Question

Which of the following is the total stem parasite on onion?​

Answer 1

Answer:

The Total Stem parasite on onion is Cuscuta that grows on a number of plants like Duranta, Zizypus, Citrus etc. It is popularly known as dodder plant

Is it true

Answer 2

Answer:

Cuscuta sp is the total stem parasite on onion.

Explanation:

Cuscuta is also called the Dodder plant. Dodder plant is total parasite that sends its roots into the xylem and phloem of the host plant. These will absorb roots totally then block the xylem and phloem of the plant and prevent the ascent of sap as well as food being circulated through the plant body. So, the onion plant dies within days. This dodder plant also dies as they are unable to absorb nutrients from the soil.