All scientific names, such as the scientific name for honey bees, apis mellifera, are part of a binomial nomenclature. which of the following statements about scientific names is true? a. scientific names for common species only have one word. b. the first name in a scientific name represents the genus. c. the second name in a scientific name represents the phylum. d. species typically have several different scientific names.

Answer is B. The first name in a scientific name represents the genus.

Binomial nomenclature is the system of naming organisms in a scientific way. This system was developed by Carl Linnaeus.  Each scientific name in binomial nomenclature consists of two names, also called descriptors or epithets. The first word is the generic name which describes the genus that an organism belongs to. The second word is the specific name which refers to the species of the organism.  

Typically, the words have a Latin base and describe the genus or species with references to traits that are specific to the group. When scientific name of an organisms is written, the text of a scientific name is usually italicized or underlined. The generic name is begins with capital letter, while the specific is written in small letter (in lower-case). For example, scientific name of humans is Homo sapiens. ‘Homo’ is generic name and ‘sapiens’ is specific name.  

phagocytosis; lysososmes

Explanation:

The sponges are multicellular animals but they do not form tissues. They have aggregated cells body plan. Thus, they do not have organs, such as the mouth. Sponges are the members of Porifera which means they are pore-bearing animals. Their body is covered with tiny pores (ostia) which lead to a canals system. Within the canals, chambers are lined with special cells called collar cells (choanocytes). The collar cells have sticky collars which engulf tiny bits of food that brought with the water. Digestion takes place within the cells by enzymes secreted from lysosomes.