TERM 1
Heterotroph
DEFINITION 1
A heterotroph (Greek heteros = "another", "different" and
trophe = "nutrition") is an organism that uses organic carbon
for growth.
TERM 2
fungi
DEFINITION 2
A fungus () is a member of a large group of eukaryotic
organisms that includes microorganisms such as yeasts and
molds, as well as the more familiar mushrooms.
TERM 3
Chitin
DEFINITION 3
n its unmodified form, chitin is transluc ent, pliable, resilient and
quite tough. In arthropods, however, i t is often modified, becoming
embedded in a hardened proteinace ous matrix, which forms much
of the exoskeleton. In its pure form it is leathery, but when
encrusted in calcium carbonate it be comes much harder.[1] The
difference between the unmodified and modified forms can be
seen by comparing the body wall of a caterpillar (unmodified) to a
beetle (modified).
TERM 4
mycelium
DEFINITION 4
Mycelium (plural mycelia) is the vegetative part of a fungus,
consisting of a mass of branching, thread-like hyphae.
TERM 5
Hyphae
DEFINITION 5
A hypha consists of one or more cells surrounded by a tubular cell
wall. In most fungi, hyphae are divided into cells by internal cross-
walls called "septa" (singular septum). Septa are usually
perforated by pores large enough for ribosomes, mitochondria and
sometimes nuclei to flow between c ells. The major structural
polymer in fungal cell walls is typically c hitin, in contrast to plants
that have cellulosic cell walls. Some f ungi have aseptate hyphae,
meaning their hyphae are not partiti oned by septa.
