When Autopolyploid Speciation Occurs in a Plant, a Spontaneous Doubling

question 33

Multiple Choice

When autopolyploid speciation occurs in a plant, a spontaneous doubling of chromosomes during meiosis produces ____ gametes. If the plant fertilizes itself, a ____ zygote will be produced.

• A)haploid; diploid
• B)diploid; tetraploid
• C)diploid; haploid
• D)haploid; tetraploid
• E)tetraploid; diploid

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Definitions:

Root Cap

A protective tissue at the tip of a plant root that helps the root penetrate the soil.

Pericycle

A cylinder of parenchyma or sclerenchyma cells just inside the endodermis of roots, which can give rise to lateral roots, and in some cases, contribute to secondary growth.

Branch Roots

Secondary or lateral roots that originate from the primary root, increasing the root system's overall surface area for water and nutrient absorption.

Root Hairs

Thin, hair-like extensions of root epidermal cells that increase surface area for water and nutrient absorption from the soil.