Select the mismatched paira)Collateral and open vascular - Sunflower s...
Bicollateral va scular bundles have phloem both on the outer and inner side of xylem. All the three lie on the same radius. Usually a strip of vascular cambium is present on both outer and inner sides of xylem. Bicollateral vascular bundles occur in Cucurbitaceae (e.g., Pumpkin or Cucurbita pepo, Ridge gourd or Luffa cylindrica) and some members of families Solanaceae, Convolvulaceae, etc.
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Select the mismatched paira)Collateral and open vascular - Sunflower s...
Explanation:
Bicollateral vascular bundles - Maize stem:
In maize stem, the vascular bundles are arranged in a bicollateral manner, meaning there are two separate vascular cambia present in the stem that produce xylem and phloem inwards and outwards. This arrangement is unique to maize stems and helps in the efficient transport of water, nutrients, and sugars throughout the plant.
Collateral and open vascular - Sunflower stem bundles:
Sunflower stem bundles have collateral and open vascular bundles, where the xylem and phloem are located adjacent to each other in the same vascular bundle. The structure of these bundles allows for easy exchange of substances between xylem and phloem, aiding in the growth and development of the plant.
Concentric vascular bundles - Ferns:
Ferns have concentric vascular bundles, where xylem is surrounded by phloem in a circular arrangement. This type of vascular bundle arrangement is characteristic of ferns and helps in the efficient transport of water, minerals, and organic compounds throughout the plant.
Radial vascular bundles - Maize root:
In maize roots, the vascular bundles are arranged in a radial manner, with xylem and phloem alternating around the central core. This radial arrangement allows for efficient nutrient and water uptake from the soil and transport throughout the root system.
Therefore, the mismatched pair in the given options is "Bicollateral vascular bundles - Maize stem" as maize stems indeed have bicollateral vascular bundles.
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