Definition
Nature selects which organisms survive and pass on genetic material; leads to changes in genetic variation.
Natural Selection
Which cell structure is found in plant cells but NOT in animal cells?
Chloroplasts
In an energy pyramid which trophic level contains the most energy?
Producers
What does secondary succession begin with?
soil
Producers get their energy from the moon
false
Code for inherited traits; located on chromosomes in the nucleus of a cell.
Genes
Which organelle is responsible for producing energy (ATP) in both plant and animal cells?
Mitochondria
What is the trophic level at the bottom of the energy pyramid?
Producers
which type of adaptation is a structural feature like a bird's beak shape or a polar bear's white fur?
c. Physical adaptation
Every organism receives 10% of the energy from their food.
True
The complexity and the number of species in an environment.
Biodiversity
Which cell structure stores food, water, and waste products?
Vacuole
What comes after Producers?
Primary Consumers
Compare how long primary succession takes and secondary succession takes to occur
Primary takes hundreds of thousands of years
Secondary takes over decades only
Primary Succession starts with soil
False
Humans select which organisms survive and pass on genetic material; leads to less genetic variation.
Selective Breeding
Which cell structure controls cell activities and contains genetic material?
Nucleus
4
Which organisms are typically the first to colonize an area during primary succession?
A. Large trees
B. Lichens and mosses
C. Animals and Insects
Lichens and mosses
Ribosomes synthesize to make proteins
True
Two parents; more genetic diversity; greater adaptability to environmental changes.
Sexual Reproduction
The cell membrane is selectively permeable. What does this mean for substances entering and leaving the cell?
It regulates what exits and what enters.
In a food web, if the population of rabbits (primary consumers) suddenly decreased, what would most likely happen to the grass (producers) and the foxes (secondary consumers).
Grass would increase, foxes would decrease.
Two species of birds both eat the same type of seeds in a forest. This is an example of -
A. predation
B. mutualism
c. competition
competition
A cell wall holds the structure for the cell.
True