Relationships
A black widow spider catches insects to eat. What type of relationship exists between the black widow and the insects?
Predation
The first BIOTIC factor in any food chain/web that takes in energy from an ABIOTIC source is always what type of organism?
Producer
What is the carrying capacity of bacteria in data set 5?
about 2,000 bacteria
What is an animal that eats ONLY plants called?
Herbivore
Epiphytes are plants that grow on trees. The epiphytes get a place to live without harming the trees. What type of relationship is this?
Commensalism
Look at the desert biome food web paper. Fill in the missing link of the following food chain:
Star cactus > Kangaroo rat > __________ > Rattlesnake > Bacteria
Tarantula
Look at data set 3 on your paper and read the caption. What is the main limiting factor of the bacteria in data set 3?
Resources (it says they run out)
If an animal eats insects such as beetles and plant material such as seeds and berries, what type of consumer would it be?
Omnivore
What type of relationship exists between the spider crab and the algae? Spider crabs live in shallow areas of the ocean floor, and greenish-brown algae lives on the crabs' backs, making the crabs blend in with their environment, and unnoticeable to predators. The algae gets a good place to live, and the crab gets camouflage.
Mutualism
Identify the trophic level of each organism in the food chain (must get all to get 300 points):
grass > rabbit > rattlesnake > bacteria
producer > primary consumer > secondary consumer > decomposer
Look at the "Reproduction of Moss" graph. What temperature range seems best for moss reproduction according to the data?
10-16 degrees Celsius (if they say 14-16 degrees, that is also an acceptable answer since that is the highest bar)
What is the greatest population an environment can hold?
Carrying Capacity
Aphids are insects that eat the sap from the plants on which they live. When they eat the sap, the aphids get essential nutrients, but they take nutrients away from the plants. What type of relationship do the aphids and plants have?
Parasitism
If the PRODUCER of a food chain took in 56,000 kcal of energy, how much of that energy would the secondary consumer receive?
about 560 kcal
Look at the "Reproduction of Moss" graph on your paper. What would you expect to happen to the population of animals that rely on the moss for food if the average July temperature rose by 3 degrees Celsius?
The population would likely decline because the moss would likely reproduce less, leaving the animals that eat moss with less food :(
What trophic level includes organisms that EAT TERTIARY consumers?
Quaternary consumers
Look at the desert biome food web on paper. You must answer both questions to get your 500 points.
1. What relationship do the HAWK and RATTLESNAKE have with each other?
2. What would you expect to happen to the HAWK population if the RATTLESNAKE population declined because humans were killing them?
1. Competition
2. The hawk population might rise because they would have less competition for food
What causes the amount of energy to decrease as you move up the food chain?
Read the caption under data set 5 on your paper. What is the main LIMITING FACTOR of those bacteria?
Living Space
If an organism is the top predator of a food web and has nothing that eats it, what is it called?
Apex predator