The euryarchaeota includes all a. known thermophilic extreme acidophiles. b. the bacteria. c. known methanogens. d. green sulfur bacteria.

C. known methanogens

Explanation:

Euryarchaeota is one of the phyla included in the kingdom of Archaea. The phylum Euryarchaeota is a large phylum of archaeans and includes halophiles, all methanogens and some of the extreme thermophiles.

The archaeans that produce methane gas as a by-product of metabolism are known as methanogens. They are strictly anaerobic and can not survive in the presence of oxygen. Methanogens use hydrogen gas or acetate as an electron donor during the process of ATP formation and form methane gas.  

An example includes Methanococcus jannaschii that is found near hydrothermal vents in the water heated to 85°C (185°F).

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.