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

Vorticella and paramecium are the examples of

  1. Bacterivores

  2. Insectivore

  3. Herbivores

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

Bacterivores are free-living, generally heterotrophic organisms, exclusively microscopic, which obtain energy and nutrients primarily or entirely from the consumption of bacteria. Many species of amoeba are bacterivores, as well as other types of protozoan .e.g., Vorticella and paramuecium.

Multiple choice

Which of the following organisms can change its shape?

  1. Amoeba

  2. Plant

  3. Bacteria

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

Amoeba can change its shape due to its flexible cell membrane and cytoplasmic streaming, forming pseudopodia ('false feet') for movement and feeding. Plants have rigid cell walls, bacteria maintain fixed shapes, and algae have cell walls or structured forms.

Multiple choice

Which of the following statements is not true?

  1. The size of prokaryotic cell is smaller than eukaryotic cell.

  2. Prokaryotic cell has a single chromosome.

  3. Cell membrane of a eukaryotic cell bears respiratory enzymes.

  4. Nucleus is bound by nuclear membrane in eukaryotic cell.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The statement about eukaryotic cell membranes bearing respiratory enzymes is false. Respiratory enzymes are embedded in prokaryotic cell membranes where they perform electron transport. Eukaryotic cells perform respiration in mitochondria instead, with their membranes serving different functions like transport and signaling.

Multiple choice

Which of the following is a unicellular organism?

  1. Bacteria

  2. Fungi

  3. Plants

  4. Animals

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacteria are unicellular organisms, meaning they consist of only one cell. Fungi, plants, and animals are all multicellular organisms made of many cells working together. This is a fundamental classification in biology - organisms can be unicellular (like bacteria and amoeba) or multicellular (like humans and trees).

Multiple choice

Flat footed camels can walk easily in sandy deserts because

  1. pressure on the sand is decreased by increasing the area of the surface in contact

  2. pressure on the sand is increased by increasing the area of the surface in contact

  3. pressure on the sand is decreased by decreasing the area of the surface in contact

  4. pressure on the sand is increased by decreasing the area of the surface in contact
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pressure = Force / Area. Flat feet increase the surface area in contact with sand. For the camel's weight (constant force), larger area means LESS pressure on each unit of sand. This prevents sinking, similar to how snowshoes work on snow.

Multiple choice

Which of the following statements about bacteria is false?

  1. They have the ability to move.

  2. They have peptidoglycan cell walls.

  3. They reproduce by binary fission.

  4. They all have the same shape.

  5. They are prokaryotic.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacteria can be of different shapes such as rod, spiral, spherical, etc.

Multiple choice

What is the meaning of the word 'Eukaryote'?

  1. Single-celled organism

  2. No nucleus

  3. No nuclear membrane

  4. True nucleus

  5. Before nucleus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eukaryote word is derived from greek words Eu means true and karyon means nucleus; so true nucleus.