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1009 available questions

Biology · Question 941

Chemical agents used on non-living materials are called:

  1. Antiseptics
  2. Disinfectants
  3. Antibiotics
  4. All of these
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Correct answer: B

Disinfectants

The correct answer is Disinfectants.

Biology · Question 942

Microbial diseases can be controlled through:

  1. Vaccination
  2. Antisepsis
  3. Chemotherapy
  4. All these
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Correct answer: D

All these

The correct answer is All these.

Biology · Question 943

Trypanosoma causes which disease in humans?

  1. Malaria
  2. Sleeping sickness
  3. Dysentery
  4. Polio
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Correct answer: B

Sleeping sickness

The correct answer is Sleeping sickness.

Biology · Question 944

Choanoflagellates resemble the collar cells found in:

  1. Sponges
  2. Cnidarians
  3. Ciliates
  4. Actinopods
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Correct answer: A

Sponges

The correct answer is Sponges.

Biology · Question 945

Which algal phylum lacks motile cells?

  1. Euglenophyta
  2. Chlorophyta
  3. Rhodophyta
  4. Phaeophyta
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Correct answer: C

Rhodophyta

The correct answer is Rhodophyta.

Biology · Question 946

Molecular data suggest that which group is related to zooflagellates?

  1. Diatoms
  2. Euglenoids
  3. Dinoflagellates
  4. Kelps
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Correct answer: B

Euglenoids

The correct answer is Euglenoids.

Biology · Question 947

Which statement about fungal nutrition is not true?

  1. Some fungi are active predators
  2. Some fungi are mutualists
  3. Facultative parasitic fungi are host-specific
  4. All fungi require mineral nutrients
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Correct answer: C

Facultative parasitic fungi are host-specific

The correct answer is Facultative parasitic fungi are host-specific.

Biology · Question 948

Dikaryotic hyphae contain:

  1. Two haploid nuclei of the same strain
  2. Two haploid nuclei of different strains
  3. Two diploid nuclei
  4. One diploid and one haploid nucleus
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Correct answer: B

Two haploid nuclei of different strains

The correct answer is Two haploid nuclei of different strains.

Biology · Question 949

Why are smut fungi called smuts?

  1. Their spores resemble soot
  2. Their spore mass replaces wheat grains
  3. Ustilago is a common smut genus
  4. They cause loose smut of wheat
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Correct answer: A

Their spores resemble soot

The correct answer is Their spores resemble soot.

Biology · Question 950

Modern classification of imperfect fungi relies mainly on:

  1. Asexual spores
  2. DNA sequence
  3. Sexual spores
  4. All these
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Correct answer: B

DNA sequence

The correct answer is DNA sequence.