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NEET BIOLOGYMedium

Consider the following four statements A, B, C & D and select the right option for two correct statements: (A) In vexillary aestivation, the large posterior petal is called standard, two lateral ones are wings and two small anterior petals are termed keel (B) The floral formula for Liliaceae is ⊕ ⚥ P(3+3) A3+3 G(3) (C) In pea flower the stamens are monadelphous (D) The floral formula for Solanaceae is ⊕ ⚥ K(3) C(3) A(4) G(2) The correct statements are:

A

A and B

B

B and C

C

C and D

D

A and C

Step-by-Step Solution

Based on the provided sources:

  • Statement (A) is correct: Vexillary (or papilionaceous) aestivation is characterized by a large posterior petal (standard), two lateral petals (wings), and two fused anterior petals (keel) .
  • Statement (B) is correct: The floral formula for the Liliaceae family correctly includes a perianth (P) in two whorls of three, six epiphyllous stamens (A), and a tricarpellary syncarpous superior ovary (G) .
  • Statement (C) is incorrect: Stamens in the pea flower are diadelphous (arranged in two bundles, typically 9+1), not monadelphous .
  • Statement (D) is incorrect: The floral formula for Solanaceae involves pentamerous whorls (K(5), C(5), A5) and a bicarpellary ovary, rather than the trimerous or tetramerous counts shown in the statement .
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