Scientists believe green algae to be the ancestors of land plants. The classification division separating algae from the kingdom Plantae began with fossil evidence. To be successful land plants require certain modifications. This early Devonian land plant had both vascular tissue and, as seen here,

The question is incomplete as it does not have the options which are:

A) roots. B) spores. C) seed pods. D) chlorophyll.

A) roots

Explanation:

The vascular plants are evolved from the Bryophytes which are evolved from the algae.

The algae are non-vascular plants and Bryophytes too. The vascular plants developed the vascular tissue to transport the absorbed water and nutrients from the terrestrial surface.

The plants living during the Devonian period possessed the vascular tissue to transport the nutrients but to absorb the nutrients and water, they also possessed the roots.

Thus, Option-A is 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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i believe the answer would be b. hope it : )