JKSSB Written 2022
Answer & Explanation
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Correct Answer:
Option B —
Parasitic
A parasitic plant is one that derives some or all of its nutritional requirements from another living plant. It uses specialized organs called haustoria to penetrate the host's tissues—either the xylem (for water) or the phloem (for food).Why the others are different
The classification of plants based on their mode of nutrition is a common topic in biology. Here is how the other options function:
A) Saprophytic: These organisms (mostly fungi and some bacteria) feed on dead and decaying organic matter. They do not harm living hosts because they function as decomposers.
C) Symbiotic: This is a "win-win" relationship. Both the host and the guest benefit from each other. A classic example is Lichen (a partnership between algae and fungi) or Rhizobium bacteria in root nodules of leguminous plants.
D) Autotrophic: These are "self-feeders." They produce their own food through photosynthesis using sunlight, water, and carbon dioxide. Most green plants fall into this category.
Common Examples of Parasitic Plants
Parasitic plants are often categorized by how much they depend on the host:
Total Parasites (Holoparasites): They lack chlorophyll and cannot photosynthesize at all. They are completely dependent on the host for food and water.
Example: Cuscuta (Dodder or Amarbel).
Partial Parasites (Hemiparasites): They have green leaves and can photosynthesize, but they rely on the host for water and mineral nutrients.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.