Biological Classification Test

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Biological Classification Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

In five kingdom classification, which single kingdom contains blue-green algae, nitrogen-fixing bacteria and methanogenic archaebacteria

A
Monera

B
Protista

C
Plantae

D
Fungi

Solution

The five kingdom system proposedby R.H. Whittaker (1969).

The five kingdoms are: Monere, Protista, Fungi, Plantae, Animalia.

According to this:-

Monera contains:- All Unicellular prokaryotic organisms (Autotrophic & Heterotrophic), Monera includes all types of bacteria - blue green algae (cyanobacteria), nitrogen fixing bacteria, methanogenic archebacteria.

Protista contains:- Unicellur eukaryotic organisms.

Plantae contains:- All eukaryotic chlorophyll containing organisms (algae, bryophytes, pteridophytes, gymnosperms, angiosperms)

Fungi contains:- All fungi (achlorophyllous, eukaryotic, heterotrophic,spore producing, thalloid body).
Question 2
1 / -0

In five-kingdom classification, unicellular green algae are included in the kingdom

A
Metaphyta

B
Protista

C
Monera

D
Metazoa

Solution

Chlamydomonas & Chlorella (Examples of Unicellular green algae) are in Kingdom Protista as both are unicellular and eukaryotic.

Please note that Blue Green Algae(Cyanobacteria) is in Kingdom Monera. (prokaryotic)

Multicellular algae are in Kingdom Plantae(Metaphyta).

So, Algae are present in three kingdoms in 5 kingdom classification.
Question 3
1 / -0

Fungi usually stores the reserved food material in the form of

A
Starch

B
Lipid

C
Glycogen

D
Protein

Solution

The Fungi are eukaryotes, which may exist in nature as either single and multi-celled organisms, or in both at different points in the the life cycle. Fungi are usually found either as opportunistic saprophytes (living on dead organic matter) or in some parasitic or symbiotic relationship with plants or other autotroph.

Fungi digest food outside their bodies by releasing enzymes into the surrounding environment (exoenzymes), breaking down organic matter into a form the fungus can absorb food reserves stores as glycogen (like animals), not starch (like plants).
Question 4
1 / -0

Consider the following regarding the reasons for the fact that now Cyanobacteria are kept in Monera and not in Plantae:

I. They are prokaryotes.

II. The cell wall of cyanobacteria has peptidoglycan.

III. They can fix atomspheric nitrogen

The correct explanations would be:

A
I and II only

B
I and III only

C
II and III only

D
I, II and III

Solution

The only confusion can be choice III. Only prokaryotes can fix atmospheric nitrogen.
Question 5
1 / -0

Which of the following are valid pointers to the demerits of the two kingdom classification proposed by Linnaeus?

I. Euglena has features both of plants and animals.

II. Chlamydomanas is autotrophic but has flagella.

III. Slime molds resemble animals in one phase of their life cycle and plants in the other phase.

A
I and II only

B
I and III only

C
II and III only

D
I, II and III

Solution

Certain organisms like slime molds and Euglena have characters similar to plants and animals. Slime molds are tiny plants without cell walls whereas Euglena is minute animals with green pigment system. Their position in the living world was, hence, uncertain.
Question 6
1 / -0

Identify the incorrect statement regarding bacteria:

A
Bacteria are the most abundant micro-organisms.

B
Bacteria live in extreme habitats where very few other life forms can survive.

C
Bacteria as a group show the most extensive metabolic diversity.

D
They are obligate intracellular parasites.

Solution

Viruses are actually obligate intracellular parasites.
Question 7
1 / -0

Consider the following statements regarding characters of Archaebacteria that they share with eukaryotes:

I. The cell wall does not contain peptidoglycan.

II. DNA associated with histones.

III. Translation initiated with formylated methionine.

IV. RNA polymerase similar to eukaryotic RNA polymerase II

V. ATPase similarity

VI. Similar DNA replication and repair

How many of the above characters Archaebacteria share with eukaryotes?

A
3

B
4

C
5

D
6

Solution

I. The cell wall of archaebacteria and eukaryote does not contain peptidoglycan.

II. DNA associated with histones.

IV. RNA polymerase similar to eukaryotic RNA polymerase II

V. ATPase similarity

VI. Similar DNA replication and repair

Incorrect statemnt:

III. Translation initiated with formylated methionine.

In Archaebacteria and Eubacteria, formylation of methionine does not occur.
Question 8
1 / -0

Identify a character that is not unique to archaebacteria:

A
Cell wall structure

B
Cell membrane structure

C
Flagellin protein structure

D
Fatty acid synthetase present

Solution

Cell wall lacks peptidoglycan. Cell membrane has glycerol-ether lipids. In contrast to the bacterial flagellum, which is hollow and is assembled by subunits moving up the central pore to the tip of the flagella, archaeal flagella are synthesized by adding subunits at the base. As archaea have lipids with isoprenoid hydrophobic chains, the synthesis of their membrane lipids does not depend on fatty acid synthetase.
Question 9
1 / -0

Identify the incorrect statement regarding true bacteria?

A
As a group, they exhibit maximum metabolic diversity

B
Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.

C
Heterotrophic bacteria are the most abundant in nature.

D
Bacteria reproduce mainly by fission but sometimes under favourable conditions, they produce spores.

Solution

Spore formation is seen during UNFAVORABLE conditions.
Question 10
1 / -0

Consider the following statements regarding Mycoplasma:

I. They are a genus of bacteria that have a unique cell wall of their own.

II. In their genetic code UGA codes for tryptophan.

III. None of them is pathogenic to humans.

IV. They have a large genome.

V. They can be killed by penicillins.

VI. They can survive without oxygen

The number of correct statements is:

A
1

B
2

C
3

D
4

Solution

Only II and VI are correct. They lack a cell wall hence penicillin cannot affect them. Many are pathogenic to humans.

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Re-Attempt Weekly Quiz Competition

Biological Classification Test - 4

Result

Biological Classification Test - 4

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SHARING IS CARING

Question 1

Monera

Protista

Plantae

Fungi

Solution

Question 2

Metaphyta

Protista

Monera

Metazoa

Solution

Question 3

Starch

Lipid

Glycogen

Protein

Solution

Question 4

I and II only

I and III only

II and III only

I, II and III

Solution

Question 5

I and II only

I and III only

II and III only

I, II and III

Solution

Question 6

Bacteria are the most abundant micro-organisms.

Bacteria live in extreme habitats where very few other life forms can survive.

Bacteria as a group show the most extensive metabolic diversity.

They are obligate intracellular parasites.

Solution

Question 7

3

4

5

6

Solution

Question 8

Cell wall structure

Cell membrane structure

Flagellin protein structure

Fatty acid synthetase present

Solution

Question 9

As a group, they exhibit maximum metabolic diversity

Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.

Heterotrophic bacteria are the most abundant in nature.

Bacteria reproduce mainly by fission but sometimes under favourable conditions, they produce spores.

Solution

Question 10

1

2

3

4

Solution

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