Unit A: Topic 1 + 2 Flashcards
Ecosystem
Biological community interacting with its physical environment.
Competition
When Niches overlap and they fight over resources and it becomes rare
Population
amount of members of a species who live in a specific area and share resources.
Niche
role of an organism in its ecosystem
(What it eats, lives, and effect it leaves)
Commensalism
+/NA
Mutualism
+/+
Parasitism
+/-
Variation Benefits
Diseases are less-likely to pass down.
Helps them adapt to environment
Variation Consequences
Makes natural selection
Continuous v Discrete
Continuous - differences with a range of forms (hair color, eye color, height, etc.)
Discrete - differences that are either/or
(Roll tongue, hitch-hiker thumb)
Inheritable v Heritable traits
Inheritable - traits that are not passed down in generations (dyed hair, muscles)
Heritable - traits that are passed down to generation. (hair color, eye color)
Types of Asexual reproduction
Binary fission
Budding
Spore
Vegetative
Binary fission and A/E
a cell splits exactly in 2 producing 2 identical cells (single celled organism)
A - rapid population
Budding and A/E
Parent produces small version of itself attached to itself. (Yeast, coral)
A - parent supports next generation so it lasts
Spore and A/E
Spores created similar to seeds and then gets spread (mushrooms make ‘dust’)
A - Spores stay dormant until conditions are good
Vegetative and A/E
uses runners to grow daughter plants next to plant to take care of it.
A - Parent supports next generation until its grown
Zygote
new cell created from the gametes
Gametes F/M
Gametes are called sex cells
Female ones are called eggs
male ones are called sperm
Cleavage
when the zygote splits to make cells
Embryo
when Zygote splits many times
Pollen
Male gamete of plant
Stamen
male part of the plant where pollen is found
Ovules
female part of the plant
Pistil
Female part of the plant where ovules are found
