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Flashcards in protists Deck (23):
1

Protist

Protists are eukaryotic organisms that cannot be classified as a plant, animal, or fungus. They are mostly unicellular, but some, like algae, are multicellular.

2

Heterotroph

All animals, protozoans, fungi, and most bacteria are heterotrophic.

3

Eukaryote

Any of the single-celled or multicellular organisms whose cell contains a distinct, membrane-bound nucleus.

4

Decomposer

An organism whose ecological function involves the recycling of nutrients by performing the natural process of decomposition as it feeds on dead or decaying organisms. Supplement.

5

Parasite

An organism that lives and feeds on or in an organism of a different species and causes harm to its host.

6

Host

is an organism that harbors a parasitic, a mutual, or a commensal symbiont, typically providing nourishment and shelter.

7

Fungi

any of a large division (Eumycota) of thallophytes, including molds, mildews, mushrooms, rusts, and smuts, that are parasites on living organisms or that feed upon dead organic material: fungi lack chlorophyll, true roots, stems, and leaves, and reproduce by means of spores: in some systems of biological classification

8

Spore

is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavorable conditions.

9

Lichen

A composite organism made up of a fungus, usually an ascomycete, that grows symbiotically with an alga or a cyanobacterium and characteristically forms a crustlike or branching growth on rocks or tree trunks.

10

Nonvascular plant

belong to the division Bryophyta, which includes mosses, liverworts, and hornworts

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Vascular plant

Vascular plants also known as tracheophytes and also higher plants, form a large group of plants that are defined as those land plants that have lignified tissues for conducting water and minerals ...

12

Gymnosperm

A vascular plant in which the seeds are not enclosed by a ripened ovary (fruit) Supplement.

13

Angiosperm

A flowering, fruit-bearing plant or tree known for having ovules (and therefore seeds) develop within an enclosed ovary.

14

Photosynthesis

the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.

15

Cellular respiration

he chemical process that generates most of the energy in the cell, supplying molecules needed to make the metabolic reactions (see metabolism) of an organism run.

16

Transpiration

is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves.

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Tropism

the turning of all or part of an organism in a particular direction in response to an external stimulus.

18

Gravitropism

is a turning or growth movement by a plant or fungus in response to gravity.

19

Phototropism

the orientation of a plant or other organism in response to light, either toward the source of light or away from it

20

Asexual Reproduction

A form of reproduction that does not involve meiosis, ploidy reduction or fertilization, and the offspring is a clone of the parent organism;because of no exchange of genetic material.

21

Toxoplasmosis

An acute or chronic, widespread disease of animals and humans caused by the obligate intracellular protozoon toxoplasma gondii, transmitted by oocysts containing the pathogen in the faeces of cats

22

Malaria

An infectious disease caused by protozoan parasites from the Plasmodium family that can be transmitted by the bite of the Anopheles mosquito or by a contaminated needle or transfusion

23

Giardia

an intestinal disorder characterized by abdominal discomfort and prolonged, intermittent diarrhea, caused by the protozoan Giardia lamblia and contracted by drinking untreated water, as of streams or ponds, contaminated with the feces of infected animals. Expand. Also called beaver fever.