Question:
Match List-I with List-II
List-I (Flower Crop) List-II (Basic Chromosome No.) (A) Carnation (I) \(X = 9\) (B) Chrysanthemum (II) \(X = 15\) (C) Tuberose (III) \(X = 19\) (D) Dendrobium (IV) \(X = 30\)
Choose the correct answer from the options given below.
Match List-I with List-II
| List-I (Flower Crop) | List-II (Basic Chromosome No.) |
|---|---|
| (A) Carnation | (I) \(X = 9\) |
| (B) Chrysanthemum | (II) \(X = 15\) |
| (C) Tuberose | (III) \(X = 19\) |
| (D) Dendrobium | (IV) \(X = 30\) |
Choose the correct answer from the options given below.
Show Hint
To remember orchid cytogenetics: Dendrobium has a basic chromosome number of $x = 19$, which is a very common basic number among tropical orchid genera.
Updated On: Jul 10, 2026
- (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
- (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
- (A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Show Solution
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
The basic chromosome number ($x$) represents the fundamental haploid set of chromosomes in a plant genus. Knowing these numbers is important for cytogenetic studies and ploidy manipulation in floriculture.
Step 2: Detailed Explanation:
Let us match the flower crops with their basic chromosome numbers:
- (A) Carnation (Dianthus caryophyllus): Somatic chromosome number is $2n = 30$, meaning the basic chromosome number is $x = 15$. $\rightarrow$ (II)
- (B) Chrysanthemum (Chrysanthemum spp.): Standard species show a basic chromosome number of $x = 9$, with common cultivated forms being hexaploids ($2n = 6x = 54$). $\rightarrow$ (I)
- (C) Tuberose (Polianthes tuberosa): Has a somatic chromosome number of $2n = 60$, corresponding to a basic chromosome number of $x = 30$. $\rightarrow$ (IV)
- (D) Dendrobium orchid: Typically displays a basic chromosome number of $x = 19$, with diploid species having $2n = 38$. $\rightarrow$ (III)
The correct matching sequence is (A)-(II), (B)-(I), (C)-(IV), (D)-(III).
Step 3: Final Answer:
The correct combination corresponds to Option (B).
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