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12th Biology Weekly Test - 4 ( Zoology - Microbes in Human Welfare )

St. Britto Hr. Sec. School - Madurai

12th Biology Weekly Test - 4 ( Zoology - Microbes in Human Welfare )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

____________ is not a part of MFC.

Bacteria
Semi permeable Membrane
Cathode
Electric circuit

Cry toxins obtained from Bacillus thuringiensis are effective against for______

Mosquitoes
Flies
Nematodes
Bollworms

Which of the following is not involved in nitrogen fixation?

Pseudomonas
Azotobacter
Anabaena
Nostac

_________________ got from fungi is used as an immune suppressant in organ transplantation.

Statin
Cyclosporin A
Insulin
Protease

Asper$illus niger helps to produce ___________.

Citric acid
Acetic acid
Turmeric acid
Lactic acid

___________ is free living bacteria which acts as a biofertilizer.

Azospirillum
Nostoc
Oscillatoria
Glomus

Identify the free liviiig nitrogen fixing bacteria _____________.

Azotobacter
Rhizobium
Glomus
Ideonella sakaiensis

Mycorrhiza cannot contribute to this process.

Resistance to pathogens
Tolerance to salinity
Help to fix nitrogen
Enhance plant growth

CO₂ is not released during

Alcoholic fermentation
Lactate fermentation
Aerobic respiration in animals
Aerobic respiration in plants

The first bio herbicide was got from ______________.

Trichoderma
Phytophthora species
Bacillus
Aspergillus

Lactobacillus helps to produce _____________.

Citric acid
Milk
Acetic acid
Butyric acid

Rhizopus oryzae can produce ___________

Fumaric acid
Malic acid
Acetic acid
Citric acid

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

Soyameal
Groundgram
Molasses
Corn meal

A free living fungi which is a biocontrol agent _______ .

Phytophthora palmivora
Trichoderma
Polyporus
Peziza

The gases produced in anaerobic sludge digesters are

Methane, oxygen and hydrogen sulphide
Hydrogen sulphide, methane and sulphur dioxide
Hydrogen sulphide, nitrogen and methane
Methane, hydrogen sulphide and CO₂.

Cyclosporin – A is an immunosuppressive drug produced from _______

Aspergillus niger
Manascus purpureus
Penicillium notatum
Trichoderma polysporum

____________ is a prokaryotic organism helping to improve fertility of the soil.

Glomus
Azolla
legume
Tolypothrix

The enzyme _____________ is got from Aspergillus.

Rennet
Zymase
Amylase
Lipase

Biofertilizers are not involved in this process

increase water holding capacity of soil
Help to degrade pollutants
Provide nutrients
Improve soil texture

World Biofuel day is observed on ___________.

l0^th September
22^nd April
l0^th August
l7^th October

The purpose of biological treatment of waste water is to _______

Reduce BOD
Increase BOD
Reduce sedimentation
Increase sedimentation

Genetically engineered______________ are used as dot buster in cardiac related issues.

Staphylococcus
Yeast
Penicillium
Streptococci

____________ is not a biocontrol agent.

Trichoderma
Dragonfly
Glomus
Buculovirus

Which of the following pair is correctly

Acetobacter aceti - Antibiotics
Methanobacterium - Lactic acid
Penicilium notatum - Acetic acid
Saccharomyces cerevisiae - Ethanol

_________________ is not used as a biofertilizer.

Bacillus thuringiensis
Rhizobium
Nostoc
Anabaena

Which of the following microorganism is used for production of citric acid in industries?

Lactobacillus bulgaris
Penicillium citrinum
Aspergillus niger
Rhizopus nigricans

Plants used for bio-diesel production _________

Anabaena
Jatropha
Pongamia
b and c

The cry toxin affects ___________ system of insect pests.

Nervous system
Respiratory system
Digestive system
Reproductive system

Corn \(\overset { A }{ \rightarrow } \) Fermentable sugars \(\overset { B }{ \rightarrow } \) Ethanol. Find out A and B for above statement.

A - Agaricus, B - Sarcina
A - Zymomonas, B - Vinegar
A - Rhizopus, B - Aspergillus
A - Aspergillus, B - Yeast

___________ is used for recycling of PET plastics.

Dechloromonas aromatica
Phanerochaete chrysosporium
Ideonella sakaiensis
Nitrosomonas

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