The ancestors of land plants likely evolved from

Ans.

Land plants were evolved on the Earth around 850 million years ago. The ancestors of plants are considered as plant-like single cell organisms.  These organisms include tiny protists, that were capable of performing photosynthesis as nearly all land plants perform photosynthesis. An example of photosynthetic protist is green alga.

Thus, 'the ancestors of land plants likely evolved from single-cell, photosynthetic protists, such as green algae.'

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

answer: c

explanation: