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 can be excluded from the general characteristics of protista?

  1. The cell wall of red algae is made up of agar and carageenan.

  2. In brown algae, cell wall is made up of lignin and cellulose.

  3. Plant-like protists contains xanthophylls, phycobilins, and carotene.

  4. They are regarded as the true eukaryotes.

  5. They are either free-living or parasitic.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In brown algae, cell wall of algin and cellulose protects them against waves and exposure to air. This component ensures uniform freezing and melting of food items. 

Multiple choice

Which of the following is/are characteristic(s) of organisms belonging to Phylum of flatworms?

  1. Bilaterally symmetrical, dorso-ventrally flattened and mostly un-segmented body
  2. Diploblastic animals
  3. Well developed blood vascular system

  1. Only 1

  2. 1 and 2

  3. 1 and 3

  4. 2 and 3

  5. Only 3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Out of the given characteristics, only 1 is correct for organisms belonging to Phylum Platyhelminthes. Bilaterally symmetrical, dorso-ventrally flattened and mostly un-segmented body is characteristic feature of organisms belonging to Phylum Platyhelminthes or phylum of flatworms.

Multiple choice

Which of the following statements are true about bacterial cell?

  1. The bacterial cell wall is composed of chitin.
  2. The cytoplasm of a bacterium is supported by microtubules.
  3. A gram-positive bacterium is stained purple by the gram stain.
  4. Bacterial flagella propel the cell by using a rotating motion.

  1. Only 1 and 2

  2. Only 1 and 3

  3. Only 2 and 3

  4. Only 2 and 4

  5. Only 3 and 4
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Both are true statements. A gram-positive bacterium is stained purple by the gram stain. Bacterial flagella propel the cell by using a rotating motion.