Biological Classification Test

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Biological Classification Test - 76

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Weekly Quiz Competition

Question 1
1 / -0

Choose the correct answers from the alternatives given.
Penicillin was discovered by

A
Alexander Fleming

B
A F Blakeslee

C
K C Mehta

D
Alexopoulos and Martin

Solution

Alexander Fleming accidentally discovered penicillin in his lab when he saw a green mold in the petri dish.
So, the correct option is 'Alexander Fleming'.
Question 2
1 / -0

Choose the correct answers from the alternatives given.
Which of the following is a material from which cell walls or shells of various protists are composed?

A
Glycogen

B
Floridean starch

C
Alginic acid

D
Leucosin

Solution

The cell walls of protists composed of cellulose and alginic acid which is the same as pectin, alginic acid help to retain water and prevent seawood from drying out when exposed to air at low tide.
So, the correct option is 'Alginic acid'.
Question 3
1 / -0

Choose the correct answers from the alternatives given.
Zygospores are not generally formed in cultures of Rhizopus developed from a single spore due to:

A
absence of (+) and (-) strains of hyphae

B
presence of (+) and (-) strains of hyphae

C
shortage of nutrients

D
presence of light

Solution

Zygospore is formed by the fusion of haploid spores of the opposite strain of hyphae and the culture which is developed from single spore can not have hyphae of other strain.
So, the correct option is 'absence of (+) and (-) strains of hyphae'.
Question 4
1 / -0

.Which of the following is not a correct statement?

A
Animals are heterotrophic and take in food by ingestion while fungi are heterotrophic and take in food by absorption.

B
Plants have cell walls of cellulose; fungi have cell walls of chitin.

C
The energy reserve of fungi is starch while the energy reserve of animals is glycogen.

D
Fungi lack flagella at all stages of their life while most protists have a stage that possesses flagella.

Solution

Reserve food material in all the fungi is glycogen and oil but not starch.
So, the correct option is 'Energy reserve of fungi is starch while the energy reserve of animals is glycogen.'
Question 5
1 / -0

Choose the correct answers from the alternatives given.
Which of the following structures are associatcd with asexual reproduction in fungi

A
Ascospores

B
Zygosporangia

C
Basidiospores

D
Conidia
Solution
1. Ascospores are sexual spores in ascomycetes.
2. Zygosporangia is formed after fertilization so it is included in sexual reproduction.
3. Basidiomycetes have sexual spores named as basidiospores.
4. Conidia are asexual spores at the tip of the specialized hypha.
So, the correct option is 'Conidia'.
Question 6
1 / -0

Choose the correct answers from the alternatives given.
Which one of the following is an example of mutualism?

A
Crown gall

B
Lichens

C
Hypertrophy

D
Damping off

Solution

Mutualism is a positive interaction in which both partners are benefited. Lichens are the mutualistic association of fungi and cyanobacteria in which both are benefited.
So, the correct option is 'Lichens'.
Question 7
1 / -0

Choose the correct answers from the alternatives given.
Which one of the following is not sac fungi?

A
Truffles

B
Morels

C
Toadstools

D
Yeasts

Solution

Ascomycetes are called sac fungi. Truffles, morels, and yeasts are the members of ascomycetes, while toadstool is a member of basidiomycetes.
So, the correct option is 'Toadstools'.
Question 8
1 / -0

Choose the correct answers from the alternatives given.
All fungi are

A
symbionts

B
heterotrophs

C
saprophytes

D
parasites

Solution

All fungi are heterotrophic as they can not prepare their own food. They are symbionts, saprophytes or parasites.
So, the correct option is 'heterotrophs'.
Question 9
1 / -0

In Rhizopus, sexual fusion takes place between two

A
Gametangia

B
Gametes

C
Sporangia

D
Hyphae

Solution

Rhizopus belongs to the class Phycomycetes of fungi. The sexual reproduction takes place by conjugation between two multinucleated but single-celled gametangia.
So, the correct answer is option A.
Question 10
1 / -0

Choose the correct answers from the alternatives given.
The first organism to be found on a bare rock formation is a

A
moss

B
lichen

C
fern

D
grass

Solution

Lichen forms a crust over bare rocks and starts forming soil from their organic remains by secreting carbonic acid which results in the chemical breakdown of rocks.
So, the correct option is 'lichen'.

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Re-Attempt Weekly Quiz Competition

Biological Classification Test - 76

Result

Biological Classification Test - 76

Score

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Rank

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SHARING IS CARING

Question 1

Alexander Fleming

A F Blakeslee

K C Mehta

Alexopoulos and Martin

Solution

Question 2

Glycogen

Floridean starch

Alginic acid

Leucosin

Solution

Question 3

absence of (+) and (-) strains of hyphae

presence of (+) and (-) strains of hyphae

shortage of nutrients

presence of light

Solution

Question 4

Animals are heterotrophic and take in food by ingestion while fungi are heterotrophic and take in food by absorption.

Plants have cell walls of cellulose; fungi have cell walls of chitin.

The energy reserve of fungi is starch while the energy reserve of animals is glycogen.

Fungi lack flagella at all stages of their life while most protists have a stage that possesses flagella.

Solution

Question 5

Ascospores

Zygosporangia

Basidiospores

Conidia

Solution

Question 6

Crown gall

Lichens

Hypertrophy

Damping off

Solution

Question 7

Truffles

Morels

Toadstools

Yeasts

Solution

Question 8

symbionts

heterotrophs

saprophytes

parasites

Solution

Question 9

Gametangia

Gametes

Sporangia

Hyphae

Solution

Question 10

moss

lichen

fern

grass

Solution

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