In racemose inflorescence, ____.

Core Logic

• Marginal placentation is found in Pea (A-II).
• Axile placentation is found in China rose, Tomato, and Lemon (B-IV).
• Parietal placentation is found in Mustard and Argemone (C-I).
• Basal placentation is found in Sunflower and Marigold (D-III).

Step 1: Final Conclusion

The correct matches are A-II, B-IV, C-I, D-III.

Pattern Recognition

Pea = Marginal is the most recognizable trait (A-II). Lemon = Axile (B-IV). This instantly points to the correct option.

Chapter Mix

Class 11 Biology: Morphology of Flowering Plants

Core Logic

The Solanaceae family (potato family) is characterized by:

• Actinomorphic, bisexual flowers.
• Calyx (K): 5 sepals, united (gamosepalous) → K(5)$K_{(5)}$
• Corolla (C): 5 petals, united (gamopetalous) → C(5)$C_{(5)}$
• Androecium (A): 5 stamens, epipetalous → A₅$A_5$ (with an arc connecting C and A).
• Gynoecium (G): Bicarpellary, syncarpous, superior ovary → G(2)$\underline{G}_{(2)}$

Note: The official option (1) in the exam paper accidentally omitted the actinomorphic symbol $\oplus$, but perfectly represents the united calyx, united corolla, and syncarpous ovary of Solanaceae which distinguishing it from the other choices.

Step 1: Final Conclusion

The formula ♀ K(5) C(5) A₅ G(2)$\text{♀} \ K_{(5)} \ C_{(5)} \ A_{5} \ G_{(2)}$ correctly shows the united sepals and petals typical of Solanaceae.

Pattern Recognition

Solanaceae is famous for "(5)" across both calyx and corolla (gamosepalous & gamopetalous) and a bicarpellary syncarpous ovary "(2)".

Chapter Mix

Class 11 Biology: Morphology of Flowering Plants