1: 80%+
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Given below are two statements:
Statement I: The majority of heterotrophic bacteria are decomposers
Statement II: Bacteria are the sole members of the kingdom Monera

In the light of the above statements, choose the most appropriate answer from the options given below:
1. Both statement I and statement II are correct
2. Both statement I and statement II are incorrect
3. Statement I is correct but statement II is incorrect 
4. Statement I is incorrect but statement II is correct 
Subtopic:  Kingdom Monera: Introduction | Kingdom Monera: Bacterial Classification |
 88%
Level 1: 80%+
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Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by__________________ .
1. Bacterium
2. Virus
3. Viroid
4. Prion
Subtopic:  Virus, Viroids & Prions |
 80%
Level 1: 80%+
NEET - 2022
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital

Carl Woese separated archaebacteria from eubacteria on the basis of major differences such as
(a) The occurrence of branched chain lipids in the membrane. 
(b) Absence of peptidoglycan in the cell wall
(c) Chemoautotrophic and heterotrophic modes of nutrition
Choose the correct one(s).
1. (a) and (b)
2. (b) and (c)
3. (a) and (c)
4. All (a), (b) and (c)
Subtopic:  Kingdom Monera: Bacterial Classification |
 52%
Level 3: 35%-60%
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Identify the wrong match:
1. Agaricus – Edible ascocarp
2. Gonyaulax – Flagellated protist
3. Colletotrichum – Lack of sexual spores
4. Slime mould – Phagotrophic
Subtopic:  Kingdom Fungi: Ascomycetes | Kingdom Fungi: Basidomycetes |
 59%
Level 3: 35%-60%
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The causal agent of scrapie disease:
1. Is a proteinaceous particle
2. Has ss RNA
3. Is composed of protein and DNA
4. Is non-infectious to humans
Subtopic:  Virus, Viroids & Prions |
 53%
Level 3: 35%-60%
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A protozoan without a locomotory structure is:

1. Entamoeba
2. Trypanosoma
3. Plasmodium
4. Paramecium
Subtopic:  Kingdom Protista: Introduction | Protozoa |
 63%
Level 2: 60%+
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Read the below-given features and select how many of them are true for Agaricus:
(a) Mycelium is branched and septate
(b) Sexual spores are produced inside an ascus
(c) Fruiting bodies are edible
(d) Lack of sex organs and sexual reproduction
1. 4
2. 3
3. 1
4. 2
Subtopic:  Kingdom Fungi: Basidomycetes |
 50%
Level 3: 35%-60%
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