In some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of allows gene flow to occur between good that can be easily distinguished based on appearance.

A) hybridization; morphospecies
B) hybridization; ecological species
C) allopatric speciation; ring species
D) polyploidy; evolutionary species
E) polyploidy; ring species

A) hybridization; morphospecies

Explanation:

The biological species concept is the concept which can define a species as an individual of a large population which can interbreed and produce an offspring in a population. The concept was given by Ernst Mayr.

Morphospecies refers to the species which can be characterised by the differences in their morphological features like in the Oak, willows and the dandelions.

The biological species concept is not valid or complicated in the case of the morphospecies like in the Oak, willows and the dandelions as the individuals of these three population can exchange their genes through the process of hybridization.

Thus, Option-A is the correct answer.

i'm sorry, but can you list the answers? i cannot with something i don't know the answers to

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chris

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…