Biology · Science General

Diversity in Living Organisms

3,323 Questions

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 zoology structural organization of animals structural organization of leech phylum annelida annelida structural organization of rabbit

Which of the following is an example of leech?

  1. Hirudinaria

  2. Glossiphonia

  3. Haemadipsa

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hirudinaria is an Indian cattle leech. This is the fresh water species. It is cosmopolitan. It feeds on the blood of frog, animals and men. 

Glossiphonia complanata is a leech which often occurs abundantly in eastern United States and Canada. It feeds mainly on the fluid of mollusks and invertebrates. 
Haemadipsa are commonly known as jawed land leeches. These annelids are known from subtropical and tropical regions around the Indian and Pacific Ocean. These are all the different genus of leeches.
Thus, the correct answer is option D. 

Multiple choice zoology structural organization of animals structural organization of leech phylum annelida annelida structural organization of rabbit

Which one exhibits concentric tube-within- tube plan?

  1. Arthropoda

  2. Oligochaeta/Earthworm

  3. Mollusca

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

The tube-within-a-tube body plan refers to an organism having a digestive tract with two openings (mouth and anus), which is characteristic of annelids like earthworms.

Multiple choice zoology structural organization of animals structural organization of leech phylum annelida annelida structural organization of rabbit

The common larva of polychaeta/annelida is

  1. Trochophore

  2. Actinotrocha

  3. Glochidium

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

Trochophore, also called trochosphere, small, translucent, free-swimming larva characteristic of marine annelids and most groups of mollusks. Trochophores are spherical or pear-shaped and are girdled by a ring of cilia (minute hairlike structures), the prototroch, that enables them to swim.  Each segment bears a pair of paddle-like and highly vascularized parapodia, which are used for movement and, in many species, act as the worm's primary respiratory surfaces. Bundles of bristles, called setae, the project from the parapodia.

So the correct answer is 'Trochophore'.

Multiple choice physics transfer of heat applications of convection convection thermal energy transfers

Birds glide effortlessly in the air with the help of

  1. Conduction of heat in the air

  2. Radiation of light through the atmosphere

  3. Convection currents of air

  4. More sugar
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When birds flap their wings the density of the air decreases nearby since the air particles move apart. This less dense air rises and helps the bird to keep flying. The denser air replaces this space. This movement is known as convection current of air. 

Multiple choice bio-chemistry organization of life concept of metabolism metabolism in animals metabolism

How many features listed below are exhibited by flatworms (A) and bacteria (B)?


(i) Growth by increases in mass only
(ii) Regeneration
(iii) Self-consciousness
(iv) Anabolism and catabolism
(v) Binary fission

  1. A - (i,ii,iii,iv) B- (i, iii, iv)

  2. A - (ii,iv) B- (iv, v)

  3. A - (ii,iii,iv) B- (i, iv, v)

  4. A - (i,ii) B- (iii, iv, v)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Flatworms exhibit regeneration and anabolism/catabolism. Bacteria exhibit anabolism/catabolism and binary fission. Growth by mass and self-consciousness are not universal to these groups in the context of these specific biological definitions.

Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals

Which of these is a multicellular organism?

  1. Amoeba

  2. Paramoecium

  3. Human beings

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A. Amoeba is a single-celled eukaryotic organism that moves by the means of pseudopodia.
B. Paramoecium is a unicellular eukaryotic organism. It is a ciliate.
C. Human beings are the multicellular primates, scientifically known as Homo sapiens.
So, the correct answer is 'Human beings'.
Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals

Which one from the following is an example of multicellular organism?

  1. Chlamydomonas

  2. Bacteria

  3. Snake

  4. Amoeba
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The cell is the structural unit of life. Unicellular organisms are made up of one cell that performs all the functions e.g., bacteria, amoeba, Chlamydomonas. Whereas, multicellular organisms are made up of numbers of cells and a differnt group of cells perform a different function to maintain life. Snake is an example of the multicellular eukaryotic organism.
Multiple choice botany living world of animals number and shape of cells unicellular and multicellular organisms diversity and classification in animals the cell structure cytoplasm cell parameters

Which of following organisms can be seen only under the microscope?

  1. Unicellular

  2. Multicellular

  3. Vertebrates

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Most unicellular organisms are of microscopic size and are thus classified as microorganisms, for example, Phytoplankton and protozoa range from about 0.001 mm to about 0.25 mm.
  • Most of the multicellular organisms and vertebrates are visible to the naked eye, which means that it is possible to view them without using the microscope.
    So, option A is the correct answer.
Multiple choice zoology skeleton and movements introduction to movement introduction to locomotion movement

Which of the following statements is not true ?

  1. The cartilage is not as hard as bones.

  2. A snake moves by making loops.

  3. All animals show exactly similar movements.

  4. Snails move with the help of their muscular feet.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
All animals do not show exactly similar movements.
Animal movements are usually based on their habitat. Different animals have different organs for locomotion. For example, Snakes crawl by forming loops while birds fly with their wings. 
Multiple choice zoology skeleton and joints introduction to movement introduction to locomotion movement

Which of the following features is common to all animals without any exception?

  1. Locomotion

  2. Specialised nervous system

  3. Multicellularity

  4. Herbivorous mode of nutrition
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Locomotion is the active movement i.e. with consumption of energy shown by all organism. Need, type and extent of locomotion differ from organisms to organism based on their organisation. 
  • The specialised nervous system is seen in only organisms with organ system level of organisation. 
  • Several organisms are unicellular, hence multicellularity is not a common feature of all organisms. 
  • All organisms differ in their mode of nutrition. They can be autotrophic or heterotrophic. If heterotrophic, they can be herbivores, carnivores or omnivores.
  • So, the correct option is 'Locomotion'.
Multiple choice zoology skeleton and joints introduction to movement introduction to locomotion movement

The amoeboid movements result from_____________.

  1. Interaction among actin, myosin, and ATP

  2. Coordinated beats of cilia

  3. Whip-like action of flagella

  4. Action by the mitotic spindle, similar to what happens during mitosis and meiosis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Interaction among actin, myosin and ATP

The amoeba uses two mechanically distinct mechanisms to push itself forward a filopodia - lamellipodia mechanism that depends on action polymerisation and a bleb mechanism in which a local region of membrane where the cortical - cytoplasmic pressure generated by myosin. 

Multiple choice zoology waste water story sewage treatment wastewater treatment - need and methods wastewater story

The masses of bacteria held together by slime and fungal filaments to form mesh like structures are called as

  1. primary sludge

  2. flocs

  3. activated sludge

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

Physical removal of particles by filtration and sedimentation. Then the grit is removed by sedimentation. All solids that settle form the primary sludge and the supernatant forms the effluent. The primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and the air is pumped into it. This allows vigorous growth of useful aerobic microbes into flocs (masses of bacteria associated with fungal filaments to form mesh-like structures).

So the correct option is "flocs".