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Question

Haustorial root is present in


A

Zea mays

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B

Cactus

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C

Cuscuta

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D

Monotropa

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Solution

The correct option is C

Cuscuta


The correct option is C

Explanation of the correct option:

  1. The root is an underground portion of the plant that takes water and nutrients from the soil and serves as a strong anchor for the plant.
  2. Some plants' roots change form and become changed in order to absorb and transfer water and nutrients from the soil to various sections of the plant.
  3. They are also altered to provide support, food storage, and respiration.
  4. Sucking roots, also known as Haustorial roots, are found in parasitic plants.
  5. Parasites sprout adventitious roots from the stem, sucking nourishment from the host plant's tissue.
  6. Cuscuta (dodder), Cassytha, and Dendrophthoe are other examples.

Explanation of the incorrect option:

Option A:

  1. Zea mays are complex, with embryonic and postembryonic roots.
  2. The primary root and a variable number of seminal roots comprise the embryonically produced root system.

Option B:

  1. Most cacti have a fibrous root system that spreads around the plant and does not penetrate deep into the soil.
  2. However, some species have a Taproot system, which has larger, thicker roots that penetrate the ground.

Option D:

Monotropa is a genus of three herbaceous perennial flowering plants that were previously classified in the family Monotropaceae but are now included in the Ericaceae.

Final answer: Haustorial root is present in Cuscuta.


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