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12th Biology Weekly Test - 2 ( Zoology - Microbes in Human Welfare )

St. Britto Hr. Sec. School - Madurai

12th Biology Weekly Test - 2 ( Zoology - Microbes in Human Welfare )-Aug 2020

Time : 1.30 Hours

Part - A

Multiple Choice Question - Answer All Question

____________ is not a biocontrol agent.

Trichoderma
Dragonfly
Glomus
Buculovirus

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

Staphylococcus
Yeast
Penicillium
Streptococci

Identify the free liviiig nitrogen fixing bacteria _____________.

Azotobacter
Rhizobium
Glomus
Ideonella sakaiensis

The cry toxin affects ___________ system of insect pests.

Nervous system
Respiratory system
Digestive system
Reproductive system

World Biofuel day is observed on ___________.

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

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.

A free living fungi which is a biocontrol agent _______ .

Phytophthora palmivora
Trichoderma
Polyporus
Peziza

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

Soyameal
Groundgram
Molasses
Corn meal

____________ is not a part of MFC.

Bacteria
Semi permeable Membrane
Cathode
Electric circuit

_________________ is not used as a biofertilizer.

Bacillus thuringiensis
Rhizobium
Nostoc
Anabaena

Mycorrhiza cannot contribute to this process.

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

Which of the following pair is correctly

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

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

Statin
Cyclosporin A
Insulin
Protease

CO₂ is not released during

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

Which of the following bacteria is used extensively as a bio-pesticide?

Bacillus thurigiensis
Bacillus subtilis
Lactobacillus acidophilus
Streptococcus lactis

___________ is used for recycling of PET plastics.

Dechloromonas aromatica
Phanerochaete chrysosporium
Ideonella sakaiensis
Nitrosomonas

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

The first bio herbicide was got from ______________.

Trichoderma
Phytophthora species
Bacillus
Aspergillus

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

Glomus
Azolla
legume
Tolypothrix

Plants used for bio-diesel production _________

Anabaena
Jatropha
Pongamia
b and c

Part - B

Generic 5 - Answer All Question

Write short notes on the following.
a) Brewer's yeast
b) Ideonella sakaiensis
c) Microbial fuel cells

Explain the working of a biogas plant.

When does antibiotic resistance develop?

Explain the process of sewage treatment.

What is the key difference between primary and secondary sewage treatment?

List the advantages of biogas plants in rural areas.

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