Question

Which of the following represent zygomorphic symmetry?
A. Canna, Mustard, Chilly, Datura
B. Canna, Mustard, Pea, Datura
C. Pea, Bean, Cassia, Gulmohar
D. Pea, Bean, Canna, Chilly

Answer 1

Zygomorphic symmetry, additionally referred to as bilateralism happens during a flower through that it will pass just one plane of symmetry which will divide it into 2 components.

Complete step by step answer: Zygomorphic ("yoke shaped", "bilateral" – from the Greek ζυγόν, zygon, yoke, and μορφή, morphe, shape) flowers is divided by solely one plane into 2 mirror-image halves, very similar to a yoke or somebody's face. Examples are orchids and therefore the flowers of most members of the Lamiales (e.g., asterid dicot family and Gesneriaceae). Some authors like the term mono symmetry or bilateralism. The spatial property permits spore to be deposited in specific locations on pollinating insects and this specificity may end up in evolution of recent species
The genetic determinants of the organization and variation of the flower, a placing feature of the angiosperms, are solely setting out to be deciphered. Floral symmetry has recurrently evolved among angiosperms, zygomorphy (monosymmetry) being a key innovation thanks to its role within the plant-pollination interaction. As such, it represents a case study for evo-devo. Organic process comparative studies conducted in 2 eudicot clades, the Ranales and therefore the Asteridae sensu APGII, have shown that the evolution of this attribute relies upon the bailiwick context of the flower. Genetic and biological process bases of zygomorphy are investigated in many unrelated model species. all told these species, zygomorphy seems to be controlled, a minimum of partly, by cistron's happiness to the TCP gene family of transcription factors and named CYC-like genes. Exploring the molecular bases of zygomorphy in non-model species spanning the variety of angiosperms, however additionally the biological process processes concerned, are currently essential to know the evolution of floral symmetry.
The correct answer is (C) Pea, Bean, Cassia, Gulmohar.

Note: The Fabaceae or Leguminosae family, ordinarily referred to as the legume, pea, or bean family are an oversized and economically necessary family of flowering plants that contains a zygomorphic flower. Pea, bean, Cassia and Gulmohar belong to the family Fabaceae.