Plant anatomy

4. A carbon fixation pathway that evolved in some plants as an adaptation to arid conditions that allows a plant to photosynthesize during the day, but only exchange gases at night.
6. A band-like thickening in the center of the root endodermis (radial and cell walls) of vascular plants.
9. A very fine fibril, or fiber-like strand, consisting of glycoproteins and cellulose.
10. A natural, internal process that regulates the sleep–wake cycle and repeats roughly every 24 hours.

1. A species of plant that has adaptations to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic.
2. The exudation of drops of xylem sap on the tips or edges of leaves of some vascular plants, such as grasses, and a number of fungi.
3. A phenomenon in which the static pressure of the liquid reduces to below the liquid's vapour pressure, leading to the formation of small vapor-filled cavities in the liquid
5. The process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.
7. The process of absorption of vitamins, minerals, and other chemicals from food within the gastrointestinal tract, as part of the nutrition of an organism.
8. The process by which living organisms produce minerals, often to harden or stiffen existing tissues.