Diversity in Living World Test

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Diversity in Living World Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Marine animals are classified according to the depth at which they live. Which of the following animals is found floating at the sea surface?

A
Zooplankton

B
Echinoderm

C
Jellyfish

D
Coral

Solution

This is the correct option. Zooplankton is found floating at the sea surface. This type of an animal is called planktonic animal.
Question 2
1 / -0

Consider the following statements and choose the correct option:

a. In Protozoa, all the vital activities of the body are performed by a single cell.
b. In Parazoa, the cells are organised into structural and functional units called tissues, organs and organ systems.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'a' is true and statement 'b' is false.

D
Statement 'b' is true and statement 'a' is false.

Solution

This is the correct option as only statement 'b' is false. In Parazoa, the cells are loosely aggregated and do not form tissues or organs.
Question 3
1 / -0

Animals, not having coelom, are called acoelomate animals. Which of the following are acoelomate animals?

A
Flatworms

B
Echinoderms

C
Roundworms

D
Chordates

Solution

This is the correct option. Flatworms are acoelomate animals. They do not have coelom. The space between body wall and digestive tract is filled with a special type of connective tissue due to which there is no body cavity.
Question 4
1 / -0

In which of the following organisms of Phylum Protozoa, locomotory organs are absent?

A
Sporozoan

B
Rhizopoda

C
Flagellata

D
Ciliata

Solution

This is the correct option. In Sporozoans, locomotory organs are absent.
Question 5
1 / -0

Which of the following organisms of Phylum Platyhelminthes is free-living, soft-bodied, leaf-like flatworm having a simple gut with mouth, pharynx and intestine?

A
Planarian

B
Fasciola

C
Taenia

D
Schistisoma

Solution

This is the correct option. Planarian is free-living, soft-bodied, leaf-like flatworm having a simple gut with mouth, pharynx and intestine.
Question 6
1 / -0

Which of the following organisms of Phylum Mollusca has bilaterally symmetrical body that is convex dorsally and flattened ventrally?

A
Neopilina

B
Chiton

C
Neomenia

D
Pila

Solution

This is the correct option. Chiton has bilaterally symmetrical body that is convex dorsally and flattened ventrally.
Question 7
1 / -0

Consider the following statements and choose the correct option:

a. Molluscs are essentially aquatic, mostly marine, few fresh-water and some terrestrial forms.
b. Body of molluscs is covered with a thick chitinous cuticle forming an exoskeleton.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'a' is true and statement 'b' is false.

D
Statement 'b' is true and statement 'a' is false.

Solution

This is the correct option as statement 'b' is false. Body of arthropods is covered with a thick chitinous cuticle forming an exoskeleton.
Question 8
1 / -0

Phylum Porifera is divided into three classes. Which of the following organisms is marine, vase-shaped, simple sponge with spicules of calcium carbonate?

A
Euplectella

B
Oscarella

C
Grantia

D
Pheronema

Solution

This is the correct option. Grantia is marine, vase-shaped, simple sponge with spicules of calcium carbonate.
Question 9
1 / -0

Phylum Chordata includes animals bearing notochord. Which of the following is a characteristic of chordates?

A
They are asymmetrical, radially symmetrical, or bilaterally symmetrical.

B
Gill-clefts are never found.

C
Post-anal tail is usually not found.

D
Alimentary canal is always placed ventral to nerve cord.

Solution

This is the correct option. In chordates, alimentary canal is always placed ventral to nerve cord.
Question 10
1 / -0

Which of the following classes includes all marine and predaceous fishes with cartilaginous endoskeleton?

A
Chondrichthyes

B
Cyclostomata

C
Osteichthyes

D
Amphibia

Solution

This is the correct option. Chondrichthyes is a class that includes all marine and predaceous fishes with cartilaginous endoskeleton.

Question 11

1 / -0

Match the following:

a. Ichthyophis	1. Tailless amphibians
b. Triton	2. Tailed amphibians
c. Rhacophorus	3. Limbless amphibians

a - 1, b - 3, c - 2

a - 2, b - 3, c - 1

a - 3, b - 1, c - 2

a - 3, b - 2, c - 1

Solution

This is the correct option. Ichthyophis are the limbless amphibians. Triton are the tailed amphibians. Rhacophorus are the tailless amphibians.

Question 12
1 / -0

Which of the following possesses electric organs as modified musculature between eyes and nostrils?

A
Torpedo

B
Trygon

C
Scyllium

D
Sphyrna

Solution

This is the correct option. Torpedo possesses electric organs as modified musculature between eyes and nostrils.
Question 13
1 / -0

Class Amphibia includes nearly 3000 living species. Which of the following is not a characteristic of organisms of this class?

A
They are carnivorous and cold blooded animals.

B
They are found in every type of water. They live in salty, brackish or fresh-water.

C
Head and trunk are distinct.

D
Neck and tail may or may not be present.

Solution

This is the correct option as this is not a characteristic of organisms of class Amphibia. They have aquatic, semiaquatic and terrestrial mode of life, and are never marine.
Question 14
1 / -0

Class Reptilia includes nearly 7000 living species. Which of the following organisms does not belong to the class?

A
Bufo

B
Testudo

C
Bungarus

D
Draco

Solution

This is the correct option. Bufo does not belong to class Reptilia. It belongs to class Amphibia.
Question 15
1 / -0

Which of the following organisms of class Mammalia is an egg-laying mammal?

A
Echidna

B
Didelphis

C
Notoryctes

D
Macropus

Solution

This is the correct option. Echidna of class Mammalia is an egg-laying mammal. Its females are oviparous.

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Re-Attempt Weekly Quiz Competition

Diversity in Living World Test - 4

Result

Diversity in Living World Test - 4

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SHARING IS CARING

Question 1

Zooplankton

Echinoderm

Jellyfish

Coral

Solution

Question 2

Both the statements are true.

Both the statements are false.

Statement 'a' is true and statement 'b' is false.

Statement 'b' is true and statement 'a' is false.

Solution

Question 3

Flatworms

Echinoderms

Roundworms

Chordates

Solution

Question 4

Sporozoan

Rhizopoda

Flagellata

Ciliata

Solution

Question 5

Planarian

Fasciola

Taenia

Schistisoma

Solution

Question 6

Neopilina

Chiton

Neomenia

Pila

Solution

Question 7

Both the statements are true.

Both the statements are false.

Statement 'a' is true and statement 'b' is false.

Statement 'b' is true and statement 'a' is false.

Solution

Question 8

Euplectella

Oscarella

Grantia

Pheronema

Solution

Question 9

They are asymmetrical, radially symmetrical, or bilaterally symmetrical.

Gill-clefts are never found.

Post-anal tail is usually not found.

Alimentary canal is always placed ventral to nerve cord.

Solution

Question 10

Chondrichthyes

Cyclostomata

Osteichthyes

Amphibia

Solution

Question 11

a - 1, b - 3, c - 2

a - 2, b - 3, c - 1

a - 3, b - 1, c - 2

a - 3, b - 2, c - 1

Solution

Question 12

Torpedo

Trygon

Scyllium

Sphyrna

Solution