Question

A new soil microorganism has been described. On some growth media, it forms colonies of unicellular organisms, but under certain conditions, it forms long, multicellular filaments and spores. The cells have nuclei, and their cell walls are composed of chitin.

To which of the following groups does this new organism belong?


A. protozoa
B. fungi
C. archaea
D. algae
E. bacteria

Answer 1

B. fungi

Step-by-step explanation:

The new orgnism in the question is a fungus whcih is included in the Kingdom Fungi. The body of a fungus is called mycelium. The mycelium is made of many hypha. Each cell of a hypha have cell wall. The fungal cell wall is made of chitin which is a derivate of glucose.

Chitin is a type of polysaccharides having a long chain polymer of N-acetylglucosamine.

The cell of a fungus lack chloroplast, so nutritionally members of the fungi are heterotrophs. They feed on dead and decaying matter, thus they are saprotrophs.

Answer 2

The correct answer is option B, that is, fungi.

Step-by-step explanation:

The body of a fungus is formed of tiny tubes or filaments known as hyphae. It comprises nuclei and cytoplasm. A tangled mass of hyphae is known as mycelium, which enhances the surface area of the fungi to captivate more nutrients.

Fungi are eukaryotic, most of the fungi are multicellular, while some are unicellular like yeast. The cell walls of fungi are formed of chitin in place of cellulose like that found in a plant. Thus, the mentioned organism belongs to fungi category.