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

A shoal of fish can be substituted by ________.

Directions: Answer the given question based on the following passage:

Central and South America have some of the world’s most unique species of wildlife. Perhaps, some are more familiar than others. Central and South America has many different groups of species, which include: mammals, birds, reptiles, amphibians, fish, and insects. These groups of animals need to live in specific types of climates and habitats in order to ensure their survivorship.

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, 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 colors of the rainbow as they fly.

The Amazonian rain forest, in Brazil alone, is the largest rain forest in the world. Many species of mammals, reptiles, amphibians, insects, and birds occupy the canopy of this magnificent rain forest. The iguana lives in the trees high above from the ground. It has flattened sides and a long, strong tail, which gives it balance and stability when it leaps. It also has clawed feet, which allows the iguana to grip branches.

The poison dart frog is a tree frog that secretes poison when it gets attacked. Even a small amount of the toxin can be lethal to humans. Today, South American Indians use the poison to tip their arrowheads before hunting.

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 score of fish

  4. a herd of fish

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct answer is (1). A collection or group of fish is commonly referred to as 'School of Fish'. 'Shoal' also means a large mass or group of fish.

Multiple choice

The second paragraph of the passage opens with a striking sentence. What method does the author employ to achieve its effect?

Directions: Answer the given question based on the following passage:

Central and South America have some of the world’s most unique species of wildlife. Perhaps, some are more familiar than others. Central and South America has many different groups of species, which include: mammals, birds, reptiles, amphibians, fish, and insects. These groups of animals need to live in specific types of climates and habitats in order to ensure their survivorship.

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, 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 colors of the rainbow as they fly.

The Amazonian rain forest, in Brazil alone, is the largest rain forest in the world. Many species of mammals, reptiles, amphibians, insects, and birds occupy the canopy of this magnificent rain forest. The iguana lives in the trees high above from the ground. It has flattened sides and a long, strong tail, which gives it balance and stability when it leaps. It also has clawed feet, which allows the iguana to grip branches.

The poison dart frog is a tree frog that secretes poison when it gets attacked. Even a small amount of the toxin can be lethal to humans. Today, South American Indians use the poison to tip their arrowheads before hunting.

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. Repetition of words and phrases.

  2. The use of a number of striking adjectives.

  3. Repetition of words and phrases and the repetition of superlatives.

  4. The use of a long sentence.

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

Correct answer is (3).

The option (4) is incorrect because it does not make any sentence striking. There are additional features which make the first sentence striking like the usage of adjectives 'strangest', 'loveliest', horrifying' , repetition of words 'some of'. Hence, option (3) is the best of the options available.

Multiple choice
  1. They get their nutrition from soil, hence known as soil organisms.

  2. They live in soil and respire in soil, hence known as soil organisms.

  3. Their colour resembles the soil, hence known as soil organisms.

  4. Both 1 and 2.

  5. Both 1 and 3.

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

Yes, it is the correct answer.

Multiple choice
  1. They are unique amongst nematodes, being capable of both parasitic and free-living reproductive cycles.

  2. Transmission of the worm involves a geo-helminth phase.

  3. Thread-worm infections occur in a range of mammalian species throughout the world.

  4. Parasitic worms are all parthenogenetic males.

  5. Free-living male and female worms have a rhabditiform pharynx and are smaller in size.

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

Parasitic worms are all parthenogenetic females, measuring from 2-3mm in length and characterised by the presence of an extremely long filariform pharynx (one third of body length) and a blunt pointed tail.

Multiple choice
  1. M. tuberculosis is a genetically diverse bacterium.

  2. Humans are the only known reservoirs of M. tuberculosis.

  3. It does not retain any bacteriological stain.

  4. The rate of division of M. tuberculosis is extremely fast.

  5. Its cell wall is rich in lipids.

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

M. tuberculosis divides every 15–20 hours, which is extremely slow compared to other bacteria, which tend to have division times measured in minutes (Escherichia coli can divide roughly every 20 minutes).

Multiple choice
  1. Weight

  2. Feathers

  3. Keen eyesight

  4. Farm produce

  5. dummy

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

They have remarkably sharp hearing power and a keen eyesigh. Hence, the answer.

Multiple choice
  1. Cobra

  2. Rodents

  3. Birds

  4. Earthworms

  5. dummy

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

They feed on rodents such as mice and rats. Hence, this is the answer to this question.

Multiple choice
  1. eyesight

  2. length

  3. weight

  4. the sound it produces

  5. dummy

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

'...it does not hoot which is a sound made by typical owls'. This is the answer.

Multiple choice
  1. Soft and silky feathers

  2. Keen eyesight

  3. Straight beak

  4. Sharp hearing power

  5. dummy

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

This is feature of the barn owl is not stated in the passage.

Multiple choice
  1. acoelomate

  2. haemocoelomate

  3. pseudocoelomate

  4. eucoelomate

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

Based on the nature of coelom, round worms are pseudocoelomate with false coelom without mesodermal lining.

Multiple choice
  1. Cool

  2. Bold

  3. Surprised

  4. Afraid

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

Both scared and afraid mean feeling fear.

Multiple choice
  1. Presence of cell wall

  2. Mode of nutrition

  3. Absence of nucleus

  4. Absence of plastid

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

The fundamental difference between plants and fungi is their mode of nutrition. Plants are autotrophic, producing their own food through photosynthesis using chlorophyll. Fungi are heterotrophic, obtaining nutrients from external organic matter. Both have cell walls and nuclei, so these are not distinguishing features.