Tag: classification of fungi

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Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

Yeast like budding of Oidia in Mucor/ Rhizopus is called :

  1. Palmella

  2. Chantransia

  3. Torula

  4. Gongrosira
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
In liquid medium, rich in sugar and acidic pH, the hyphae of Rhizopus/Mucor produce small rounded oidia, which multiply by budding like yeast. This budding condition is called torula stage.
So, the correct answer is Torula'
Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

How many of the given fungi are saprophytes in nutrition?

Rhizopus, Puccinia, Albugo Mucor, Saccharomyces

  1. Two

  2. Three

  3. Four

  4. Five
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Out of the given fungi, Rhizopus, Mucor, and Saccharomyces are saprophytes. Puccinia is an obligate parasite causing rust disease in plants, and Albugo is a parasitic fungus causing white rust on crucifers. Thus, exactly three of them are saprophytic in nutrition.

Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

'Ergot' is obtained from

  1. Puccinia

  2. Rhizopus

  3. Claviceps

  4. Yeast
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Ergot are the alkaloids obtained from ergot fungi Claviceps purpurea which grow on rye plant. These fungi cause ergot of rye, a fungal disease in plants. The sclerotia of ergot fungi contain alkaloids which are used to produce LSD (Lysergic acid diethylamide) drugs that act on CNS (Central nervous system). They are natural hallucinogens and change mood, behaviour and thoughts like in psychosis, a condition in which thoughts and emotions are affected to such an extent that contact is lost with reality. 
So, the correct answer is 'Claviceps'.
Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

Mucor belongs to .......... sub-division of Eumycota.

  1. Mastigomycotina

  2. Ascomycotina

  3. Zygomycotina

  4. Deuteromycotina
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Zygomycotina is composed of organisms that are characterized by the formation of ribbon-like aseptate hyphae and sexual reproduction with the formation of zygospores. The vast majority of human zygomycotic disease is caused by the members of the family Mucoraceae. This family includes zygomycetes that produce asexual sporangiospores in sporangia. Sporangium producers which may or may not produce stolons and rhizoids and included in the genera Mucor and Rhizomucor. Thus, the correct answer is option 'Zygomycotina'.  

Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

Ergot (of Rye) is obtained from

  1. Claviceps purpurea

  2. Puccinia graminis

  3. Alternaria solanii

  4. Fusarium oxysporum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ergot of Rye is a plant disease that is caused by the fungus Claviceps purpurea. The so-called ergot that replaces the grain of the rye is a dark, purplish sclerotium.

Therefore A is correct option. 

Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

Claviceps purpurea is casual organism of 

  1. Smut of Barley

  2. Rust of Wheat

  3. Ergot of Rye

  4. Powdery Mildew of Pea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Claviceps purpurea is the fungal pathogen causing ergot disease of rye. It infects rye grains, producing sclerotia containing toxic alkaloids. Smut (Ustilago), rust (Puccinia), and powdery mildew (various fungi) are different plant diseases.

Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

Which saprotroph is similar in appearance to the Mucor?

  1. Penicillium

  2. Neurospora

  3. Rhizopus

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mucor and Rhizopus are fungi belonging to the family Mucoraceae. Mucor is called as pin mould. Rhizopus is known as black mould. They are saprophytic fungi that grow on dead and decaying organic material. The fungal mycelium of Mucor and Rhizopus look like fine cottony threads on the surface of the bread. Thus the correct answer is option C.