Which one of the following is considered at the primary level in the food web?ans.AnabinaGreen plantsHomo sapienceNostoc Previous Marked for Review Next

Green plants are considered at the primary level in the food web. Here's why:

1. The food web starts with the primary producers, the organisms that can make their own food. These are typically plants that can photosynthesize, converting solar energy into chemical energy (food).

2. Green plants, being able to photosynthesize, are primary producers. They form the base of the food web, providing energy for the rest of the ecosystem.

3. The other options listed - Anabina, Homo sapiens, and Nostoc - are not primary producers. Anabina and Nostoc are types of cyanobacteria, which, while they can photosynthesize, are not typically considered the base of the food web. Homo sapiens, or humans, are consumers, not producers.

So, the answer is: Green plants.