Question

1. in the following food chain, which organism is the primary consumer? grass → rabbit → snake → hawk a. grass b. rabbit c. snake d. hawk 22. which of these is a possible food chain for this environment? a. sun + grass + fly + frog b. frog + fly + grass + sun c. sun → grass → fly → frog d. sun + fly + frog + snake 23. what does a primary consumer eat? a. tertiary consumers b. secondary consumers c. producers d. all choices are correct in the following food chain, which organism is the tertiary consumer? grass → rabbit → snake → hawk a. grass b. rabbit c. snake d. hawk what does a food web represent? a. all connections of energy flow throughout all organisms in a ecosystem. b. the specific ways that mutualism is carried out. c. a single pathway or energy flow between organisms. d. how carnivores get their food. bacteria, fungi, and earthworms are examples of: a. scavengers b. predators c. prey d. decomposers if a producer were to be removed completely from the food web, what organism would be affected first? a. the primary consumer b. the secondary consumer c. the tertiary consumer

Explanation:

1. In the food - chain "grass → rabbit → snake → hawk", a primary consumer eats producers. Grass is a producer, and rabbit eats grass, so rabbit is the primary consumer.
2. A food - chain starts with a producer (usually a plant that gets energy from the Sun). The correct food - chain is "Sun → grass → fly → frog" as grass is a producer, fly eats grass (or plant matter), and frog eats the fly.
3. Primary consumers eat producers. Producers are plants that make their own food through photosynthesis.
4. In the food - chain "grass → rabbit → snake → hawk", the tertiary consumer is the one that eats the secondary consumer. Snake is the secondary consumer (eats the primary consumer rabbit), and hawk is the tertiary consumer (eats the snake).
5. A food - web represents all connections of energy flow throughout all organisms in an ecosystem. It shows the complex inter - relationships between different food - chains.
6. Bacteria, fungi, and earthworms break down dead organic matter, so they are decomposers.

Answer:

1. B. Rabbit
2. C. Sun → grass → fly → frog
3. C. Producers
4. D. Hawk
5. A. All connections of energy flow throughout all organisms in an ecosystem.
6. D. decomposers