Biology ยท 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 characteristic feature of freshwater protozoa?

  1. They possess a cell wall made of cellulose.

  2. They have a complex life cycle involving multiple stages.

  3. They are heterotrophic and feed on organic matter.

  4. They are photosynthetic and produce their own food.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Freshwater protozoa are heterotrophic organisms, meaning they obtain their energy and nutrients by consuming organic matter from their environment.

Multiple choice

What is the primary mode of locomotion for most freshwater protozoa?

  1. Pseudopodia

  2. Flagella

  3. Cilia

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

Many freshwater protozoa, such as Paramecium and Vorticella, use cilia for locomotion. Cilia are hair-like structures that beat rhythmically, propelling the protozoa through the water.

Multiple choice

Which of the following is an example of a freshwater protozoan that uses pseudopodia for locomotion?

  1. Euglena

  2. Amoeba

  3. Paramecium

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

Amoeba is a freshwater protozoan that uses pseudopodia for locomotion. Pseudopodia are temporary extensions of the cell membrane that allow the amoeba to move and capture food.

Multiple choice

Which of the following is an example of a freshwater protozoan that forms colonies?

  1. Euglena

  2. Amoeba

  3. Paramecium

  4. Volvox
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Volvox is a colonial freshwater protozoan. It forms spherical colonies consisting of numerous individual cells, each with its own flagellum. The coordinated beating of these flagella allows the colony to move through the water.

Multiple choice

Which of the following freshwater protozoa is known for its ability to form symbiotic relationships with algae?

  1. Euglena

  2. Amoeba

  3. Paramecium

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

Euglena is a unique freshwater protozoan that can form symbiotic relationships with algae. It contains chloroplasts, which are photosynthetic organelles derived from ingested algae. This allows Euglena to photosynthesize and produce its own food, while also benefiting from the nutrients provided by the algae.

Multiple choice

Which of the following freshwater protozoa is known for its ability to form cysts?

  1. Euglena

  2. Amoeba

  3. Paramecium

  4. Giardia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Giardia is a freshwater protozoan that can form cysts. Cysts are dormant stages that allow the protozoa to survive in harsh conditions, such as extreme temperatures or lack of nutrients.

Multiple choice

Which of the following freshwater protozoa is known for its ability to cause diseases in humans?

  1. Euglena

  2. Amoeba

  3. Paramecium

  4. Giardia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Giardia is a freshwater protozoan that can cause giardiasis, a diarrheal disease in humans. It is transmitted through the ingestion of contaminated water or food.

Multiple choice

Which of the following freshwater protozoa is known for its ability to bioluminesce?

  1. Euglena

  2. Amoeba

  3. Paramecium

  4. Noctiluca
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Noctiluca is a marine and brackish water protozoan that is known for its bioluminescence. It emits a bright blue light when disturbed or agitated, creating a sparkling effect in the water.

Multiple choice

What is the primary habitat of freshwater protozoa?

  1. Lakes and ponds

  2. Rivers and streams

  3. Wetlands and marshes

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Freshwater protozoa are found in a variety of freshwater habitats, including lakes, ponds, rivers, streams, wetlands, and marshes. They can be abundant in both lentic (still water) and lotic (flowing water) environments.

Multiple choice

Which of the following freshwater protozoa is known for its ability to form temporary feeding structures called food cups?

  1. Euglena

  2. Amoeba

  3. Paramecium

  4. Vorticella
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vorticella is a freshwater protozoan that forms temporary feeding structures called food cups. These food cups are created by the fusion of several cilia, which form a funnel-shaped structure that helps the protozoa capture and ingest food particles.

Multiple choice

Which of the following is an example of an epiphytic Bryophyte?

  1. Marchantia polymorpha

  2. Riccia fluitans

  3. Anthoceros punctatus

  4. Tillandsia usneoides
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tillandsia usneoides, commonly known as Spanish moss, is an epiphytic Bryophyte that grows on trees and other plants.

Multiple choice

What is the role of symbiotic algae in corals?

  1. They provide corals with food

  2. They help corals build their skeletons

  3. They protect corals from predators

  4. They give corals their color
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Symbiotic algae, known as zooxanthellae, live in the tissues of corals and provide them with food through photosynthesis. They also give corals their color, as the algae contain pigments that absorb and reflect light.

Multiple choice

Which of the following is NOT a characteristic of dinosaurs:

  1. Bipedal stance

  2. Feathers

  3. Warm-blooded metabolism

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

Not all dinosaurs were bipedal. Some, like Stegosaurus, were quadrupedal.

Multiple choice

Which of the following is NOT a characteristic of freshwater amphibians?

  1. Smooth, moist skin

  2. Eggs laid in water

  3. Lungs for breathing air

  4. Scales covering their body
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Freshwater amphibians have smooth, moist skin, lay their eggs in water, and breathe air through lungs. Scales are a characteristic of reptiles, not amphibians.

Multiple choice

In the film 'Fantastic Fungi', what type of organism is explored for its ecological importance and potential medicinal properties?

  1. Bacteria

  2. Fungi

  3. Viruses

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

Fantastic Fungi is a 2019 American documentary film that explores the world of fungi and their ecological importance and potential medicinal properties.