Bio Plants Review
Order by
57 terms
Terms | Definitions |
|---|---|
 sapwood | functional xylem |
| heartwood | not functional xylem |
| cohesion | water molecules binding with each other |
| adhesion | water molecules binding with something else |
| casparian strip | wraps around endodermis cells creating a seal that does not let water leave once it has entered |
| turgid | open |
| flaccid | closed |
| cork | non functional xylem |
| fibrous roots | primary root, equal sizes |
| taproot | primary root, one large root |
| adventitious root | roots that come from stems or leaves |
| climbing | roots grow from leaves and wrap around a stick/fence |
| arial | roots grow form stem into air |
| prop | roots that keep up the stem |
| pith and cortex | starch storage |
| xylem | transport of water and minerals from the root up |
| vascular ray | lateral transport of minerals and water |
| rootcap | protects the meristematic cells at the root tip |
| root hairs | projections that increase the surface area for absorbtion |
| endodermis | single layer of cells surrounding the pericycle |
| stele/central cylinder | inside the pericycle, contains the xylem and phloem |
| zone of elongation | where meristematic cells increase in length |
| zone of maturation | root cells become specialized |
| ovule | becomes seed |
| ovary | becomes fruit |
| anther | makes pollen |
| pistil | contains ovule |
| filament | supports anther |
| stigma | sticky knob that receives pollen |
| receptacle | where the flower parts attach |
| guard cells | regulate the opening and closing of the stomate, |
| stomate | the space between two guard cells |
| auxins | plant hormones that affect growth |
| gibberellins | affect the growth and development of seeds and fruits |
| cytokinins | stimulate cell division and growth, work with auxins for differentiation |
| ethylene gas | stimulates the ripening of fruits |
| abscisic acid | stimulate the shedding of leaves |
| tropism | plant response to a stimulus, can be positive or negative |
| phototropism | light |
| geotropism/gravitropism | gravity |
| thigmotropism | touch |
| hydrotropism | water |
| nastic movement | plant movement not necessarily in the direction of a stimulus of involving hormones (based on water) |
| photoperiodism | response to changes in the length of light or day |
| short day plants | receive long nights of darkness for flower budding |
| long day plants | receive short nights of darkness for flowering |
| stamen | male reproductive system |
| carpel/pistil | female reproductive system |
| pedicel | attachment of flower to stem |
| corolla | all the petals in a flower |
| calyx | all the sepals in a flower |
| double fertilization | both polar nuclei and eggs are fertilized |
| polar nuclei | diploid |
| egg cell | haploid |
| microphyle | entrance for sperm into ovule |
| endosperm | food source for monocots |
| cotyledon | food source for dicots |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.