Biology · Science General

Diversity in Living Organisms

3,829 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 pairs of organs of animals is/are not homologous?

  1. Forelimbs of humans and lizards

  2. Forelimbs of frogs and lizards

  3. Forelimbs of humans and frogs

  4. Forelimbs of bats and butterfly

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. The forelimbs of bats and butterfly are not homologous organs as they have different basic design, though they are used for the same purpose.

Multiple choice

Which of the following statements is/are incorrect? (I) Mimicry is the ability of an organism to blend with background. (II) Camouflage allows animals to remain unnoticed from a distance. (III) The longest distance travelled by an animal is that of sea bird Arctic tern. (IV) A locust shows periodic migration.

  1. I, III

  2. III, IV

  3. I only

  4. II, III
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement I is incorrect - mimicry is resembling another organism or object for protection, not blending with background (that's camouflage). Statement II (camouflage allows animals to remain unnoticed from distance) is correct. Statement III (Arctic tern's longest migration) is correct. Statement IV (locusts' periodic migration) is correct.

Multiple choice

Which of the following statements is true for viruses?

  1. They are obligate intracellular parasites.

  2. They divide by binary fission.

  3. They have their own metabolism.

  4. They contain enzymes for the formation of 16S rRNA.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Viruses are obligate intracellular parasites - they cannot replicate outside host cells and lack independent metabolic machinery. They don't divide by binary fission (that's bacterial), don't have their own metabolism (depend entirely on host), and don't contain rRNA formation enzymes (they use host machinery).

Multiple choice

Which of the following statements is true about E.coli?

  1. It is a parasite present in the liver of humans.

  2. It shows syngamy and meiosis.

  3. It exhibits alternation of generation.

  4. It exists symbiotically in the colon of humans.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

E. coli is a commensal bacterium that normally exists symbiotically in the human colon (large intestine). It's not a liver parasite, doesn't undergo syngamy/meiosis (it reproduces asexually by binary fission), and doesn't show alternation of generations (a plant/algae lifecycle pattern).