lab 8 botany
Terms
undefined, object
copy deck
- tiny hairs on the surface of leaf blades
- trichomes
- blade is attached to a stem like appendege called
- petiole
- if the blade doesnt have a petiole attaching it to the stem
- sessile
- leaf like structures at attachment point of stem
- stipules
- phyllotaxy
- alternate, spiral, opposite, or whorled
- 1 leaf per node
- spiral phyllotaxy
- 2 leaves per node
- opposite phyllotaxy
- 3 or more leaves per node
- whorled phyllotaxy
- arrangement of leaves on a twig
- phyllotaxy
- veins branch randomly like a net
- dicot, reticulate vinnation
- two main dicot leaf venation patterns
- pinnate and palmate venation
- single blade not divided into leaflets
- simple leaves
- blade divided into smaller leaflets
- compound leaves
- leaflets originating at single point at the end of a petiole
- palmately compound
- leaflets come off a central extension of the petiole
- pinnately compound
- extention of a petiole
- rachis
- 3 types of tissue in dicot leaves
- epidermis, mesophyll, and veins
- tightly packed parenchyma cells
- palisade mesophyll
- loosly packed parenchyma cells
- spongy mesophyll
- spongy mesophyll function:
- store starch
- monocot tissues
- epidermis, buliform cells, 1 mesophyll layer, bundle sheaths
- plants found in arid conditions
- xerophytes
- plants found in wet conditions, floating
- hydrophytes
- starshaped cells
- astrosclerids
- plants in normal conditions
- mesophytes
- in the main vein of the leaf, where is xylem and phloem found?
- xylem- on top of leaf, phloem- on bottom
- spongy mesophyll cells that have lots of air spaces in them are called
- aerenchema cells