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

Which of the following is a protochordate?

  1. Asterias

  2. Amphioxus

  3. Chiton

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

Amphioxus is a protochordate, also called lancelet. They are small marine animals found widely in the coastal waters of the warmer parts of the world and less commonly in temperate waters.

Multiple choice

Alginic acid is found in the cell wall of

  1. Gigartina

  2. Laminaria

  3. Gelidium

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

Alginic acid or alginate is found in the middle lamella and primary cell walls of sea weeds such as, Laminaria, Macrocystis, Ascophyllum, etc.

Multiple choice

Unicellular eukaryotic animals are placed in the kingdom

  1. Animalia

  2. Protista

  3. Metaphyta

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

The kingdom Metaphyta (or the plant kingdom in its true sense) includes all the eukaryotic, multicellular, photosynthetic plants found in this biosphere. Kingdom Animalia includes multicellular eukaryotic heterotrophic organisms. Kingdom Monera includes unicellular prokaryotic organisms.

Multiple choice

Members of Kingdom Animalia are

  1. Unicellular

  2. Multicellular

  3. Mostly unicellular, a few multicellular

  4. Mostly multicellular, a few unicellular
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

fact

Multiple choice

Diatoms have

  1. cell wall of cellulose

  2. cell wall of silica

  3. no cell wall

  4. flagellated cell wall
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diatoms are a group of algae characterised by the presence of a silicated cell wall called frustule.

Multiple choice

Match organisms in Group I with flagellar arrangements in Group II and shapes in Group III.

Group I
Group II
Group III
P. Staphylococcus aureus 1. peritrichous i. spherical
Q. Pseudomonas aeruginosa 2. monotrichous ii. rod-shaped
R. Escherichia coli 3. non-flagellated

  1. P - 1 - i, Q - 2 - i, R - 3 - ii

  2. P - 1 - ii, Q - 3 - i, R - 2 - ii

  3. P - 2 - ii, Q - 1 - i, R - 3 - ii

  4. P - 2 - ii, Q - 3 - i, R - 1 - i

  5. P - 3 - i, Q - 2 - ii, R - 1 - ii
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Staphylococcus aureus is a non-flagellated, spherical, Gram-positive bacterium. Pseudomonas aeruginosa is a monoflagellated (monotrichous), rod-shaped, Gram-negative bacterium. Escherichia coli is a peritrichous, rod shaped, Gram-negative bacterium.

Multiple choice

Which of the following genera of mollicutes do not exhibit respiratory metabolism?

  1. Mycoplasma
  2. Ureaplasma
  3. Acholeplasma
  4. Anaeroplasma
  5. Spiroplasma

Select the correct answer using codes given below:

  1. 1, 2 and 3

  2. 1, 2 and 4

  3. 1, 3, 4 and 5

  4. 2, 3, 4 and 5

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

Mycoplasma exhibits fermentation metabolism. Acholeplasma exhibits fermentation metabolism. Anaeroplasma exhibits fermentation metabolism. Spiroplasma exhibits fermentation metabolism.

Multiple choice

Which of the following organisms has the capacity of regeneration?

  1. Planaria

  2. Amoeba

  3. Plasmodium

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

If an individual is somehow cut or broken up into many pieces, many of these pieces grow into separate individuals. For example, simple animals like Hydra and Planaria can be cut into any number of pieces and each piece grows into a complete organism.