Correct Option
The correct option is
A-2, B-3, C-1, D-4
Explanation
Angiosperms (flowering plants) consist of vegetative parts (roots, stems, leaves) and reproductive parts (flowers). A typical flower possesses four whorls: calyx (sepals), corolla (petals), androecium (stamens), and gynoecium (pistils/carpels). Understanding the morphology of these structures is essential for plant classification.
Detailed Analysis
- A. Anther and Filament (Matches 2. Stamen): The stamen is the male reproductive unit of a flower. It consists of two main parts: the filament (a long, slender stalk) and the anther (a bilobed structure at the tip where pollen grains are produced).
- B. Stigma, Style, Ovary (Matches 3. Pistil): The pistil (or carpel) is the female reproductive unit of a flower. It comprises three parts:
- Stigma: The sticky tip that receives pollen.
- Style: The elongated tube connecting the stigma to the ovary.
- Ovary: The swollen basal part containing ovules.
- C. Petiole and Lamina (Matches 1. Leaf): A typical leaf consists of a leaf base, a petiole (the stalk that attaches the leaf to the stem), and the lamina (the green, expanded leaf blade where photosynthesis occurs).
- D. Taproot and Lateral roots (Matches 4. Root): The root system anchors the plant and absorbs water. In dicots, the primary root grows directly from the radicle to form the taproot, which bears secondary and tertiary branches known as lateral roots.
Conclusion:
- A matches with 2 (Stamen).
- B matches with 3 (Pistil).
- C matches with 1 (Leaf).
- D matches with 4 (Root).
Key Takeaway: The Stamen (male) consists of the anther and filament, while the Pistil (female) consists of the stigma, style, and ovary. The Petiole and Lamina are structural components of a leaf.