Multiple Choice
What global change occurring between the Carboniferous period and the Permian period likely contributed to the success of the gymnosperms?
28. Plants
Seed Plants
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Which of the following lists of features characterizes eudicots?
A
Pollen grains with three openings, floral parts in multiples of three, netlike veins
B
One cotyledon, vascular bundles in rings, pollen grains with three openings
C
Scattered vascular bundles, netlike veins, floral parts in multiples of five
D
Leaves with parallel veins, taproot usually present, vascular bundles arranged in rings
E
Two cotyledons, netlike veins, taproot usually present
Verified step by step guidance1
Understand the key characteristics of eudicots. Eudicots, or true dicots, typically have two cotyledons, netlike veins, and a taproot system.
Review the structure of eudicot leaves. Eudicot leaves usually have a network of veins, which is referred to as netlike or reticulate venation.
Examine the root system of eudicots. Eudicots often have a taproot system, where a single main root grows deep into the soil, with smaller lateral roots branching off.
Consider the floral structure of eudicots. Eudicot flowers typically have floral parts in multiples of four or five, not three.
Identify the pollen grain structure in eudicots. Eudicot pollen grains usually have three openings, which is a distinguishing feature from monocots.
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