Which one of the following living organisms completely lacks a cell wall?

Question

What do the terms phycobiont and mycobiont signify?

Answer 1

To determine which of the given organisms completely lacks a cell wall, we need to understand the basic characteristics of each option presented.

Cyanobacteria: These are a group of photosynthetic bacteria, also known as blue-green algae. They possess a cell wall made of peptidoglycan, similar to other bacteria.
Sea-fan (Gorgonia): Gorgonians are marine animals, not plants or bacteria. They belong to the phylum Cnidaria and are related to corals. As they are animals, they do not possess a cell wall; instead, they have a cellular structure without rigid support like a cell wall.
Saccharomyces: This is a genus of fungi, which includes yeasts like Saccharomyces cerevisiae. Fungal cells typically have a cell wall composed of chitin and other polysaccharides.
Blue-green algae: This term is often used interchangeably with cyanobacteria, which, as mentioned, have a cell wall.

Conclusion: Among the options, the one that completely lacks a cell wall is the Sea-fan (Gorgonia) because it is an animal.

Answer 2

To determine which of the given organisms completely lacks a cell wall, we need to understand the basic characteristics of each option presented.

Cyanobacteria: These are a group of photosynthetic bacteria, also known as blue-green algae. They possess a cell wall made of peptidoglycan, similar to other bacteria.
Sea-fan (Gorgonia): Gorgonians are marine animals, not plants or bacteria. They belong to the phylum Cnidaria and are related to corals. As they are animals, they do not possess a cell wall; instead, they have a cellular structure without rigid support like a cell wall.
Saccharomyces: This is a genus of fungi, which includes yeasts like Saccharomyces cerevisiae. Fungal cells typically have a cell wall composed of chitin and other polysaccharides.
Blue-green algae: This term is often used interchangeably with cyanobacteria, which, as mentioned, have a cell wall.

Conclusion: Among the options, the one that completely lacks a cell wall is the Sea-fan (Gorgonia) because it is an animal.

The Correct Option is B