Question

how many different plant families make up seagrasses?
○ six
○ five
○ three
○ four

question 4
1 pts
which of the following describes non-algae plants?
○ a genus of large brown seaweed that floats in island-like masses, called beds, and is common in waters off the u.s. south atlantic coast
○ seagrasses which exist in the shallow coastal regions that are somewhat hybrid in nature because they have adapted to the high salt content of ocean water
○ a type of single-celled phytoplankton that lives ubiquitously throughout the upper strata of the ocean
○ types of marine plankton in which half of the species are photosynthetic and the rest are exclusively heterotrophic

Explanation:

First Question (How many different plant families make up seagrasses?)

Seagrasses are composed of four different plant families. So the correct option is the one with "four".

• The first option describes a type of seaweed (which is algae), so it's incorrect.
• The second option describes seagrasses. Seagrasses are non - algae plants as they are flowering plants adapted to marine environments.
• The third option describes phytoplankton (which can be algal), so it's incorrect.
• The fourth option describes marine plankton (some of which are algal), so it's incorrect.

Answer:

four (the option: four)

Question 4 (Which of the following describes non - algae plants?)