Question

1. many plants have thorns on their stems or leaves. what is the most likely explanation for the evolution of thorns? (1 point) thorns help plants produce more food from photosynthesis. thorns are an adaptation that some plants have evolved in order to discourage herbivores from eating the plant. thorns help plants to conserve resources like water and soil nutrients that may be used by other organisms. thorns are an example of a mutation that arises in the genetic code of plants.

Explanation:

Thorns are a physical feature. In the context of plant - animal interactions, herbivores (animals that eat plants) can damage plants. An adaptation is a trait that enhances an organism's survival and reproduction. If a plant has thorns, it makes it less likely for herbivores to eat it. Photosynthesis is mainly related to leaves (in most plants) and the process of converting light energy into chemical energy. Thorns do not play a role in photosynthesis. Conserving water and soil nutrients is more related to root systems, waxy leaf coatings (for water conservation) etc., not thorns. While thorns may have originated from a mutation, the key is their function as an adaptation for defense against herbivores.

Answer:

Thorns are an adaptation that some plants have evolved in order to discourage herbivores from eating the plant.