17. a botanist discovers a new species of plant in a tropical rain forest. after observing its anatomy and life cycle, he notes the following characteristics: flagellated sperm, xylem, separate gametophyte and sporophyte generations with the sporophyte dominant, and no seeds. this plant is probably most closely related to

The correct answer will be- Pteridophytes

Explanation:

The plant kingdom is divided into many divisions which are distinguished on the basis of unique characteristics present in them. The main plant groups are Thallophytes, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms.

The plant group which is characterised by having dominant sporophyte, no seeds, presence of xylem and the flagellated sperms is known as the Pteridophytes.

The pteridophytes are the vascular plants with no seed production and contain flagellated sperm which help the sperm to swim to reach the female reproductive structure.

Thus, pteridophytes are the correct answer.

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

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