Q.18 Match List I with List II
| List I (Stomata type) | List II (Family) |
|---|---|
| A. Anomocytic B. Anisocytic C. Paracytic D. Diacytic |
I. Acanthaceae II. Magnoliaceae III. Apiaceae IV. Papaveraceae |
Choose the correct answer from the options given below:
- (A) – (I), (B) – (II), (C) – (III), (D) – (IV)
- (A) – (I), (B) – (III), (C) – (II), (D) – (IV)
- (A) – (I), (B) – (II), (C) – (IV), (D) – (III)
- (A) – (IV), (B) – (III), (C) – (II), (D) – (I)
Stomata types serve as key taxonomic characters in plant families, distinguished by subsidiary cell arrangement around guard cells. The correct matching follows standard classifications from Metcalfe and Chalk.
Correct Answer
The right option is (D) (A)-(IV), (B)-(III), (C)-(II), (D)-(I).
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A. Anomocytic → IV. Papaveraceae: Guard cells surrounded by irregular epidermal cells, no distinct subsidiary cells; typical of Papaveraceae (poppy family).
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B. Anisocytic → III. Apiaceae: Guard cells flanked by three subsidiary cells, one smaller; characteristic of Apiaceae (carrot family).
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C. Paracytic → II. Magnoliaceae: Guard cells bordered by two parallel subsidiary cells; found in Magnoliaceae (magnolia family).
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D. Diacytic → I. Acanthaceae: Guard cells with two subsidiary cells perpendicular to them, forming a cross; seen in Acanthaceae.
Why Option (D) Matches Perfectly
This aligns with dicot stomatal classifications where anomocytic lacks defined subsidiaries (Papaveraceae), anisocytic has unequal cells (Apiaceae), paracytic runs parallel (Magnoliaceae), and diacytic crosses transversely (Acanthaceae).
Option (A) Analysis
(A)-(I), (B)-(II), (C)-(III), (D)-(IV): Incorrect. Acanthaceae (I) features diacytic, not anomocytic; Magnoliaceae (II) has paracytic, not anisocytic.
Option (B) Analysis
(A)-(I), (B)-(III), (C)-(II), (D)-(IV): Wrong. Anisocytic fits Apiaceae (III), but anomocytic mismatches Acanthaceae (I); Papaveraceae (IV) lacks diacytic.
Option (C) Analysis
(A)-(I), (B)-(II), (C)-(IV), (D)-(III): Flawed. Paracytic does not occur in Papaveraceae (IV); Apiaceae (III) shows anisocytic, not diacytic.
Stomata Type Correct Family Subsidiary Cell Arrangement Anomocytic Papaveraceae (IV) Irregular, no distinct cells Anisocytic Apiaceae (III) Three cells, one smaller Paracytic Magnoliaceae (II) Two parallel cells Diacytic Acanthaceae (I) Two perpendicular cells -
