Question
1. How many food chains make up this food web? 2. Which organism(s) is an autotroph? 3. Which organism(s) is an herbivore? 4. Which organism(s) is an omnivore? 5. Which organism(s) is a carnivore? 6. Which organism (s)is a tertiary (3x^ast d) consumer? 7. Which organism(s) belong to multiple trophic levels? 8. Why does the hawk have less energy available to it than the snake? 9. Which organism(s) are part of every food chain?
Answer
4.6
(278 Votes)
Emilia
Master · Tutor for 5 years
Answer
To answer these questions, we need to analyze the relationships between the organisms in the food web as described in the picture details. Let's go through each question step by step:1. How many food chains make up this food web?To determine the number of food chains, we need to identify all the possible sequences from producers to top consumers without repeating any sequence.Here are the food chains:- Plants → Birds → Snakes → Hawks- Plants → Birds → Hawks- Plants → Caterpillars → Frogs → Birds → Snakes → Hawks- Plants → Caterpillars → Frogs → Snakes → HawksSo, there are 4 distinct food chains in this food web.Answer: 4 food chains.2. Which organism(s) is an autotroph?Autotrophs are organisms that can produce their own food from sunlight or chemical energy. In this food web, the only autotrophs mentioned are plants.Answer: Plants.3. Which organism(s) is an herbivore?Herbivores are organisms that eat plants. According to the food web, birds and caterpillars eat plants.Answer: Birds and Caterpillars.4. Which organism(s) is an omnivore?Omnivores are organisms that eat both plants and animals. In this food web, birds eat plants and caterpillars, and frogs eat caterpillars (which are considered animals in this context) and are eaten by birds and snakes.Answer: Birds and Frogs.5. Which organism(s) is a carnivore?Carnivores are organisms that eat other animals. In this food web, snakes and hawks eat other animals (birds, frogs, and snakes).Answer: Snakes and Hawks.6. Which organism(s) is a tertiary (3°) consumer?Tertiary consumers are predators that eat secondary consumers. In this food web, hawks eat snakes, which are secondary consumers.Answer: Hawks.7. Which organism(s) belong to multiple trophic levels?An organism belongs to multiple trophic levels if it eats at different levels of the food chain. In this food web, birds eat plants (making them primary consumers) and are eaten by other animals (making them secondary consumers). Frogs eat caterpillars (primary consumers) and are eaten by birds and snakes (secondary consumers).Answer: Birds and Frogs.8. Why does the hawk have less energy available to it than the snake?According to the principle of energy transfer in a food chain, only about 10% of the energy is passed on from one trophic level to the next. Since hawks are at a higher trophic level than snakes, they have less energy available to them because of the energy lost at each transfer.Answer: The hawk has less energy available to it than the snake because it is higher up in the food chain, and energy decreases with each trophic level due to energy loss (approximately 90% at each transfer).9. Which organism(s) are part of every food chain?To be part of every food chain, an organism must be involved in all the chains listed. In this food web, the only organism that appears in every chain is the hawk.Answer: Hawks.