NEET-UG Biology

Describing a plant in floral formula and diagram — practice questions

7 questions in the bank on this idea. Below are 7 of them, exactly as they appear in a test.

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Question 1 · difficulty L1 · recall
In a floral formula, which symbol is used to indicate a zygomorphic flower?
- A. ⊕
- B. %
- C. ⚥
- D. K
Question 2 · difficulty L2 · understanding
A floral formula shows G(2) with a line drawn above G. What does the line above the gynoecium symbol indicate?
- A. Inferior ovary
- B. Superior ovary
- C. Apocarpous gynoecium
- D. Unisexual flower
Question 3 · difficulty L2 · understanding
In a floral formula, K(5) most directly conveys which information?
- A. Five free sepals
- B. Five fused sepals
- C. Five petals
- D. Five stamens
Question 4 · difficulty L3 · application
A flower is bisexual, actinomorphic, pentamerous and has fused petals. Which set of floral-formula features would be consistent with this description?
- A. ⚥, ⊕ and C(5)
- B. ♂, %, C5
- C. ♀, ⊕, A5
- D. ⚥, %, K(5) only
Question 5 · difficulty L3 · application
A floral diagram shows five stamens attached to the petals rather than directly to the receptacle. Which relationship is being represented?
- A. Epipetalous stamens
- B. Epiphyllous stamens
- C. Polyandrous stamens
- D. Didynamous stamens
Question 6 · difficulty L4 · analysis
A floral description reads: actinomorphic, bisexual, calyx of five fused sepals, corolla of five fused petals, five stamens and a bicarpellary syncarpous superior ovary. Which feature would be represented by G(2) with the appropriate superior-ovary mark?
- A. Two fused carpels
- B. Two free carpels
- C. Two stamens
- D. Two fused petals
Question 7 · difficulty L5 · analysis
Two flowers have the same number of sepals, petals and stamens. Flower P is zygomorphic with a monocarpellary superior ovary, while flower Q is actinomorphic with a tricarpellary syncarpous superior ovary. Which pair of features must differ in their floral formulas?
- A. Symmetry symbol and gynoecium notation
- B. Calyx symbol and stamen number only
- C. Sexuality symbol and ovary position only
- D. Petal number and sepal fusion only

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