Which statement best describes the life cycle of plants such as ferns? a. different plants have a different number of phases in their life cycle. b. plants have a single life cycle and are entirely haploid. c. plants have a single life cycle and are entirely diploid. d. plants have a two-part life cycle, spending part of their life in a diploid phase and part in a haploid phase.

Ferns have a characteristic and stable cycle, it is digenetic Diplo-haplophasic.

The right answer here is D- Plants have a two-part life cycle, spending part of their lives in a diploid phase and part in a haploid phase.

- A is false because they all have a stable cycle.
- B and C false because they don't have a monogenetic cycle.

a molecule, containing a very large number of atoms, such as, protein, nucleic acid, or synthetic polyme.

Explanation:

A macromolecule is a very large molecule, such as protein, mostly commonly composed of the polymerization of smaller subunits, called monomers. They are typically composed of thousands of atoms, or more. A substance that is composed of monomers is called a polymer.

Easier version to understand: Macromolecules are large, complex molecules.

I hope this helps you ^^