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

Which of the following phyla have true body cavity?

  1. Porifera

  2. Coelenterata

  3. Nematoda

  4. Annelida
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Annelida are the first phylum to exhibit a true coelom (a fluid-filled cavity completely lined by mesoderm). Porifera, Coelenterata, and Nematoda are acoelomate or pseudocoelomate.

Multiple choice

Which of the following is not a characteristic feature of Aves?

  1. Presence of hair on skin

  2. Presence of exoskeleton of scales

  3. Presence of lungs

  4. Warm blooded animals
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aves (birds) have feathers, not scales, as their primary body covering. While they may have scales on their legs, the presence of scales is not a defining characteristic of the class Aves in the same way it is for Reptilia.

Multiple choice

Spiny skin is a characteristic feature of

  1. echinoderms

  2. molluscs

  3. nematodes

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

Echinoderms, such as starfish and sea urchins, are characterized by their spiny skin and water vascular system.

Multiple choice

Name the phyla of segmented worms

  1. Annelida

  2. Arthropoda

  3. Platyhelminthes

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

Annelida is the phylum characterized by segmented worms, where the body is divided into repeating segments or metameres.

Multiple choice

What does the passage mean by ‘tossing’?

Directions: Read the passage and answer the question that follows.

Pigeons have an instinctive ability to navigate by the sun, the earth’s magnetic field and by infrasound or hearing distant low-frequency sound waves. However, due to adverse weather or man-created conditions, e.g. cell tower signals emitting radiation which results in disorientation and windmills which affect all birds and bats too, they increasingly find it difficult to pick up proper directions to reach “home”, but no matter what, most do eventually return safe. Homers are a breed of pigeons named so because many have flown back to their “homes” from long distances. They are made to race between 8 months to 5 years of age. Training is called “tossing” which involves, as just mentioned, taking the birds to a place and releasing them. The time they take to return home needs to be noted.

  1. It means throwing the pigeons in the wind.

  2. It is a training method of the pigeons.

  3. It means returning the pigeons to their homes.

  4. It is a form of racing.

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

This is the correct answer as the passage mentions that ‘tossing’ is training the pigeons.

Multiple choice

What according to the passage can cause disorientation for birds and bats?

Directions: Read the passage and answer the question that follows.

Pigeons have an instinctive ability to navigate by the sun, the earth’s magnetic field and by infrasound or hearing distant low-frequency sound waves. However, due to adverse weather or man-created conditions, e.g. cell tower signals emitting radiation which results in disorientation and windmills which affect all birds and bats too, they increasingly find it difficult to pick up proper directions to reach “home”, but no matter what, most do eventually return safe. Homers are a breed of pigeons named so because many have flown back to their “homes” from long distances. They are made to race between 8 months to 5 years of age. Training is called “tossing” which involves, as just mentioned, taking the birds to a place and releasing them. The time they take to return home needs to be noted.

  1. The infra sound waves

  2. The earth’s magnetic field

  3. Weather conditions

  4. Long distances

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

This is correct as this is one of the reasons that disorient birds and bats.

Multiple choice

What are ‘homers’ according to the passage?

Directions: Read the passage and answer the question that follows.

Pigeons have an instinctive ability to navigate by the sun, the earth’s magnetic field and by infrasound or hearing distant low-frequency sound waves. However, due to adverse weather or man-created conditions, e.g. cell tower signals emitting radiation which results in disorientation and windmills which affect all birds and bats too, they increasingly find it difficult to pick up proper directions to reach “home”, but no matter what, most do eventually return safe. Homers are a breed of pigeons named so because many have flown back to their “homes” from long distances. They are made to race between 8 months to 5 years of age. Training is called “tossing” which involves, as just mentioned, taking the birds to a place and releasing them. The time they take to return home needs to be noted.

  1. All birds that go home

  2. Pigeons that race

  3. A particular breed

  4. All birds and bats that travel long distances

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

This is correct as the passage mentions that ‘homers’ are a particular breed of pigeons.

Multiple choice

What is the main purpose of keeping homing pigeons according to the passage?

Directions: Read the passage and answer the question that follows.

Pigeons have an instinctive ability to navigate by the sun, the earth’s magnetic field and by infrasound or hearing distant low-frequency sound waves. However, due to adverse weather or man-created conditions, e.g. cell tower signals emitting radiation which results in disorientation and windmills which affect all birds and bats too, they increasingly find it difficult to pick up proper directions to reach “home”, but no matter what, most do eventually return safe. Homers are a breed of pigeons named so because many have flown back to their “homes” from long distances. They are made to race between 8 months to 5 years of age. Training is called “tossing” which involves, as just mentioned, taking the birds to a place and releasing them. The time they take to return home needs to be noted.

  1. They are made to navigate

  2. They are trained to race

  3. They are used for detecting cell towers that emit radiation

  4. Cannot be determined from the passage

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

This is the correct answer as the passage explains how pigeons are trained and raced from the age of 6 months to 5 years.

Multiple choice

What is the passage about?

Directions: Read the passage and answer the question that follows.

