NCERT NEET Biology | Chapter 2: Biological Classification (English Version) Quick Revision - One Page Hints

2. BIOLOGICAL CLASSIFICATION

Aristotle’s Classification

• Plants : Trees, Shrubs, Herbs
• Animals : Red Blood, Without Red Blood

Linnaeus’s Two-Kingdom classification

• Plantae
• Animalia

Drawbacks of 2-kingdom classification

• Bacteria, Cyanobacteria (Prokaryotes)
• Fungi, Mosses, Ferns, Gymnosperms & Angiosperms (Eukaryotes) [Included under plants]
• Chlamydomonas & Spirogyra (Placed under algae)
• Heterotrophic fungi and autotrophic green plants [Did not differentiate between cell wall]

R.H. Whittaker’s Five Kingdom Classification

Monera → Protista → Fungi → Plantae → Animalia

Monera

• Bacteria : Coccus (Spherical), Bacillus (Rod-shaped), Vibrium (Comma-shaped), Spirillum (Spiral)

Archaebacteria different cell wall structure

• Halophiles (Extreme salty areas)
• Thermoacidophiles (Hot springs)
• Methanogens (Marshy areas)
• Present in the guts of ruminant animals (cows, buffaloes)

Eubacteria (True bacteria)

• Causes : Cholera, Typhoid, Tetanus, Citrus canker
• Blue-green Algae : Cyanobacteria, Photosynthetic autotrophs
• Heterocysts : Nostoc & Anabaena
• Decomposers (Heterotrophic bacteria)
• Chemosynthetic autotrophic (Nutrient recyclers) P, Fe, N, S
• Mycoplasma : Facultative anaerobe (Organism without cell wall) resistant to Penicillin Eg. PPLO

Protista : Boundries are not well defined

• Chrysophytes

• Plankton (Float passively)
• Diatoms & golden algae (Desmids)

• Dinoflagellates : Gonyaulax (Red dinoflagellates)
• Euglenoids : Euglena - Pellicle (Protein rich layer)
• Slime moulds : Aggregation of slime moulds : Plasmodium
• Protozoans

• Predators or parasites (Heterotrophs) – Primitive relatives of animals
• Amoeboid protozoans : Amoeba, entamoeba
• Flagellated protozoans : Trypanosoma
• Ciliated protozoans : Paramoecium
• Sporozoans : Plasmodium (malarial parasite)

Fungi : Show great diversity in morphology and habitat.

• Mould on bread & rotten fruits, mushroom, toadstools
• White spots on mustard leaves
• Fungi source of antibiotics Penicillium
• Yeast
• Puccinia
• Lichens [fungi (mycobiont) + algae (phycobiont)]
• Mycorrhiza (fungi + roots of higher plants)
• Phycomycetes (Lower fungi) : Algal fungi, Aseptate or coenocytic

• Eg.: Mucar, Rhizopus (bread mould), Albugo (Parasitic fungi on mustard)

• Ascomycetes (Sac-fungi) Branched, septate

• Yeast (unicellular)
• Penicillium (multicellular)
• Aspergillus, Claviceps, Neurospora (Biochemical and genetic work), Morels, Truffles (edible)

• Basidiomycetes

• Mushrooms, bracket fungi on puff balls
• Rusts & smuts (parasites on plant bodies)
• Agaricus (mushrooms) - Ustilago (smut) - Puccinia (rust of wheat)

• Deuteromycetes : Imperfect fungi

• Alternaria
• Colletotrichum
• Trichoderma

Plantae (Plant)

• Bladder wort & Venus flytrap (insectivorous) [Partially heterotrophic]
• Cuscuta (parasites)

Virus : Obligate Parasite

• Name : Given by Pasteur. D.J. Ivanowsky (1892)
• M.W. Beijerinek (1898)
• W.M. Stanley (1935)
• TMV : RNA virus
• Bacteriophage (ds DNA)
• Viroids : T.O. Diener (1971), Low molecular weight, Lack protein coat, Free RNA (potato spindle tuber disease)
• Prions : Abnormally folded protein (BSE, CJD)

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Question 1: Which of the following criteria was used by Aristotle for the classification of animals?

1. a) Presence or absence of cell wall.
2. b) Presence or absence of red blood.
3. c) Mode of nutrition and reproduction.
4. d) Body organization and habitat.

Answer: b.

Question 2: According to Aristotle's classification, plants were divided into which of the following categories?

