Biology · Science General

Diversity in Living Organisms

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The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice

All of the following are the pairs of homologous organs, except

a. forelimbs of human and lizard b. forelimbs of a bird and a bat c. wings of a bird and insect

  1. a only

  2. b only

  3. c only

  4. a and b

  5. a, b and c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Homologous organs have the same same basic design, but different functions. In this case, the wings of a bird and insect have the same appearance and function, but different basic structure. This is a pair of analogous organs. Thus, correct answer.

Multiple choice

Which of the following has two germ layers?

  1. Platyhelminthes

  2. Coelenterata

  3. Nematoda

  4. Annelida

  5. Arthropoda
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is the correct answer. They have two layers, the outer layer is the epidermis and inner is gastrodermis.

Multiple choice

Depending upon the coelom, the animals are divided into

  1. acoelomate and pseudocoelomate

  2. pseudocoelomate and eucoelomate

  3. acoelomate, pseudocoelomate and eucoelomate

  4. eucoelomate and acoelomate

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct. On the basis of this, animals are divided into 3 categories. Coelom is the body cavity.

Multiple choice

Protochordates have

  1. brain

  2. cranium

  3. vertebral column

  4. jaws

  5. notochord
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yes, protochordates which are non-vertebrates possess notochord at some early stages.

Multiple choice

What is a vampire bat?

Directions: Read the passage and answer the following question:

South America is the home to some of the strangest, some of the loveliest and some of the most horrifying animals in the world. There can be few creatures more improbable than the sloth which spends its life in a permanent state of mute slow motion, hanging upside down in the tall forest trees: few more bizarre than the giant ant eater of the Savannahs with its absurdly disproportionate anatomy, its tail enlarged into a shaggy banner and its jaws elongated into a curved and toothless tube. On the other hand, beautiful birds are so common as to become almost unremarkable. Gaudy macaws flap through the forest, their splendid plumage contrasting incongruously with their harsh cries; and humming-birds, like tiny jewels, flit from flower to flower sipping nectar, their iridescent feathers flashing the colours of the rainbow as they fly.
Many of the South American animals inspire the fascination which comes from revulsion. Shoals of cannibal fish infest the rivers waiting to rip the flesh from any animal which tumbles among them, and vampire bats, a legend in Europe but a grim reality in South America, fly out at night from their roosts in the forests to suck blood from cows and men.

  1. A grim reality

  2. A creature, which thrives on animal and human blood

  3. A legend in Europe but a reality in South America

  4. A type of bird
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice

A shoal of fish can be substituted by

Directions: Read the passage and answer the following question:

South America is the home to some of the strangest, some of the loveliest and some of the most horrifying animals in the world. There can be few creatures more improbable than the sloth which spends its life in a permanent state of mute slow motion, hanging upside down in the tall forest trees: few more bizarre than the giant ant eater of the Savannahs with its absurdly disproportionate anatomy, its tail enlarged into a shaggy banner and its jaws elongated into a curved and toothless tube. On the other hand, beautiful birds are so common as to become almost unremarkable. Gaudy macaws flap through the forest, their splendid plumage contrasting incongruously with their harsh cries; and humming-birds, like tiny jewels, flit from flower to flower sipping nectar, their iridescent feathers flashing the colours of the rainbow as they fly.
Many of the South American animals inspire the fascination which comes from revulsion. Shoals of cannibal fish infest the rivers waiting to rip the flesh from any animal which tumbles among them, and vampire bats, a legend in Europe but a grim reality in South America, fly out at night from their roosts in the forests to suck blood from cows and men.

  1. a school of fish

  2. a pride of fish

  3. a flock of fish

  4. a herd of fish
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A collection or group of fish is commonly referred to as 'School of Fish'. 'Shoal' also means a large mass or group.

Multiple choice

Vampire bats are described as a legend in Europe because

Directions: Read the passage and answer the following question:

South America is the home to some of the strangest, some of the loveliest and some of the most horrifying animals in the world. There can be few creatures more improbable than the sloth which spends its life in a permanent state of mute slow motion, hanging upside down in the tall forest trees: few more bizarre than the giant ant eater of the Savannahs with its absurdly disproportionate anatomy, its tail enlarged into a shaggy banner and its jaws elongated into a curved and toothless tube. On the other hand, beautiful birds are so common as to become almost unremarkable. Gaudy macaws flap through the forest, their splendid plumage contrasting incongruously with their harsh cries; and humming-birds, like tiny jewels, flit from flower to flower sipping nectar, their iridescent feathers flashing the colours of the rainbow as they fly.
Many of the South American animals inspire the fascination which comes from revulsion. Shoals of cannibal fish infest the rivers waiting to rip the flesh from any animal which tumbles among them, and vampire bats, a legend in Europe but a grim reality in South America, fly out at night from their roosts in the forests to suck blood from cows and men.

  1. they do not exist

  2. they do not fly out at night to suck human blood

  3. there is a popularly accepted belief in their existence, which has not yet been proved

  4. they are a rare species
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the line “a legend in Europe”, the keyword used is 'Legend', which literally means a story handed down by generations among people, popularly believed to have a historical basis, although not verifiable. Hence, option (3) is the correct answer as it clearly represents the context in which it has been used in the passage.

Multiple choice

The Savannahs are found generally in

Directions: Read the passage and answer the following question:

South America is the home to some of the strangest, some of the loveliest and some of the most horrifying animals in the world. There can be few creatures more improbable than the sloth which spends its life in a permanent state of mute slow motion, hanging upside down in the tall forest trees: few more bizarre than the giant ant eater of the Savannahs with its absurdly disproportionate anatomy, its tail enlarged into a shaggy banner and its jaws elongated into a curved and toothless tube. On the other hand, beautiful birds are so common as to become almost unremarkable. Gaudy macaws flap through the forest, their splendid plumage contrasting incongruously with their harsh cries; and humming-birds, like tiny jewels, flit from flower to flower sipping nectar, their iridescent feathers flashing the colours of the rainbow as they fly.
Many of the South American animals inspire the fascination which comes from revulsion. Shoals of cannibal fish infest the rivers waiting to rip the flesh from any animal which tumbles among them, and vampire bats, a legend in Europe but a grim reality in South America, fly out at night from their roosts in the forests to suck blood from cows and men.

  1. tropical regions

  2. tundra regions

  3. mediterranean regions

  4. deserts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A 'Savannah' is a treeless plain or grassland characterised by scattered tree, found especially in tropical regions with seasonal rainfall. Therefore, option (1) is correct.