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Plant/Homeosta/Genet
7.7B, 7.13AB, 7.14ABC FORCES & MOTION IN PLANTS, HOMEOSTASIS IN ORGANISMS, HERED
| Term | Definition |
|---|---|
| STIMULUS | Action or condition that provokes a response. |
| RESPONSE | Change in a system resulting from a stimulus. |
| HOMEOSTASIS | Tendency of an organism or cell to maintain a balanced state so as to maintain health and function. |
| PATHOGEN | Microorganism or virus that can cause disease. |
| FIGHT-OR-FLIGHT | Short-term physiological changes in response to stress that prepare the body for intense activity to avoid harm. |
| INTERNAL STIMULUS | A change from within an organism, such as hunger and thirst, that causes the organism to respond. |
| EXTERNAL STIMULUS | Anything outside the body of the organism that can cause a response in an organism. |
| HEREDITY | Transfer of genetic information from parent to offspring. |
| DEOXYRIBONUCLEIC ACID (DNA) | Contains information that forms the hereditary material of all cells. |
| CHROMOSOME | Single, highly organized and structured piece of DNA. |
| GENES | Basic physical and functional unit of heredity made up of DNA. |
| GENOTYPE | Exact genetic information carried by a single individual. |
| PHENOTYPE | Physical appearance of an organism. |
| DOMINANT | Allele that is always expressed. |
| RECESSIVE | Allele that is only expressed if there is no different allele present. |
| TRAIT | Characteristic of an organism; can be genetic or acquired. |
| ALLELE | Different versions of a gene. |
| HOMOZYGOUS | Having two identical alleles for a particular trait. |
| HETEROZYGOUS | Having 2 different alleles for a particular trait. |
| NUCLEUS | Membrane-bound structure in eukaryotic cells that contains the DNA. |
| GENETICS | The scientific study of heredity. |
| ASEXUAL REPRODUCTION | Reproductive process that involves 1 parent & produces uniform offspring identical to the parent. |
| SEXUAL REPRODUCTION | Reproductive process involving 2 parents whose genetic material is combined to produce a new diverse organism different from themselves. |
| BINARY FISSION | Type of asexual reproduction in which 1 cell divides to form 2 identical cells, such as occurs in prokaryotic cells. |
| BUDDING | Type of asexual reproduction in which an offspring grows out of the parent organism. |
| VEGETATIVE PROPAGATION | Type of asexual reproduction by which 1 plant produces new plants that are genetically identical to the parent plant. |
| OFFSPRING | Product of reproduction, a new organism produced by one or more parents. |
| UNIFORM | The same all the way through; consistent. |
| DIVERSE | Different; varied. |
| REPRODUCTION | The production of offspring. |
| FORCE | Push or pull that can change the motion of an object. |
| MOTION | Change in an object's position with respect to time & in comparison to the position of other objects used as reference points. |
| GERMINATION | Process by which a plant grows from a seed, a.k.a. seedling emergence. |
| VACUOLE | Organelle in cell cytoplasm; functions to store water, nutrients, & wastes; 1 large central unit in plant cells, several small units in animal cells. |
| TURGOR PRESSURE | Force of water molecules against the cell wall that allows plants to stand up straight; "turg = swollen." |
| TROPISM | Turning of all or part of an organism in a particular direction in response to an external stimulus, e.g. gravity, light, water, touch, heat, etc. |
| PHOTOTROPISM | Orientation of a plant or other organism in response to light, either toward or away from the source of light; "photo = light." |
| HYDROTROPISM | Growth or turning of plant roots toward or away from moisture; "hydro = water." |
| GEOTROPISM/ GRAVITROPISM | Plant’s growth in response to the force exerted upon it by gravity; "geo = earth" & "gravi = gravity." |
| WILT | Become limp or droopy due to heat, loss of water, or disease. |
| TURGID | State of plant cells when their vacuoles are filled with water, causing the plant leaves to stand upright; "turg = swollen." |
| STOMATA | Small openings on the underside of a leaf through which oxygen, carbon dioxide, and water can move. |
| PHLOEM | The vascular tissue through which food moves in some plants. |
| XYLEM | The vascular tissue that carries water upward from the roots to every part of a plant. |
| EMERGENCE | Process of coming into view or becoming exposed after being concealed. |
| THIGMOTROPISM | A growth response to touch. |
| FLACCID | Limp, not firm; lacking vigor or effectiveness. |
| PHOTO = Light; GEO = Earth; GRAVI = Heavy; HYDRO = Water; THIGMO = Touch | Prefixes for types of tropisms. |
Created by:
trauberk
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