1. a) Algae, Bryophytes, Pteridophytes.
2. b) Trees, Shrubs, Herbs.
3. c) Monocots and Dicots.
4. d) Autotrophs and Heterotrophs.

Answer: b.

Question 3: The two-kingdom classification system proposed by Linnaeus grouped organisms primarily into:

1. a) Prokaryotes and Eukaryotes.
2. b) Plantae and Animalia.
3. c) Monera and Protista.
4. d) Autotrophs and Heterotrophs.

Answer: b.

Question 4: Which of the following is a major drawback of the Linnaean two-kingdom classification?

1. a) It correctly separated prokaryotes from eukaryotes.
2. b) It placed photosynthetic and non-photosynthetic organisms in different kingdoms.
3. c) It grouped bacteria, fungi, and angiosperms together under plants.
4. d) It distinguished unicellular organisms from multicellular ones.

Answer: c.

Question 5: In the two-kingdom classification, Chlamydomonas and Spirogyra were placed under:

1. a) Fungi.
2. b) Animalia.
3. c) Protista.
4. d) Algae.

Answer: d.

Question 6: The five-kingdom classification system was proposed by:

1. a) Carolus Linnaeus.
2. b) Aristotle.
3. c) R.H. Whittaker.
4. d) Louis Pasteur.

Answer: c.

Question 7: Which of the following kingdoms is NOT a part of R.H. Whittaker’s five-kingdom classification?

1. a) Monera.
2. b) Protista.
3. c) Archaea.
4. d) Fungi.

Answer: c.

Question 8: What is the primary characteristic used to differentiate heterotrophic fungi from autotrophic green plants in Whittaker's classification?

1. a) Mode of reproduction.
2. b) Difference in cell wall composition.
3. c) Presence of a nuclear membrane.
4. d) Cellular organization.

Answer: b.

Question 9: Under the five-kingdom classification, all prokaryotic organisms were grouped together under Kingdom:

1. a) Protista.
2. b) Fungi.
3. c) Monera.
4. d) Animalia.

Answer: c.

Question 10: Which of the following shapes correctly describes a 'Bacillus' bacterium?

1. a) Spherical.
2. b) Comma-shaped.
3. c) Spiral.
4. d) Rod-shaped.

Answer: d.

Question 11: A spherical-shaped bacterium is known as:

1. a) Coccus.
2. b) Vibrium.
3. c) Spirillum.
4. d) Bacillus.

Answer: a.

Question 12: Archaebacteria differ from eubacteria primarily in having a:

1. a) Distinct mode of reproduction.
2. b) Different cell wall structure.
3. c) True nucleus.
4. d) Multicellular organization.

Answer: b.

Question 13: Archaebacteria that thrive in extremely salty areas are called:

1. a) Thermoacidophiles.
2. b) Methanogens.
3. c) Halophiles.
4. d) Cyanobacteria.

Answer: c.

Question 14: Which group of Archaebacteria is typically found in hot springs?

1. a) Halophiles.
2. b) Thermoacidophiles.
3. c) Methanogens.
4. d) Actinomycetes.

Answer: b.

Question 15: Methanogens are predominantly found in which of the following habitats?

1. a) Hot springs.
2. b) Extreme salty areas.
3. c) Marshy areas and guts of ruminants.
4. d) Deep ocean vents.

Answer: c.

Question 16: The presence of which bacteria is responsible for the production of methane gas from the dung of ruminant animals?

1. a) Halophiles.
2. b) Thermoacidophiles.
3. c) Methanogens.
4. d) Cyanobacteria.

Answer: c.

Question 17: Which of the following is NOT categorized as a true bacterium (Eubacterium)?

1. a) Cyanobacteria.
2. b) Mycoplasma.
3. c) Halophile.
4. d) Nostoc.

Answer: c.

Question 18: Which of the following diseases is NOT caused by pathogenic eubacteria?

1. a) Cholera.
2. b) Typhoid.
3. c) Tetanus.
4. d) Malaria.

Answer: d.

Question 19: Citrus canker is a disease caused by:

1. a) Viruses.
2. b) Fungi.
3. c) Bacteria.
4. d) Viroids.

Answer: c.

Question 20: Blue-green algae belong to which of the following groups?

1. a) Protista.
2. b) Fungi.
3. c) Eubacteria.
4. d) Plantae.

Answer: c.

