Spring 9 Week Assessment REVIEW. Which two species are more closely related? A. bears & raccoons or B. raccoons & badgers. Raccoons and badgers. Which species is the most closely related to the guinea pig?. squirrel. Which two species have the most characteristics in common?.
Raccoons and badgers
Chimpanzee and bonobo
Human activities can cause certain species to become extinct, by affecting the species habitat or food supply.
Could species adapt to different surroundings and food over time?
No, adaptation takes time
The fish can’t adapt fast enough
Low rate of reproduction.
They only have 1-2 cubs every three years.
Which species according to natural selection will survive?
The species with the best adaptations, which give it an advantage. Survival of the fittest.
Pseudomonas it called?aeruginosa, a common bacteria, fights off competitors by injecting them with toxic proteins using a needle like puncturing device…
Mutualism, they both get something good.
If desert bats pollinate cactus flowers, where do you think they get their food?
From the cactus!
What type of relationship is it?
Both get something good.
Which level provides the most energy? they get their food?
If there are 10 kilocalories of energy they get their food?at the tertiary consumer level in a habitat, how many kilocalories would be at the producer level?
In a habitat, horned toads eat ants and ants eat grass. What would happen if the number of horned toads increased?
The number of ants will decrease & the amount of grass will increase
The cycle will be disrupted and slowed
What trophic level of a food web would be the most damaging if it died out?
Can you explain why?
All the energy in the system starts with the producers. All other levels would run out of food eventually.
What would happen if the bird population increased? if it died out?
The grasshoppers would decrease and the grass and snakes would increase
Fox if it died out?
Explain which animals would be affected if a disease killed out all the grass.
All would be affected because of lack of food.
What is an example of a herbivore? if it died out?
Any organism that eats producers. Deer, Rabbit, Mouse etc…..
What are 2 synonyms for producer?
Which level contains the herbivores? if it died out?
Where do herbivores get their energy? if it died out?
What happens to the other 90%?
Used by the organisms at that level & given off as heat
Most energy is given off as heat
In the nitrogen cycle, what organisms that live in soil and on roots fix or make usable by plants the greatest amount of nitrogen?
Bacteria fix the most nitrogen.
Are bacteria biotic or abiotic?
Becomes nutrients for other organisms
A virus does not replicate on its own, but prokaryotic cells do replicate on their own.
They induce the body to recognize the pathogen as foreign.
A virus attacks the cell’s genetic material, while bacteria use toxins to kill a cell.