Pigeons have an instinctive ability to navigate by the sun, the earth’s magnetic field and by infrasound or hearing distant low-frequency sound waves. However, due to adverse weather or man-created conditions, e.g. cell tower signals emitting radiation which results in disorientation and windmills which affect all birds and bats too, they increasingly find it difficult to pick up proper directions to reach “home”, but no matter what, most do eventually return safe. Homers are a breed of pigeons named so because many have flown back to their “homes” from long distances. They are made to race between 8 months to 5 years of age. Training is called “tossing” which involves, as just mentioned, taking the birds to a place and releasing them. The time they take to return home needs to be noted.

  1. The passage is about the ways in which homing pigeons navigate.

  2. The passage is about the process of training homing pigeons.

  3. This passage is about the different conditions that can hinder the navigation abilities of homing pigeons.

  4. All of the above

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

This is the correct answer as the passage covers all the topics given in the above options.

Multiple choice

Fish are called ______.

Directions: Read the passage and answer the question that follows.

                                                Being a Fish
                                         By Russell E. Erickson 
Would it be fun to be a fish? They are, after all, quite different from us.
Fish have no ears as we do. Their bodies are covered with thin, flat plates called scales. The only sounds they know are what they feel using certain scales along their sides. These are special scales called lateral lines. 
We get oxygen from the air by using our lungs. Fish get oxygen from the water by using the gills on the sides of their heads. We can play in water and on land, but fish must stay in the water all the time. Fish never get hot or cold. They are called cold-blooded because they are always the same temperature as the water around them. That means they have no need for hot soup, or cold lemonade, or cozy blankets, or cool sandals.
All in all, it’s probably more fun being us.

  1. hot blooded

  2. cold blooded

  3. warm bodies

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

They are called cold blooded because they are always the same temperature as the surrounding water.

Multiple choice

From where do fish get oxygen?

Directions: Read the passage and answer the question that follows.

                                                Being a Fish
                                         By Russell E. Erickson 
Would it be fun to be a fish? They are, after all, quite different from us.
Fish have no ears as we do. Their bodies are covered with thin, flat plates called scales. The only sounds they know are what they feel using certain scales along their sides. These are special scales called lateral lines. 
We get oxygen from the air by using our lungs. Fish get oxygen from the water by using the gills on the sides of their heads. We can play in water and on land, but fish must stay in the water all the time. Fish never get hot or cold. They are called cold-blooded because they are always the same temperature as the water around them. That means they have no need for hot soup, or cold lemonade, or cozy blankets, or cool sandals.
All in all, it’s probably more fun being us.

  1. Air

  2. Water

  3. Humans

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fish get oxygen from water by using the gills on the sides of their head.

Multiple choice

From the above passage, according to the author, whose life is referred to as fun?

Directions: Read the passage and answer the question that follows.

                                                Being a Fish
                                         By Russell E. Erickson 
Would it be fun to be a fish? They are, after all, quite different from us.
Fish have no ears as we do. Their bodies are covered with thin, flat plates called scales. The only sounds they know are what they feel using certain scales along their sides. These are special scales called lateral lines. 
We get oxygen from the air by using our lungs. Fish get oxygen from the water by using the gills on the sides of their heads. We can play in water and on land, but fish must stay in the water all the time. Fish never get hot or cold. They are called cold-blooded because they are always the same temperature as the water around them. That means they have no need for hot soup, or cold lemonade, or cozy blankets, or cool sandals.
All in all, it’s probably more fun being us.

  1. Fish

  2. Animals

  3. Humans

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

As fish are compared to humans who can play anywhere and enjoy, option 3 is the correct answer.

Multiple choice

In the passage, the author compares fish with ______.

Directions: Read the passage and answer the question that follows.

                                                Being a Fish
                                         By Russell E. Erickson 
Would it be fun to be a fish? They are, after all, quite different from us.
Fish have no ears as we do. Their bodies are covered with thin, flat plates called scales. The only sounds they know are what they feel using certain scales along their sides. These are special scales called lateral lines. 
We get oxygen from the air by using our lungs. Fish get oxygen from the water by using the gills on the sides of their heads. We can play in water and on land, but fish must stay in the water all the time. Fish never get hot or cold. They are called cold-blooded because they are always the same temperature as the water around them. That means they have no need for hot soup, or cold lemonade, or cozy blankets, or cool sandals.
All in all, it’s probably more fun being us.

  1. humans

  2. dogs

  3. cats

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As author compares fish with humans, option 1 is the correct answer.

Multiple choice

Which of the following statements related to a bacterial flagellum is incorrect?

  1. Bacterial flagellum rotates clockwise or counter clockwise from the basal body.

  2. The rotation of basal body causes the movement of flagellum in a bacterium.

  3. The basal body of flagellum in gram positive bacterium has two pairs of rings.

  4. A typical bacterial flagellum consists of three parts: filament, basal body and hook.

  5. Prokaryotic flagellum do not undulate in a wave like motion.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

As gram positive bacterium lacks the outer lipopolysaccharide layer, the basal body of the flagellum in it has only the inner pair of rings and the outer pair of rings are absent in gram positive bacteria. Hence, this statement is not correct.