Question 21: Cyanobacteria are characterized by their mode of nutrition as:

1. a) Chemosynthetic autotrophs.
2. b) Photosynthetic autotrophs.
3. c) Saprophytic heterotrophs.
4. d) Parasitic heterotrophs.

Answer: b.

Question 22: Specialized cells in Nostoc and Anabaena that help in nitrogen fixation are called:

1. a) Akinetes.
2. b) Heterocysts.
3. c) Hormogonia.
4. d) Endospores.

Answer: b.

Question 23: The majority of heterotrophic bacteria in nature act as:

1. a) Predators.
2. b) Decomposers.
3. c) Primary producers.
4. d) Chemoautotrophs.

Answer: b.

Question 24: Chemosynthetic autotrophic bacteria play a great role in recycling nutrients such as:

1. a) Carbon, Hydrogen, Oxygen.
2. b) Nitrogen, Phosphorus, Iron, Sulfur.
3. c) Calcium, Magnesium, Potassium.
4. d) Sodium, Chlorine, Zinc.

Answer: b.

Question 25: Which of the following organisms completely lacks a cell wall?

1. a) Cyanobacteria.
2. b) Mycoplasma.
3. c) Yeast.
4. d) Diatoms.

Answer: b.

Question 26: Mycoplasma organisms are known for being:

1. a) Obligate aerobes.
2. b) Facultative anaerobes that can survive without oxygen.
3. c) Photosynthetic autotrophs.
4. d) Having a rigid chitinous cell wall.

Answer: b.

Question 27: Which of the following statements about Kingdom Protista is correct?

1. a) The boundaries of this kingdom are strictly defined.
2. b) It includes all prokaryotic microorganisms.
3. c) The boundaries of this kingdom are not well defined.
4. d) It exclusively consists of multicellular eukaryotes.

Answer: c.

Question 28: Chrysophytes include which of the following organisms?

1. a) Diatoms and golden algae (desmids).
2. b) Dinoflagellates and euglenoids.
3. c) Slime moulds and protozoans.
4. d) Amoeba and paramecium.

Answer: a.

Question 29: Organisms that float passively in water currents are collectively termed as:

1. a) Nekton.
2. b) Benthos.
3. c) Plankton.
4. d) Periphyton.

Answer: c.

Question 30: Golden algae are also commonly known as:

1. a) Diatoms.
2. b) Desmids.
3. c) Dinoflagellates.
4. d) Euglenoids.

Answer: b.

Question 31: The phenomenon of 'red tides' is typically caused by the rapid multiplication of:

1. a) Desmids.
2. b) Diatoms.
3. c) Red dinoflagellates (like Gonyaulax).
4. d) Slime moulds.

Answer: c.

Question 32: Euglenoids differ from plants as their body is covered by a protein-rich layer called:

1. a) Cell wall.
2. b) Pellicle.
3. c) Capsule.
4. d) Slime layer.

Answer: b.

Question 33: Under suitable conditions, slime moulds form an aggregation known as:

1. a) Pseudoplasmodium.
2. b) Plasmodium.
3. c) Fruiting body.
4. d) Mycelium.

Answer: b.

Question 34: Protozoans are generally considered as the primitive relatives of:

1. a) Plants.
2. b) Fungi.
3. c) Animals.
4. d) Bacteria.

Answer: c.

Question 35: All protozoans exhibit which of the following modes of nutrition?

1. a) Autotrophic.
2. b) Heterotrophic (Predators or parasites).
3. c) Chemosynthetic.
4. d) Mixotrophic.

Answer: b.

Question 36: Amoeba and Entamoeba belong to which group of protozoans?

1. a) Ciliated protozoans.
2. b) Flagellated protozoans.
3. c) Amoeboid protozoans.
4. d) Sporozoans.

Answer: c.

Question 37: Trypanosoma is an example of which type of protozoan?

1. a) Amoeboid.
2. b) Flagellated.
3. c) Ciliated.
4. d) Sporozoan.

Answer: b.

Question 38: Paramecium is a classic example of:

1. a) Flagellated protozoans.
2. b) Ciliated protozoans.
3. c) Amoeboid protozoans.
4. d) Sporozoans.

Answer: b.

Question 39: The malarial parasite, Plasmodium, is classified under:

1. a) Sporozoans.
2. b) Ciliated protozoans.
3. c) Flagellated protozoans.
4. d) Dinoflagellates.

Answer: a.

Question 40: Which kingdom shows a great diversity in both morphology and habitat?

1. a) Monera.
2. b) Fungi.
3. c) Plantae.
4. d) Animalia.

