Which of the following compete for space on intertidal

13 Jun Which of the following compete for space on intertidal

Question
Q1. Which of the following compete for space on intertidal rocks?

1) Algae and Barnacles

2) Whelk and Starfish

3) Algae, Barnacles, and Whelk

4) Starfish only

Q2. Which species eats Acorn Barnacles?

1)Mussel

2)Starfish

3)Whelk

4)Chiton

Q3. Which of these species is the most competitively dominant?

1)Black Pine

2)Goose-neck Barnacle

3)Nori Seaweed

4)Acorn Barnacle

Q4. What dramatically changes when Starfish are removed from the simulated system?

1)acorn and Goose Neck Barnacle populations increase in size.

2)the Mussel population increases in size.

3)The Coral Weed population increases in size.

4)The system remains largely unchanged.

Q5. Which of the following is NOT an essential characteristic of a keystone species?

A) Arelatively low abundance compared to other species in the community.

2)Removal of the species leads to a large change in the community.

3)Direct interaction (through competition or predation) with every other species in the community.

4)A high impact on the community relative to its population size.

(The diagrams below show very simplified species relationships for certain areas of African savanna. Use these simplified diagrams to answer the questions below. (Real-world savannas support more species with more complex relationships.)

Savanna Diagrams

Q6. If you fenced a plot of land in the savanna so that animals were completely excluded, over time, which type of plant would dominate the plot, according to the diagrams?

1)Grasses

2)Shrubs

3)Trees

4)None will dominate.

Q7. If you removed all the Lions from a large area of savanna, which of the following changes is most likely, according to the diagrams?

1)There would be fewer Cheetahs.

2)There would be more Zebra.

3)There would be more Grasses.

4)There would be more Elephants.

Q8. If you removed all the Cheetahs from a large area of savanna, which of the following changes is most likely, according to the diagrams?

1)There would be fewer Gazelle.

2)There would be fewer Shrubs.

3)There would be fewer Lions.

4)There would be fewer Grasses.

Q9. If you removed all the Elephants from a large area of savanna, which of the following two changes is more likely, according to the diagrams?

1)There would be fewer Trees.

2) There would be fewer Grasses.

Q10. Which species below is the best candidate for a keystone species? (Hint: Consult BOTH diagrams to get the answer!)

1)Elephants

2)Cheetahs

3)Lions

4)Zebras