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

What is a cyst?

  1. A protective coating over microorganisms

  2. Reproductive organs in fungi and bacteria

  3. Appendages in diatoms for locomotion

  4. A colony of bacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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Multiple choice

Which of the following organisms are acellular?

  1. Virus

  2. Bacteria

  3. Fungi

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

Acellular organisms are those that are not composed of cells. They are different from other cellular organisms as they cannot divide, and they lack the ability to synthesize proteins. For example: virus.

Multiple choice

Yeasts belong to which of the following kingdoms?

  1. Monera

  2. Protists

  3. Fungi

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

Yeasts belong to Kingdom Fungi.Yeast size can vary greatly depending on the species, typically measuring 3–4 µm in diameter, although some yeasts can reach over 40 µm.[4] Most yeasts reproduce asexually by mitosis, and many do so by an asymmetric division process called budding.

Multiple choice

Which of the following options is a characteristic feature of Arthropods?

  1. Jointed legs

  2. Pseudocoelomic body cavity

  3. Segmented body

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

Jointed legs is a characteristic feature of Arthropods.The arthropod body plan consists of segments, each with a pair of appendages. The rigid cuticle inhibits growth, so arthropods replace it periodically by moulting.

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.