Question:medium

Consider the following four statements (i), (ii), (iii) and (iv) and select the right option for two correct statements. Statements : (i) In vexillary aestivation, the large posterior petal is called-standard, two lateral ones are wings and two small anterior petals are termed keel (ii) The floral formula for liliaceae is $\bigoplus ⚥ P_{3 + 3} \, A_{3+3} + \underline{G}_3$ (iii) In pea flower the stamens are monadelphous (iv) The floral formula for solanaceae is $\bigoplus ⚥ K_{(3)} C_{(3)} A_{(4)} + \underline{G}_2$ The correct statements are

Updated On: Jun 15, 2026
  • (i) and (iii)
  • (i) and (ii)
  • (ii) and (iii)
  • (iii) and (iv)
Show Solution

The Correct Option is B

Solution and Explanation

To solve the question, let's analyze each statement one by one:

  1. Statement (i): "In vexillary aestivation, the large posterior petal is called-standard, two lateral ones are wings and two small anterior petals are termed keel."
    • This statement is accurate as it describes the typical floral arrangement found in the family Fabaceae (Leguminosae), where the largest petal is the standard (or banner), the lateral ones are called wings, and the two fused lower petals form the keel.
    • Therefore, Statement (i) is correct.
  2. Statement (ii): "The floral formula for liliaceae is \bigoplus ⚥ P_{3 + 3} \, A_{3+3} + \underline{G}_3"
    • The Liliaceae family is characterized by flowers that typically have a perianth of two whorls of three tepals each, six stamens in two whorls, and a tri-carpellary ovary that is superior.
    • The proposed floral formula matches the typical floral arrangement of Liliaceae, hence Statement (ii) is correct.
  3. Statement (iii): "In pea flower the stamens are monadelphous."
    • In pea flowers, the stamens are actually diadelphous, meaning they are arranged in two bundles: nine fused stamens and one free. Thus, this statement is incorrect.
  4. Statement (iv): "The floral formula for solanaceae is \bigoplus ⚥ K_{(3)} C_{(3)} A_{(4)} + \underline{G}_2"
    • The floral formula for Solanaceae typically has 5 sepals, 5 petals, 5 stamens, and a bicarpellary gynoecium (K₅C₅A₅+̲G₂).
    • The statement contains a floral formula that does not match the typical characteristics of Solanaceae, hence it is incorrect.

Based on the analysis above, the correct statements are (i) and (ii).

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