Plants
The plant body lives simultaneously in air and in soil.
Identify parts of a leaf
Cuticle, upper epidermis, palisade layer, bundle sheath, vascular bundle, spongy mesophyll, air space, lower epidermis, cuticle, and stomata
Transpiration
It is the loss of water through stomata of the leaf
What affects the rate of transpiration
the rate increase due to high temperature, wind, and low humidity
the rate decreases due to low temperature, and high humidity
Tropism
Coordination by hormones.
Phytochrome
response to light throughout plants life from germination of seeds to flowering =
Taxonomy
Every organism has a scientific name consisting of two parts: genus and species names
Three - Domain System of Classification
Scientist have classified all organisms into 3 major domain based on DNA analysis.
Domain Bacteria
All are single celled prokaryotes
Domain Archaea
All are single celled prokaryotes includes methanogens, halophiles, thermophiles
Domain Eukarya
All are eukaryotic contain cells with internal membranes and organelles
Comparison of Bacteria, Archaea, Eukaryotes
None of them are exactly alike
Cladograms
Diagrammatic representation of evolutionary history based on DNA comparisons