Diversity in Living Organisms Test

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Diversity in Living Organisms Test - 28

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Weekly Quiz Competition

Question 1
1 / -0

Latimeria swims by means of

A
Flapping movement of its pectoral and pelvic fins

B
Rotational movement of its pectoral fins

C
Flapping movement of pectoral fins and rotational movement of pelvic fins

D
Rotational movement of tail fin

Solution

B. Rotational movement of its pectoral fins
EXPLANATION: Latimeria is a rare genus of fish. This genus has two extant species- West Indian Ocean coelacanth and Indonesian coelacanth. The West Indian Ocean coelacanth is a critically endangered species. Latimeria swims by rotating the pectoral fins and the paired fins are highly mobile.
Question 2
1 / -0

Lung fishes have

A
Uncovered well developed gills

B
Covered well developed gills

C
Reduced but covered gills

D
Air bladder

Solution

In lung fishes, air bladder is modified for gaseous exchange. These fishes can respire through both gills and lungs. They are facultative air breathers as they normally breathe through gills but when the water is less, they respire through lungs.
So, the correct answer is 'Air bladder'.
Question 3
1 / -0

Which of the following is a cold blooded animal?

A
Pigeon

B
Kangaroo

C
Shark

D
Rabbit
Question 4
1 / -0

A fish capable of hibernating during drought is

A
Heteropneustes

B
Channa

C
Catla

D
Lates

Solution

A. Heteropneustes is a genus of catfishes native to Asia.
B. Channa, also known as snakehead fish, is a freshwater fish. It is capable of hibernating during drought by remaining dormant in the mud.
C. Catla (Labeo catla), known as Indian carp, is a popular edible fish.
D. Lates is a genus of perches, the fishes found in estuaries.
So, the correct answer is 'Channa'.
Question 5
1 / -0

Sea horse is an example of:

A
Mammalia

B
Reptilia

C
Aves

D
Pisces

Solution

Sea Horse (Hippocampus) is a fish. It belongs to Pisces that includes the true fishes.
Class Mammalia includes warm-blooded animals with characteristic mammary glands.
Class Reptilia includes cold-blooded animals that creep and crawl.
Class Aves includes birds that are warm-blooded, oviparous, and feather-covered vertebrates.
So, the correct answer is option D.
Question 6
1 / -0

In fishes, the exoskeleton is made of:

A
Cartilage

B
Bones

C
Hairs

D
Scales

Solution

A. Cartilage is a kind of structural component in the body.
B. Bones are the living tissue in the body.
C. Hairs are the protein filaments growing from follicles present in skin or dermis.
D. A scale is an appendage or a rigid plate present on an animal's skin for protection.
In fishes, the exoskeleton is made up of scales.
So, the correct answer is option D.
Question 7
1 / -0

Dorsal and ventral fins are continuous with caudal fin in

A
Lungfishes

B
Eel

C
Sea Horse

D
Both A and B
Solution
- Dorsal fins are single and located at the back of the body of fish.
- Ventral fins are also called pelvic fins and are paired. These are generally located behind the pectoral fins.
- Caudal fins are the tail fins and maybe homocercal or heterocercal.
In some fishes, dorsal and ventral fins are continuous with caudal fin. For example, lungfishes and eels.
Hence, both options A and B are correct. So, the correct answer is 'Both A and B'.
Question 8
1 / -0

Climbing perch is able to creep over land by means of

A
Pectoral fins

B
Opercular spines

C
Both A and B

D
Lobed fins

Solution

Climbing perch (Anabas) is a common freshwater fish that can also live out of water for sometime. It has long dorsal and anal fins which are supported by stiff rays. These fins bear spines. Their operculum (gill cover) also has backwardly directed spines. Due to these features, it is able to creep over land. Hence, both options A and B are correct.
So, the correct answer is 'Both A and B'.
Question 9
1 / -0

Match the columns
Column I Column II
a Pseudopodia p Mollusca
b Parapodia q Chondrichthyes
c Muscular Foot r Protozoa
d Fins s Annelids

A
a - p, b - r, c - s, d - q

B
a - r, b - s, c - p, d - q

C
a - r, b - p, c - s, d - q

D
a - s, b - r, c - q, d - p

Solution

A. Pseudopodia, also known as false feet, are the projections of the plasma membrane in some protozoans such as Amoeba. These help the organism to move and engulf food particles.
B. Parapodia are the locomotory organs in Annelids.
C. Muscular foot is present in Molluscs and used for anchorage and locomotion.
D. Fins are present in fishes and aid them in swimming. Paired fins are present in Chondrichthyes, a class of Cartilaginous fishes.
Hence, the correct match is a - r, b - s, c - p, d - q

So, the correct answer is 'a - r, b - s, c - p, d - q'.
Question 10
1 / -0

Stenohaline fishes are

A
Marine fishes only

B
Those which tolerate narrow range of salinity

C
Those which tolerate wide range of salinity

D
Fresh water fishes only

Solution

B. Those which tolerate narrow range of salinity
Reason: Stenohaline organisms are such species which can only tolerate specific limits of salinities. They can not handle a high amount of changes of salt content in water and the organism's tolerance for salt content depends on the type of species it is e.g. Goldfish (survive under low salinity) and Haddock (survive under high salinity).

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	Column I		Column II
a	Pseudopodia	p	Mollusca
b	Parapodia	q	Chondrichthyes
c	Muscular Foot	r	Protozoa
d	Fins	s	Annelids

Diversity in Living Organisms Test - 28

Result

Diversity in Living Organisms Test - 28

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SHARING IS CARING

Question 1

Flapping movement of its pectoral and pelvic fins

Rotational movement of its pectoral fins

Flapping movement of pectoral fins and rotational movement of pelvic fins

Rotational movement of tail fin

Solution

Question 2

Uncovered well developed gills

Covered well developed gills

Reduced but covered gills

Air bladder

Solution

Question 3

Pigeon

Kangaroo

Shark

Rabbit

Question 4

Heteropneustes

Channa

Catla

Lates

Solution

Question 5

Mammalia

Reptilia

Aves

Pisces

Solution

Question 6

Cartilage

Bones

Hairs

Scales

Solution

Question 7

Lungfishes

Eel

Sea Horse

Both A and B

Solution

Question 8

Pectoral fins

Opercular spines

Both A and B

Lobed fins

Solution

Question 9

a - p, b - r, c - s, d - q

a - r, b - s, c - p, d - q

a - r, b - p, c - s, d - q

a - s, b - r, c - q, d - p

Solution

Question 10

Marine fishes only

Those which tolerate narrow range of salinity

Those which tolerate wide range of salinity

Fresh water fishes only

Solution

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