Life Science. Chapter 27 Diversity of Life on Earth. The Main Idea. Earth is home to millions of living species, including one celled bacteria, giant redwood trees and animals like us. About 1.5 million known species live on earth.
Diversity of Life on Earth
Origin of current classification system
Homo sapiens – human (wise human)
Canisfamiliaris– dog (intimate dog)
and tiger mate,
a liger is produced.
The liger is sterile.
show when speciation
vents get energy from
hydrogen sulfide- entirely
independent of the sun.
Single-celled protists that float in the ocean.
Have elaborate shells made out of silica
Used in man-made products like toothpaste
Singled-celled protists that live in the ocean.
When sunlight and nutrients are plentiful, they ‘bloom’ (reproduce rapidly) causing ‘red tides’ – ocean actually turns red because of the large amount of them
Some red tides are toxic
When shellfish eat the dinoflagellates, they become contaminated and poisonous to humans.
Flagellates- move by whipping a long flagellum
have to swim through a film
of water to the eggs
habitats like bogs and
Important: Fruit is the name for the seed covering of a flowering plant- it refers not to just our ’fruits’ but also many
of our vegetables
Huge group of animals that includes lobsters, barnacles, spiders, scorpions, ticks, centipedes, insects, and many other species
Found in every known habitat on earth