Question

1. On what basis the classification is done?
2. How are Saprohytic fungi useful to the soil. 3. Differentiate the two types of animal groups. 4. What are rhizoids? What is the role of these structures. 5. Explain the structure of amoeba with the help of diagram

Answer 1

Answer:

amoeba has nucleus in it's centre

Answer 2

Answer:

1.Biological classification is the scientific procedure of arranging the organisms in a hierarchical series of groups and sub-groups on the basis of their similarities and dissimilarities.

2.Saprophytic fungi produce enzymes that allow them to decompose cellulose, hemicellulose, and pectin. Some wood decaying fungi can also decomposed lignin. Saprophytic fungi decompose nonliving organic matter and they are important agents in soil mineralization processes and carbon cycling.

4.In fungi, rhizoids are small branching hyphae that grow downwards from the stolons that anchor the fungus to the substrate, where they release digestive enzymes and absorb digested organic material. ... In land plants, rhizoids are trichomes that anchor the plant to the ground.

5.Amoeba exhibits movement by the pseudopodia.

. Like an ordinary cell the body of amoeba has 3 main parts:

.Plasma lemma or plasma membrane, Cytoplasm and nucleus.

.Plasma lemma is a very thin, delicate and elastic cell membrane of amoeba.

.It is composed of a double layer of lipid and protein molecules.