Diversity in Living Organisms Test

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Diversity in Living Organisms Test - 68

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Weekly Quiz Competition

Question 1
1 / -0

Choose the correct answers from the alternatives given.
Coelomates that develop with the blastopore becoming the mouth are:

A
blastocoelomate

B
protostomes

C
deuterostomes

D
triploblastic

Solution

The majority of coelomate invertebrates develop as protostomes ("first mouth") in which the oral end of the animal develops from the first developmental opening, the blastopore.
So, the correct option is, 'protostomes'.
Question 2
1 / -0

Choose the correct answers from the alternatives given.
Flukes and tapeworms:

A
show cephalization

B
have well-developed reproductive systems

C
have well-developed nervous systems

D
are plant parasites

Solution

Their bodies have well-developed organ systems, especially reproductive organs. They are mostly hermaphroditic with the male organ consisting usually of two testes with accessory glands and ducts leading to a cirrus, or penis equivalent, that extends into the common genital atrium. The female gonad consists of a single ovary with a seminal receptacle and yolk glands, that connect with the oviduct as it expands into an ootype.
So, the correct option is 'have well-developed reproductive systems'.
Question 3
1 / -0

Choose the correct answers from the alternatives given.
Archaeopteryx is a connecting link between:

A
reptiles and mammals

B
reptiles and birds

C
chimpanzee and apes

D
chordates and non-chordates

Solution

Archaeopteryx looks like a bird. It has wings like birds. However, its teeth and tail are like those of reptiles. Archaeopteryx is, therefore, considered as a connecting link between reptiles and birds, thereby suggesting that birds have evolved from reptiles. So, the correct option 'reptiles and birds'
Question 4
1 / -0

Choose the correct answers from the alternatives given.
Ichthyology is the science of study of:

A
fishes

B
birds

C
reptiles

D
dinosaurs

Solution

Ichthyology (from Greek: ichthys, "fish"; and logos, "study"), also known as fish science, is the branch of zoology devoted to the study of fish. So, the correct answer is "Fishes".
Question 5
1 / -0

All of the following are characteristics of amphibians except that they:

A
Are usually tetrapods

B
Undergo metamorphosis

C
Have a 3-chambered heart

D
Have gills in adults

Solution

Amphibians are ectothermic, tetrapod vertebrates belonging to the class Amphibia. Frog is an organism of the class Amphibia. In frog development, the eggs hatch and give rise to tadpoles, small aquatic larvae that have external gills. Amphibians have a 3-chambered heart, which provides some separation of blood coming from the lungs and blood coming from the body. When a frog is out of the water, mucus glands in the skin keep the frog moist, which helps absorb dissolved oxygen from the air. A frog may also breathe much like a human, by taking in air through their nostrils and down into their lungs and not through gills.
So, the correct option is 'D'.
Question 6
1 / -0

The characteristics given below are associated with:
(i) Dry and scaly skin
(ii) They do not have external ears.
(iii) Cold-blooded
(iv) Lay eggs

A
Reptiles

B
Birds

C
Amphibians

D
Mammals

Solution

The skin of reptiles is scaly and dry. They are cold-blooded animals, i.e. not able to regulate the body temperature with respect to temperature changes in the environment. Reptiles lay eggs. They do not have external ears. Some of the examples of reptiles are crocodiles, tortoises, snakes, etc.
Hence, the correct option is 'A'.
Question 7
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In some chordates, the notochord is modified as the vertebral column. Such animals are called vertebrates. Which one of the following statement make sense?

A
All chordates are vertebrates but all vertebrates are not chordates.

B
All vertebrates are chordates and all chordates are vertebrates.

C
All vertebrates are chordates but all chordates are not vertebrates.

D
Chordates are not vertebrates and vertebrates are not chordates.

Solution

All chordates have a notochord. Chordates include Urochordata, Cephalochordata (both are called Protochordata), and Vertebrata. In vertebrates, notochord is replaced by the vertebral column (backbone). However vertebral column is not present in protochordates. Therefore, all vertebrates are chordates but all chordates are not vertebrates.
Thus, the correct answer is option C.
Question 8
1 / -0

Bryophytes include

A
liverworts and ferns

B
mosses and ferns

C
mosses and liverworts

D
all of these

Solution

Bryophytes are divided into liverworts, hornworts and mosses. So the correct option is C.
Question 9
1 / -0

Which of the following is not a character of phylum Hemichordata?

A
Presence of stomochord which is mesodermal in origin

B
Excretory organ is proboscis gland

C
Circulatory system is open

D
Respiration takes place through gills

Solution

Phylum Hemichordata consists of a small group of worm-like marine animals with an organ-system level of organisation. The body is cylindrical and is composed of an anterior proboscis, a collar, and a long trunk. The circulatory system is of open type. Respiration takes place through gills. The excretory organ is proboscis gland.
So the correct option is "Presence of stomochord which is mesodermal in origin".
Question 10
1 / -0

Choose the correct answers from the alternatives given .
Which of the following structures are analogous?

A
Legs of cockroach and the legs of a cat

B
Forelegs of a dog and the wings of a bat

C
Wings of a bat and slipper of a whale

D
Pectoral fin of a fish and the forelimb of a frog

Solution

Analogous organs are similar in functions but different in structure. Legs of cockroach and the legs of a cat, both help in walking but are very different structurally. Hence, it is an example of analogous organs.
So, the correct option is 'Legs of cockroach and the legs of a cat'.

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Re-Attempt Weekly Quiz Competition

Diversity in Living Organisms Test - 68

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Diversity in Living Organisms Test - 68

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SHARING IS CARING

Question 1

blastocoelomate

protostomes

deuterostomes

triploblastic

Solution

Question 2

show cephalization

have well-developed reproductive systems

have well-developed nervous systems

are plant parasites

Solution

Question 3

reptiles and mammals

reptiles and birds

chimpanzee and apes

chordates and non-chordates

Solution

Question 4

fishes

birds

reptiles

dinosaurs

Solution

Question 5

Are usually tetrapods

Undergo metamorphosis

Have a 3-chambered heart

Have gills in adults

Solution

Question 6

Reptiles

Birds

Amphibians

Mammals

Solution

Question 7

All chordates are vertebrates but all vertebrates are not chordates.

All vertebrates are chordates and all chordates are vertebrates.

All vertebrates are chordates but all chordates are not vertebrates.

Chordates are not vertebrates and vertebrates are not chordates.

Solution

Question 8

liverworts and ferns

mosses and ferns

mosses and liverworts

all of these

Solution

Question 9

Presence of stomochord which is mesodermal in origin

Excretory organ is proboscis gland

Circulatory system is open

Respiration takes place through gills

Solution

Question 10

Legs of cockroach and the legs of a cat

Forelegs of a dog and the wings of a bat

Wings of a bat and slipper of a whale

Pectoral fin of a fish and the forelimb of a frog

Solution

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