WorksheetsMold and Yeast
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
Which genus is known for causing rot in tomatoes and producing rancid flavors in dairy products?
a)
Fusarium
b)
Penicillium
c)
Rhizopus
d)
Alternaria
2.
What shape are the conidia of Fusarium species?
a)
Round
b)
Oval
c)
Sickle-shaped
d)
Rectangular
3.
Which fungus forms cottony growth and is associated with rot in citrus fruits?
a)
Alternaria
b)
Fusarium
c)
Penicillium
d)
Rhizopus
4.
Penicillium is widely distributed and forms what color of conidia?
a)
Red
b)
Gray
c)
Blue-green
d)
Black
5.
Which Penicillium species is involved in the ripening of Camembert cheese?
a)
Penicillium roqueforti
b)
Penicillium rubens
c)
Penicillium camemberti
d)
Penicillium nalgiovense
6.
Which mold causes soft rot of fruits and has green spores?
a)
Penicillium roqueforti
b)
Penicillium camemberti
c)
Penicillium nalgiovense
d)
Penicillium expansum
7.
Which mold species is known as the black bread mold?
a)
Rhizopus stolonifer
b)
Rhizopus nigricans
c)
Thamnidium elegans
d)
Alternaria tenuis
8.
Which mold is known to grow at or near 0°C and is called a 'whisker mold'?
a)
Rhizopus nigricans
b)
Thamnidium elegans
c)
Trichoderma viride
d)
Botrytis cinerea
9.
Which mold is used in enzyme, antibiotic, and biofuel production and has bright green mature mold?
a)
Alternaria tenuis
b)
Penicillium rubens
c)
Trichoderma viride
d)
Botrytis cinerea
10.
Botrytis cinerea is known for causing what condition in grapes?
a)
Noble rot
b)
Black rot
c)
Soft rot
d)
Gray mold
11.
What is the common name for Neurospora?
a)
Black bread mold
b)
Blue mold
c)
Green mold
d)
Red bread mold
12.
Which yeast is used in baking and alcoholic fermentation?
a)
Candida lipolyticum
b)
Saccharomyces cerevisiae
c)
Zygosaccharomyces rouxii
d)
Pichia membranaefaciens
13.
Which yeast forms pellicles in beer, wine, and brine?
a)
Candida
b)
Rhodotorula
c)
Torulopsis
d)
Pichia
14.
Which pigment-forming yeast can cause discoloration in foods?
a)
Candida
b)
Rhodotorula
c)
Pichia
d)
Torulopsis
15.
Which yeast is capable of fermenting lactose and causes spoilage of milk?
a)
Candida lipolyticum
b)
Pichia membranaefaciens
c)
Torulopsis versatilis
d)
Zygosaccharomyces bailii
16.
Candida can cause rancidity in which type of products?
a)
Meat and vegetables
b)
Grains and legumes
c)
Butter and dairy products
d)
Fruits and juices
17.
Which genus of yeast is highly osmotolerant and spoils high-sugar products?
a)
Candida
b)
Pichia
c)
Zygosaccharomyces
d)
Saccharomyces
18.
Which yeast can cause cloudiness in bottled wine by forming deposits?
a)
Pichia membranaefaciens
b)
Zygosaccharomyces bailii
c)
Rhodotorula glutinis
d)
Torulopsis utilis
19.
Which genus produces β-carotene and torulene used in food and cosmetics?
a)
Rhodotorula
b)
Pichia
c)
Candida
d)
Zygosaccharomyces
20.
Which mold produces collagenolytic enzymes that enhance beef tenderness?
a)
Penicillium
b)
Rhizopus
c)
Thamnidium
d)
Fusarium
21.
Which genus causes spoilage of cocoa and olives during fermentation?
a)
Saccharomyces
b)
Pichia
c)
Candida
d)
Torulopsis
22.
Which yeast produces killer toxins that eliminate other fungi?
a)
Zygosaccharomyces
b)
Pichia
c)
Candida
d)
Torulopsis
23.
Which mold is used in fermenting sausages?
a)
Penicillium roqueforti
b)
Penicillium camemberti
c)
Penicillium nalgiovense
d)
Penicillium rubens
24.
What enzyme produced by Rhodotorula is used for aspartame production?
a)
Protease
b)
Phenylalanine ammonia lyase
c)
Amylase
d)
Lipase
25.
Which yeast genus can spoil fruit juice concentrates?
a)
Zygosaccharomyces
b)
Candida
c)
Torulopsis
d)
Pichia
26.
Which mold is red in color and used to make red oncom?
a)
Trichoderma
b)
Neurospora
c)
Botrytis
d)
Rhizopus
27.
Which genus of yeast causes off-odors by producing acetic acid?
a)
Torulopsis
b)
Zygosaccharomyces
c)
Candida
d)
Rhodotorula
28.
Which mold is involved in spoilage of foods like berries and bread?
a)
Rhizopus nigricans
b)
Penicillium expansum
c)
Fusarium solani
d)
Alternaria tenuis
29.
Which species causes gray mold disease in plants?
a)
Neurospora sitophila
b)
Penicillium camemberti
c)
Botrytis cinerea
d)
Thamnidium elegans
30.
Which genus forms brush-like conidiophores?
a)
Fusarium
b)
Penicillium
c)
Trichoderma
d)
Rhizopus
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