Answer: b.

Question 41: White spots seen on mustard leaves are typically caused by a parasitic:

1. a) Bacterium.
2. b) Virus.
3. c) Fungus.
4. d) Alga.

Answer: c.

Question 42: Penicillium is primarily known as a source of:

1. a) Methane gas.
2. b) Antibiotics.
3. c) Nitrogen fixation.
4. d) Red tides.

Answer: b.

Question 43: Which unicellular fungus is widely used in making bread and beer?

1. a) Mucor.
2. b) Rhizopus.
3. c) Yeast.
4. d) Albugo.

Answer: c.

Question 44: The rust disease in wheat is caused by:

1. a) Ustilago.
2. b) Puccinia.
3. c) Alternaria.
4. d) Trichoderma.

Answer: b.

Question 45: A symbiotic association between a fungus and an alga is called:

1. a) Mycorrhiza.
2. b) Lichen.
3. c) Plasmodium.
4. d) Fruiting body.

Answer: b.

Question 46: In a lichen, the fungal component is scientifically termed as:

1. a) Phycobiont.
2. b) Mycobiont.
3. c) Parasite.
4. d) Saprophyte.

Answer: b.

Question 47: Mycorrhiza is a symbiotic association between:

1. a) Fungi and algae.
2. b) Fungi and roots of higher plants.
3. c) Bacteria and roots of higher plants.
4. d) Bacteria and fungi.

Answer: b.

Question 48: Phycomycetes are also commonly known as:

1. a) Sac fungi.
2. b) Club fungi.
3. c) Algal fungi.
4. d) Imperfect fungi.

Answer: c.

Question 49: The mycelium in Phycomycetes is characterized as:

1. a) Septate and branched.
2. b) Aseptate and coenocytic.
3. c) Septate and unbranched.
4. d) Unicellular.

Answer: b.

Question 50: Which of the following belongs to the group Phycomycetes?

1. a) Penicillium.
2. b) Agaricus.
3. c) Rhizopus (bread mould).
4. d) Alternaria.

Answer: c.

Question 51: Albugo is a parasitic fungus found on:

1. a) Wheat.
2. b) Rice.
3. c) Mustard.
4. d) Potato.

Answer: c.

Question 52: Ascomycetes are commonly referred to as:

1. a) Club-fungi.
2. b) Sac-fungi.
3. c) Algal-fungi.
4. d) Imperfect-fungi.

Answer: b.

Question 53: Which of the following is a multicellular member of Ascomycetes?

1. a) Yeast.
2. b) Penicillium.
3. c) Mucor.
4. d) Ustilago.

Answer: b.

Question 54: Which fungus is extensively used in biochemical and genetic work?

1. a) Claviceps.
2. b) Aspergillus.
3. c) Neurospora.
4. d) Alternaria.

Answer: c.

Question 55: Morels and truffles are edible fungi belonging to the class:

1. a) Phycomycetes.
2. b) Ascomycetes.
3. c) Basidiomycetes.
4. d) Deuteromycetes.

Answer: b.

Question 56: Basidiomycetes are commonly known as:

1. a) Sac fungi.
2. b) Imperfect fungi.
3. c) Mushrooms and bracket fungi.
4. d) Algal fungi.

Answer: c.

Question 57: Smut disease is caused by which of the following organisms?

1. a) Puccinia.
2. b) Ustilago.
3. c) Agaricus.
4. d) Rhizopus.

Answer: b.

Question 58: Agaricus is the scientific name for:

1. a) Smut fungus.
2. b) Rust fungus.
3. c) Mushroom.
4. d) Bread mould.

Answer: c.

Question 59: Deuteromycetes are called 'imperfect fungi' because:

1. a) They lack a cell wall.
2. b) Only their asexual or vegetative phases are known.
3. c) They cannot reproduce.
4. d) They only reproduce sexually.

Answer: b.

Question 60: Which of the following fungi belongs to Deuteromycetes?

1. a) Alternaria.
2. b) Ustilago.
3. c) Puccinia.
4. d) Claviceps.

Answer: a.

Question 61: Colletotrichum and Trichoderma are examples of which fungal class?

1. a) Ascomycetes.
2. b) Phycomycetes.
3. c) Basidiomycetes.
4. d) Deuteromycetes.

Answer: d.

