Diversity in Living Organisms

Prokaryotic organization is characterized by the absence of a membrane-bound nucleus and organelles, which is typical of Bacteria and Blue-Green Algae (BGA/Cyanobacteria).

Viruses are considered to be on the borderline between living and non-living because they lack metabolic machinery and cannot reproduce outside a host cell, so they were excluded from Whittaker's classification.

Kingdom Animalia consists of multicellular, eukaryotic, heterotrophic organisms that lack a cell wall and typically exhibit complex body organization.

Kingdom Plantae consists of multicellular, eukaryotic, photosynthetic organisms that possess cell walls made of cellulose.

Aplanospores are non-motile spores that lack flagella, whereas zoospores are motile spores that possess flagella.

Fungi thrive in warm and humid environments, which is why they are often found on bread or rotting fruit in such conditions.

Chitin is a polysaccharide that forms the structural component of fungal cell walls. It provides rigidity and protection. Desmids have cellulose cell walls, euglenoids (note: typo in option) have proteinaceous strips, and dinoflagellates have cellulose plates. Chitin is also found in arthropod exoskeletons.

Entamoeba is a genus of amoeboid protozoa. It is a parasite that lives in the intestines of humans and other animals.

Protozoa are considered to be primitive relatives of animals because they are heterotrophic and move to capture food, similar to animals.

Protozoa are heterotrophs that live as predators or parasites. They are classified based on their mode of locomotion.

Under suitable conditions, slime molds aggregate to form a structure called plasmodium, which can grow to several feet in length.