Diversity in Living Organisms Test

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Diversity in Living Organisms Test - 38

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Weekly Quiz Competition

Question 1
1 / -0

Urinary bladder is absent in________.

A
Pisces

B
Snakes

C
Crocodiles

D
All of the above

Solution

The urinary bladder is absent in Pisces, amphibians, and some reptilians. They excrete the waste nitrogenous material in the form of uric acid.
Thus, the correct answer is option D.
Question 2
1 / -0

Assertion: Snakes exposed to gamma rays become non-poisonous.

Reason: Poisonous snakes have poison glands and a pair of fangs. They are affected by gamma rays.

A
Both are true with reason being correct explanation of assertion.

B
Both are true but reason is not correct explanation of assertion.

C
Assertion is true but reason is wrong.

D
Both reason and assertion are wrong.

Solution

Snakes exposed to gamma rays become non-poisonous as gamma rays bring conformational changes in the poison leading to loss of its toxicity.
Gamma rays are high energy radiations that can pass through all the living cells leading to their death.
So, on exposure to gamma rays poison glands would be affected but the snakes would become non-poisonous due to loss of toxicity of their venoms.

So, the correct answer is 'B'.
Question 3
1 / -0

Heart is four chambered in reptile__________.

A
Crocodile

B
Frog

C
Snake

D
Lizard

Solution

All reptiles have 3 chambered heart except Crocodile. Crocodile have 4 chambered heart that have 2 auricles and 2 completely divided ventricles.
So, Option A is correct here.
Question 4
1 / -0

Which one is a living fossil?

A
Sphenodon

B
Heloderma

C
Oryctolagus

D
Rana

Solution

A. Correct option- A
B. Explanation for the correct option.
Sphenodon is a New Zealand lizard. The anatomical characteristics of this organism differ widely from all other existing lizards. It is the only living representative of the order Rhynchocephalia, of which many Mesozoic fossil species are known.
Question 5
1 / -0

Choose the correct one.

A
Optic nerve is the shortest

B
In amniotes the last cranial nerve is spinal accessory

C
In non-amniotes the last cranial nerve is vagus

D
Olfactory nerves have mixed fibres

Solution

10 pairs of cranial nerves are present in amniotes fish and amphibian and 12 pairs occur in amniotes reptiles and mammals. In non-amniotes, the cranial nerves are Olfactory Optic, Occulomotor, Trochlear, Trigeminal, Abducen, Facial, Auditory Glossopharyngeal and Vagus.
So, option C is the correct option.
Question 6
1 / -0

A limbless lizard is____________.

A
Amblyrhynchus

B
Ophisaurus

C
Draco

D
Moloch

Solution

A limbless lizard is ophisaurus. It is a genus of reptiles that resemble snakes, but are actually lizards.
Question 7
1 / -0

Calotes versicolor is_____________.

A
Flying Lizard

B
Wall Lizard

C
Garden Lizard

D
Rock Lizard

Solution

The Garden Lizard (calotes versicolor) is an agamid lizard found widely distributed in Indo-malaya.
Question 8
1 / -0

Assertion: Salamander and sphenodon are classified as reptiles.

Reason: Their skin is naked, moist and glandular.

A
Both are true with reason being correct explanation for assertion

B
Both are true but reason is not correct explanation for assertion

C
Assertion is true but reason is wrong

D
Both are wrong

Solution

Both are wrong.

At first glance, salamanders appear to be a type of lizard. However, this is not true. Salamanders are amphibians, while lizards are reptiles. The main difference between reptiles and amphibians is that reptiles are covered in dry scales and scutes, while amphibians have moist skin.
Question 9
1 / -0

A post-anal tail is found in____________.

A
Scorpion

B
Earthworm

C
Snake

D
Lepisma

Solution

Snake belongs to phylum Chordata. It belongs to class Reptilia in phylum Chordata. Animals belonging to phylum Chordata have a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. They possess a post-anal tail and closed circulatory system. Whereas Earthworms, Scorpions and Lepisma do not belong to vertebrates and thus, do not possess post anal and tail.
Hence, The option 'C' is correct,
Question 10
1 / -0

Which organ is vestigial in Python?

A
Scales

B
Hind limbs

C
Teeth

D
Nose
Solution
- Vestigial organs is the organs that occur in reduced form and are useless to the possessor but are homologous to the fully developed, functional organs of related animals.
- The snakes have evolved from the lizard-like reptiles bearing two pairs of functional limbs, but due to change in their mode of life, have lost the limbs and girdles completely.
- The pythons and boas still retain pelvic girdles and the hind limbs in a reduced condition.
- So, the correct answer is option B.

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Re-Attempt Weekly Quiz Competition

Diversity in Living Organisms Test - 38

Result

Diversity in Living Organisms Test - 38

Score

-

Rank

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SHARING IS CARING

Question 1

Pisces

Snakes

Crocodiles

All of the above

Solution

Question 2

Both are true with reason being correct explanation of assertion.

Both are true but reason is not correct explanation of assertion.

Assertion is true but reason is wrong.

Both reason and assertion are wrong.

Solution

Question 3

Crocodile

Frog

Snake

Lizard

Solution

Question 4

Sphenodon

Heloderma

Oryctolagus

Rana

Solution

Question 5

Optic nerve is the shortest

In amniotes the last cranial nerve is spinal accessory

In non-amniotes the last cranial nerve is vagus

Olfactory nerves have mixed fibres

Solution

Question 6

Amblyrhynchus

Ophisaurus

Draco

Moloch

Solution

Question 7

Flying Lizard

Wall Lizard

Garden Lizard

Rock Lizard

Solution

Question 8

Both are true with reason being correct explanation for assertion

Both are true but reason is not correct explanation for assertion

Assertion is true but reason is wrong

Both are wrong

Solution

Question 9

Scorpion

Earthworm

Snake

Lepisma

Solution

Question 10

Scales

Hind limbs

Teeth

Nose

Solution

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