Question 62: Bladderwort and Venus flytrap are examples of:

1. a) Parasitic plants.
2. b) Partially heterotrophic insectivorous plants.
3. c) Saprophytic plants.
4. d) Chemosynthetic plants.

Answer: b.

Question 63: Cuscuta is a plant that exhibits which mode of nutrition?

1. a) Autotrophic.
2. b) Insectivorous.
3. c) Parasitic.
4. d) Saprophytic.

Answer: c.

Question 64: Viruses are generally considered as:

1. a) Facultative parasites.
2. b) Obligate parasites.
3. c) Saprophytes.
4. d) Symbionts.

Answer: b.

Question 65: The term 'Virus' was originally coined by:

1. a) D.J. Ivanowsky.
2. b) Louis Pasteur.
3. c) M.W. Beijerinck.
4. d) W.M. Stanley.

Answer: b.

Question 66: Who recognized certain microbes as the causal organism of the mosaic disease of tobacco in 1892?

1. a) Louis Pasteur.
2. b) W.M. Stanley.
3. c) D.J. Ivanowsky.
4. d) T.O. Diener.

Answer: c.

Question 67: The phrase "Contagium vivum fluidum" was proposed by:

1. a) D.J. Ivanowsky.
2. b) M.W. Beijerinck.
3. c) W.M. Stanley.
4. d) T.O. Diener.

Answer: b.

Question 68: In 1935, who showed that viruses could be crystallized?

1. a) Pasteur.
2. b) Ivanowsky.
3. c) Beijerinck.
4. d) W.M. Stanley.

Answer: d.

Question 69: The genetic material present in the Tobacco Mosaic Virus (TMV) is:

1. a) Single-stranded DNA.
2. b) Double-stranded DNA.
3. c) RNA.
4. d) Protein.

Answer: c.

Question 70: A virus that primarily attacks bacteria is known as a:

1. a) Viroid.
2. b) Prion.
3. c) Bacteriophage.
4. d) Cyanophage.

Answer: c.

Question 71: The genetic material typical of a bacteriophage is:

1. a) Single-stranded RNA.
2. b) Double-stranded RNA.
3. c) Single-stranded DNA.
4. d) Double-stranded DNA.

Answer: d.

Question 72: Viroids were discovered in the year 1971 by:

1. a) M.W. Beijerinck.
2. b) W.M. Stanley.
3. c) T.O. Diener.
4. d) D.J. Ivanowsky.

Answer: c.

Question 73: Which of the following is a defining feature of a viroid compared to a virus?

1. a) High molecular weight.
2. b) Presence of a protein coat.
3. c) Lack of a protein coat (free RNA).
4. d) Contains double-stranded DNA.

Answer: c.

Question 74: Viroids are responsible for causing which of the following diseases?

1. a) Tobacco mosaic disease.
2. b) Potato spindle tuber disease.
3. c) Citrus canker.
4. d) Cholera.

Answer: b.

Question 75: Prions are infectious agents that are essentially made of:

1. a) Abnormally folded proteins.
2. b) Free RNA.
3. c) Double-stranded DNA.
4. d) Lipids and carbohydrates.

Answer: a.

Question 76: Which of the following diseases in cattle is caused by prions?

1. a) Tetanus.
2. b) Bovine Spongiform Encephalopathy (BSE).
3. c) Citrus canker.
4. d) Typhoid.

Answer: b.

Question 77: The human equivalent of the BSE disease caused by prions is called:

1. a) Alzheimer's disease.
2. b) Creutzfeldt-Jakob disease (CJD).
3. c) Parkinson's disease.
4. d) Huntington's disease.

Answer: b.

Question 78: Identify the incorrect statement regarding Linnaeus's classification.

1. a) It classified organisms into Plantae and Animalia.
2. b) It did not distinguish between eukaryotes and prokaryotes.
3. c) It separated fungi from photosynthetic plants.
4. d) It placed Chlamydomonas and Spirogyra under algae.

Answer: c.

Question 79: Which feature led to the placement of bacteria and cyanobacteria in different groups compared to higher plants in modern classifications?

1. a) They have a different cell wall composition.
2. b) They are prokaryotic in nature.
3. c) They perform photosynthesis.
4. d) They are multicellular.

Answer: b.

Question 80: According to Whittaker’s classification, single-celled eukaryotes are placed under:

1. a) Monera.
2. b) Protista.
3. c) Fungi.
4. d) Animalia.

Answer: b.

Question 81: Statement A: Mycoplasma are organisms that completely lack a cell wall. Statement B: They are the smallest living cells and can survive without oxygen.

