Page 16 - ingilizce

Fertilize : To supply nutrients to plants, or, to impregnate an egg.

Food chain : The sequence defined by who eats whom, starting with a producer (green plant).

Food web : The sequence defined by who eats whom, starting with producers and progressing

through various levels of consumers, including decomposers and predators. Many organisms
may be more than one level of consumer, depending upon whether they eat a plant, a

microorganism which has consumed a plant, or an animal which ate the microorganism which
ate the plant. A food web describes more complex linkages and interrelationships than a food

chain.

Fungi : A large group of organisms which reproduce by spores. The group includes
mushrooms, toadstools, molds and mildew.

Fungus : The plural of fungus is fungi.

Genus : A category of classification which groups organisms with similar characteristics. These

are more general than species characteristics.

Heart : Muscular thickening in blood vessels whose valves control the direction of blood flow.
Earthworms have several (commonly 5 pairs) of these blood vessels which connect the dorsal

to the ventral blood vessels.

Heavy metal : Dense metal such as cadmium, lead, copper, and zinc which can be toxic in

small concentrations. Build up of heavy metals in garden soil should be avoided.

Hemoglobin : Iron containing compound in blood responsible for its oxygen carrying
capacity.

Humus : Complex, highly stable material formed during breakdown of organic matter.

Immigrate : To move into a region.

Inoculate : To provide an initial set of organisms for a new culture.

Larva : Early form of any animal that changes structurally before becoming an adult. A

caterpillar is an insect larva which becomes a moth or butterfly as an adult.

Leach : To run water through a medium, causing soluble materials to dissolve and drain off.

Leaf mold : Leaves in an advanced stage of decomposition.

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