Nonvascular plants don't have seeds. They reproduce sexually and asexually. Vascular plants have tubes that carry water up the plant and nonvascular don't have that
23 individual chromosomes, 46 total. Cannot be more
Vance is demonstrating conceptual knowledge
Conceptual knowledge is the clear and detailed understanding of principles, concepts, models or theories and the understanding of the linking relationships between them. Conceptual knowledge is acquired by thoughtful, reflective learning, listening, reading, or viewing. From the question, Vance is demonstrating conceptual knowledge because he has the explicit understanding of why rainfall amounts affect different types of vegetation positively and others negatively.
Mitosis is the term i believe you're looking for
Carbohydrates give energy to the body.
Hope this helps!!