| A | B |
|---|
| type of leaf with parallel venation | monocot |
| arrangement of leaflets or veins in which they branch off from a central rachis or vein | pinnate |
| arrangement of leaflets or veins in which they branch off from a central point | palmate |
| a leaf made of leaflets | compound |
| a leaf made of 1 blade | simple |
| determines if a leaf is simple or compound | position of axillary bud |
| area of the petiole that deteriorates & allows leaves of deciduous trees to drop in the autumn | abscission zone |
| type of leaf that specializes in protection | spine |
| type of leaf that specializes in water storage | succulent |
| type of leaf that specializes in support | tendrils |
| vascular structure of leaves | veins |
| flat area of a leaf | blade |
| a leaf's stem | petiole |
| structure on the lower epidermis of a leaf that allows for gas and water exchange | stomata |
| cells that surround the stomata and regulate its opening/closing | guard |
| when stomata are open | night; humid |
| when stomata are closed | sun; photosynthesis; dry |
| conifer leaves | needles |
| function of evergreen needles | reduce surface area & transpiration |
| leaves attached directly across from each other on a stem | opposite |
| leaves attached in a staggered fashion on a stem | alternate |
| leaves attached around a stem | whorled |
| jagged leaf margine | toothed |
| tissue of photosynthesis | palisade parenchyma; spongy mesophyll, guard cells |
| waxing covering of the epidermis that protects from drying out | cuticle |
| protective tissue of a leaf blade | epidermis |
| process responsible for giving off 99% of the water taken up by plants | transpiration |
| the vein that goes from the base to the tip of many leaves | midrib |
| leaves attached directly to the stem, without a petiole | sessile |
| protects a later bud | scale |
| hairy leaves, stomates only on lower epidermis, thck cuticle, stomates in crypts | methods of water retention in leaves |
| location of stomates on hydromorphic plants | upper epidermis |
| increases surface area for light; shake off insects; increase carbon dioxide; reduce heat | advantages of a petiole to the leaf |
| leaflets & petioles | reduce insect damage to leaf |
| protection, support, storage, food production | leaf functions |
| loosely arranged cells in the leaf | spongy mesophyll |
| midrib for support of the leaf | rachis |
| area of most photosynthesis in a leaf | palisade parenchyma |
| insect trapping plants | bladderworts, pitcher plants, sundews, |
| plants with transparent windows for capturing sunlight | sundew |
| floral leaves (as in the poinsettia) | bracts |
| reason leaves turn colors in the fall | shortened hours of sunlight & breakdown of chlorophylls |
| source of digitalis to regulate heartbeat | foxglove leaves |
| source of fibers for ropes & twine | agave leaves |
| source of scents for perfume | patchouli, lavendar, camphor leaves |
| source of crack & cocaine | coca leaves |
| fuel source in Chili & Peru | yareta leaves |
| treats skin burns | aloe leaves |
| dye sources | bearberry, henna & blue ash leaves |
| spices | thyme, marjoram & savory leaves |
| provide insecticides | cockroach plant leaves |
| female flower hairs contain THC | marijuana |
| leaflets of a pinnately compound leaf subdivided into still smaller leaflets | bipinnate |
| extra credit code word | Merry Christmas |
| another name for succulent leaves | xeromorphic |
