Question

Match List - I with List - II.

List - I (Parasite Type)	List - II (Example)
A. Total root parasite B. Partial root parasite C. Total stem parasite D. Partial stem parasite	I. Loranthus longiflorus II. Cuscuta chinensis III. Striga lutia IV. Orabanche cernua

• A. A-I, B-II, C-IV, D-III
• B. A-IV, B-II, C-I, D-III
• C. A-III, B-IV, C-I, D-II
• D. A-IV, B-III, C-II, D-I

Hint:

Use the "CLOSE" mnemonic for parasitic weeds: Cuscuta (Total Stem), Loranthus (Partial Stem), Orobanche (Total Root), Striga (Partial Root).

Answer 1

The Correct Option is D

Concept: Parasitic weeds are plants that derive some or all of their nutrients from another living plant (host). They are classified based on where they attach (stem or root) and whether they are completely dependent (total/holoparasite) or partially dependent (partial/hemiparasite).

Step 1: Match Root Parasites (A and B).
1. Total root parasite (A): *Orobanche* (Broomrape) lacks chlorophyll and depends entirely on the host root. Thus, A matches with IV (*Orabanche cernua*).
2. Partial root parasite (B): *Striga* (Witchweed) has green leaves and can photosynthesize but relies on the host for water and minerals. Thus, B matches with III (*Striga lutia*).

Step 2: Match Stem Parasites (C and D).
1. Total stem parasite (C): *Cuscuta* (Dodder) is a leafless, yellow vine that wraps around the host stem. Thus, C matches with II (*Cuscuta chinensis*).
2. Partial stem parasite (D): *Loranthus* (Mistletoe) grows on the branches of trees (like mango) and has green leaves. Thus, D matches with I (*Loranthus longiflorus*).

Step 3: Final Matching Sequence.
The sequence is A-IV, B-III, C-II, D-I, which matches Option (4).