Question

Water milfoil is an aggressive, invasive aquatic plant in North America. Which of the following reason about the invasiveness of this species is not true?

• A. Milfoil evolved from North American plant species.
• B. Milfoil has few natural predators in a non native environment.
• C. Milfoil has few natural competitors among North American plant species.
• D. Milfoil is a hardy plant capable of succeeding in harsher environments.
• E. Milfoil is resistant to many native diseases that are adapted to native plant species.

Answer 1

The correct option is A Milfoil evolved from North American plant species.

Milfoil evolved from a non native plant species of North America and is successful invasive species there because of few natural predators and competitors in aquatic ecosystems of North America. Its success in non native environment indicates its ability to cope up in harsh environments and presence of disease resistance in it. Thus, the correct answer is option A.