Question

1. based on the marine biologists research journal entries: (a) sketch a food web for the portion of the great barrier reef that was being observed. (b) label the primary producer(s), primary consumer(s), and secondary consumer(s) in your food web. (c) label one autotroph, one herbivore, and one carnivore in your food web.

Explanation:

Step1: Understand food - web concept

A food - web is a graphical representation of feeding relationships in an ecosystem.

Step2: Identify primary producers

Primary producers in a reef ecosystem are usually algae (like phytoplankton and macroalgae) which perform photosynthesis. They are autotrophs.

Step3: Identify primary consumers

Primary consumers are herbivores that eat primary producers. In a reef, examples include parrotfish which eat algae.

Step4: Identify secondary consumers

Secondary consumers are carnivores that eat primary consumers. For example, groupers that eat parrotfish.

Step5: Sketch the food - web

Draw arrows from primary producers to primary consumers and from primary consumers to secondary consumers to represent the flow of energy.

Step6: Label the components

Label the primary producers, primary consumers, secondary consumers, autotroph, herbivore, and carnivore as per the above - mentioned examples.

Answer:

(a) Sketch a diagram with arrows showing feeding relationships. Algae (primary producer) → Parrotfish (primary consumer) → Grouper (secondary consumer). Add other relevant organisms and their feeding relationships as per the observed reef portion.
(b) Primary producer: Algae; Primary consumer: Parrotfish; Secondary consumer: Grouper.
(c) Autotroph: Algae; Herbivore: Parrotfish; Carnivore: Grouper.