Question

a chart of some plant systems and functions is shown
option\tsystem\tfunctions
1\troot\tabsorption of water and nutrients
2\tshoot\tseed dispersal and absorption of co₂
3\troot\trespiration and food storage
4\tshoot\tphotosynthesis and food transport
which system interactions are dependent on the plant’s ability to respond to the direction of light?
a option 1
b option 2
c option 3
d option 4
a student made a list of some ways that a species of fungi and a plant interact:

1. the fungus receives carbohydrates from the plant.
2. the fungus helps provide water to the plant’s roots.
3. the fungus provides minerals and nutrients to the plant.

based on this information, what is most likely the relationship between this species of fungi and the plant?
a mutualism
b commensalism
c parasitism
d predation
a student lists facts about raccoons:

1. coyotes and bobcats eat raccoons.
2. raccoons will eat fruit and nuts after they have dropped onto the ground.
3. raccoons eat a variety of foods, including fish, small rodents, and frogs.
4. raccoons can use their fingers to open garbage cans to eat what is inside.

which facts describe a predator - prey relationship?
a facts 1 and 2
b facts 1 and 3
c facts 2 and 4
d facts 3 and 4

Explanation:

First Question (Plant System Interactions)

To determine which system interaction depends on the plant's response to light direction, we analyze each option:

• Option 1 (Root: absorption of water and nutrients): Root functions like water/nutrient absorption do not relate to light response.
• Option 2 (Shoot: seed dispersal and absorption of CO₂): Seed dispersal and CO₂ absorption are not directly tied to light direction response.
• Option 3 (Root: respiration and food storage): Root respiration and storage are unrelated to light direction.
• Option 4 (Shoot: photosynthesis and food transport): Shoots (containing leaves) perform photosynthesis, which requires light. The shoot's growth (e.g., phototropism) responds to light direction to maximize photosynthesis, and food transport (from photosynthetic sites) is linked to shoot function. So Option 4 depends on light direction response.

• Mutualism: Both organisms benefit. The fungus gets carbohydrates (from the plant), and the plant gets water, minerals, and nutrients (from the fungus). This is a mutual benefit.
• Commensalism: One benefits, the other is unaffected. Here, both benefit, so not commensalism.
• Parasitism: One benefits at the other's expense. The fungus helps the plant, so not parasitism.
• Predation: One organism kills/eats another. Not applicable here.

So the relationship is mutualism.

• Predator - prey: One organism (predator) eats another (prey).
• Fact 1: Coyotes/bobcats (predators) eat raccoons (prey) – predator - prey.
• Fact 2: Raccoons eat dropped fruit/nuts – this is scavenging or herbivory, not predator - prey (fruit/nuts are not prey organisms).
• Fact 3: Raccoons eat fish, small rodents, frogs – raccoons (predator) eat these (prey) – predator - prey.
• Fact 4: Raccoons open garbage cans – scavenging, not predator - prey.

So Facts 1 (raccoons as prey) and 3 (raccoons as predator) describe predator - prey relationships.

Answer:

D. Option 4

Second Question (Fungi - Plant Relationship)