PYQSide ExamsMy practice

Microbes in Human Welfare · Question 31

AIPMT 2012 (Prelims)MCQEasy📈 Topic in 12% papers+4−1
1

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

  1. Azotobacter
  2. Aspergillus
  3. Glomus
  4. Trichoderma

Answer

(3) Glomus

Solution

As per NCERT, fungi form symbiotic associations with plants (mycorrhiza). Many members of the genus Glomus form mycorrhiza.

⇒ The fungal symbiont absorbs phosphorus from the soil and passes it to the plant.

∵ Azotobacter is a free-living nitrogen fixer, Trichoderma is a free-living biocontrol fungus and Aspergillus is a saprophytic mould ⇒ none of them is symbiotic.

Answer: (3)

AIPMT 2012 (Prelims)

Keep practising — Microbes in Human Welfare

2

Monascus purpureus is a yeast used commercially in the production of:

  1. Ethanol
  2. Streptokinase for removing clots from the blood vessels
  3. Citric acid
  4. Blood cholesterol lowering statins
AIPMT 2012 (Prelims)
3

A patient brought to a hospital with myocardial infarction is normally immediately given

  1. Penicillin
  2. Streptokinase
  3. Cyclosporin A
  4. Statins
AIPMT 2012 (Prelims)
4

A nitrogen-fixing microbe associated with Azolla in rice fields is

  1. Tolypothrix
  2. Spirulina
  3. Frankia
  4. Anabaena
AIPMT 2012 (Prelims)
5

Which one of the following is an example of carrying out biological control of pests/diseases using microbes?

  1. Trichoderma sp. against certain plant pathogens
  2. Ladybird beetle against aphids in mustard
  3. Nucleopolyhedrovirus against white rust in Brassica
  4. Bt-cotton to increase cotton yield
AIPMT 2012 (Prelims)
6

Yeast is used in the production of

  1. Citric acid and lactic acid
  2. Lipase and pectinase
  3. Bread and beer
  4. Cheese and butter
AIPMT 2012 (Prelims)
7

Read the following statement having two blanks (A and B): “A drug used for (A) patients is obtained from a species of the organism (B) .” The one correct option for the two blanks is:

  1. A Organ-transplant, B Trichoderma
  2. A AIDS, B Pseudomonas
  3. A Swine flu, B Monascus
  4. A Heart, B Penicillium
AIPMT 2011 (Mains)
8

Consider the following statements (A-D) about organic farming. Which of these statements are correct?

  1. (B) and (C) only
  2. (B), (C) and (D)
  3. (C) and (D) only
  4. (A) and (B) only
AIPMT 2011 (Mains)
9

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?

  1. Acetobacter aceti – acetic acid
  2. Clostridium butylicum – lactic acid
  3. Aspergillus niger – citric acid
  4. Yeast – statins
AIPMT 2011 (Mains)
10

The most common substrate used in distilleries for the production of ethanol is :

  1. Ground gram
  2. Molasses
  3. Soyabean
  4. Corn meal
AIPMT 2011 (Prelims)
11

Which one of the following is not a biofertilizer ?

  1. Agrobacterium
  2. Nostoc
  3. Rhizobium
  4. Mycorrhiza
AIPMT 2011 (Prelims)

All Microbes in Human Welfare PYQs →

PDFDownload Microbes in Human Welfare PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)