English please 🙏🙏🙏

here's the answer to part (b):

b)
1. Specimen responsible for high yields of beans:

• The specimen responsible for high yields of beans is Nitrogen-fixing bacteria (e.g., Rhizobium species).

2. Specimen responsible for damage to maize plants:

• The specimen responsible for damage to maize plants is the Maize stem borer (e.g., Busseola fusca or Chilo partellus larvae).

3. Differentiation using observable features:

• Nitrogen-fixing bacteria: These are microscopic, single-celled organisms that are not visible to the naked eye. They are found within root nodules on the roots of leguminous plants like beans.
• Maize stem borer: This is a macroscopic insect larva (caterpillar) that is visible to the naked eye. It has a segmented body, chewing mouthparts, and short legs, and is typically found boring inside the stems of maize plants.

4. Adaptations for carrying out functions:

• Nitrogen-fixing bacteria (for high bean yields):

  • Adaptation 1: They possess the nitrogenase enzyme complex, which allows them to convert atmospheric nitrogen gas ($\text{N}_2$) into ammonia ($\text{NH}_3$), a form usable by plants.
  • Adaptation 2: They form a symbiotic relationship with legume roots, creating root nodules. Inside these nodules, the bacteria are provided with a protected, low-oxygen environment and carbohydrates from the plant, which are essential for the energy-intensive process of nitrogen fixation.

• Maize stem borer (for damaging maize plants):

  • Adaptation 1: The larvae have strong, well-developed chewing mouthparts (mandibles) that are adapted for boring into and feeding on the tough internal tissues of maize stems.
  • Adaptation 2: Their cylindrical, elongated body shape allows them to easily tunnel and move through the narrow passages they create within the maize stem, providing protection from predators and environmental factors while feeding.