The term metabolism is best defined as .
A. the number of calories it takes to keep from shivering on a cold day
B. biochemical reactions involved in building cell molecules or breaking down molecules for energy
C. the length of time it takes to digest and absorb fats
D. a measure of carbohydrate utilization, typically involving measurement of calories 1

what's the rest of the question

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

b a mature ovary of a plant.