How do animals have difficulty getting energy.
a. they cannot reproduce
b. there is little sunlight.
c. there is a limited supply of food.
d. there is a large supply of food.

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

How do chloroplasts set plants apart from other living things