1. a) Only Statement A is correct.
2. b) Only Statement B is correct.
3. c) Both Statement A and Statement B are correct.
4. d) Both statements are incorrect.

Answer: c.

Question 82: The protein-rich layer that makes the body of Euglena flexible is known as:

1. a) Cell membrane.
2. b) Cell wall.
3. c) Pellicle.
4. d) Capsid.

Answer: c.

Question 83: Under unfavorable conditions, the plasmodium of slime moulds differentiates to form:

1. a) Fruiting bodies bearing spores.
2. b) Flagellated gametes.
3. c) A protective pellicle.
4. d) Heterocysts.

Answer: a.

Question 84: Match the protozoan with its locomotor structure: Trypanosoma.

1. a) Pseudopodia.
2. b) Cilia.
3. c) Flagella.
4. d) None of the above.

Answer: c.

Question 85: The fungal cell wall is primarily composed of:

1. a) Cellulose and pectin.
2. b) Peptidoglycan.
3. c) Chitin and polysaccharides.
4. d) Hemicellulose.

Answer: c.

Question 86: A symbiotic association where both organisms mutually benefit is seen in:

1. a) Cuscuta on hedge plants.
2. b) Puccinia on wheat.
3. c) Albugo on mustard.
4. d) Lichens (algae and fungi).

Answer: d.

Question 87: The group of fungi characterized by aseptate and coenocytic mycelium is:

1. a) Ascomycetes.
2. b) Phycomycetes.
3. c) Basidiomycetes.
4. d) Deuteromycetes.

Answer: b.

Question 88: Claviceps, a member of Ascomycetes, is primarily known for:

1. a) Being an edible mushroom.
2. b) Its use in extensive genetic work.
3. c) Causing ergot disease and yielding hallucinogenic drugs.
4. d) Being a source of early antibiotics like Penicillin.

Answer: c.

Question 89: Which class of fungi is known for reproducing exclusively by asexual spores known as conidia?

1. a) Phycomycetes.
2. b) Ascomycetes.
3. c) Basidiomycetes.
4. d) Deuteromycetes.

Answer: d.

Question 90: Which plant is an example of an insectivorous plant that is partially heterotrophic?

1. a) Cuscuta.
2. b) Venus flytrap.
3. c) Spirogyra.
4. d) Puccinia.

Answer: b.

Question 91: The term 'Contagium vivum fluidum' translates to:

1. a) Infectious living fluid.
2. b) Crystallized virus.
3. c) Dead bacterial extract.
4. d) Free naked RNA.

Answer: a.

Question 92: The protein coat of viruses that protects the nucleic acid is called:

1. a) Pellicle.
2. b) Capsid.
3. c) Myelin.
4. d) Peptidoglycan.

Answer: b.

Question 93: Prions lack which of the following biological macromolecules entirely?

1. a) Proteins.
2. b) Nucleic acids.
3. c) Amino acids.
4. d) Peptides.

Answer: b.

Question 94: Which of the following is considered an acellular organism?

1. a) Bacteria.
2. b) Mycoplasma.
3. c) Viruses.
4. d) Yeast.

Answer: c.

Question 95: PPLO stands for Pleuropneumonia-like organisms, which is another name for:

1. a) Cyanobacteria.
2. b) Archaebacteria.
3. c) Mycoplasma.
4. d) Viroids.

Answer: c.

Question 96: Nostoc and Anabaena fix atmospheric nitrogen using specialized cells called:

1. a) Hormogonia.
2. b) Akinetes.
3. c) Heterocysts.
4. d) Endospores.

Answer: c.

Question 97: Desmids are grouped under which category of Protista?

1. a) Dinoflagellates.
2. b) Chrysophytes.
3. c) Euglenoids.
4. d) Slime moulds.

Answer: b.

Question 98: Which of the following protozoans is responsible for causing sleeping sickness?

1. a) Amoeba.
2. b) Paramecium.
3. c) Trypanosoma.
4. d) Plasmodium.

Answer: c.

Question 99: Bread mould is the common name for which fungus?

1. a) Mucor.
2. b) Rhizopus.
3. c) Agaricus.
4. d) Penicillium.

Answer: b.

Question 100: The viral disease commonly caused by an RNA virus in plants is:

1. a) Cholera.
2. b) Typhoid.
3. c) Tobacco Mosaic Disease.
4. d) Tetanus.

Answer: c.

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