Plants: What are they?

Life as we know it… Fig 26.21

Plants grow and reproduce, as well as, respond to the environment.

Photosynthesis Cellular Respiration CO2 + H2O C6H1206 + O2 CO2 + H2O light Photosynthesis CO2 + H2O C6H1206 + O2 sugar Cellular Respiration CO2 + H2O C6H1206 + O2 sugar energy ADP ATP

Fig 6.9

Fig 9.1 Energy transfer

Cellular Differences between Animal Cells Plant Cells Character Cell Exterior Energy Extracellular Matrix of protein Cell Wall of cellulose Mitochondria only Chloroplast and Mitochondria

Plants grow at the tips: Meristems Fig 35.11 Plants grow at the tips: Meristems

Animals grow diffusely Fig 25.19

Fig 10.5 Photosynthesis: Plants can make sugar using energy from the sun, water from the ground, and CO2 from the air.

The inside of a leaf is mostly air Fig 10.3+35.18

Stomata control entry of CO2 and exit of H2O from plant leaves Fig 10.3 Stomata

Stomata on the underside of a leaf

Fig 36.15 Plant transportation

Fig 36.2 Plants transport water in xylem, sugar in phloem, plus minerals and hormones…

water transport limits plant growth

Fig 35.11 meristem The formation of wood

Fig 35.22 vascular meristem phloem xylem

For Monday- Types of Plant Cells: defined by function and cell wall