X Gibberellins X X (2 points) (2 pts) the relationship between different types of plant hormones and their functions (0 pts) the completed plant tissues and the cells that initiate their growth (0 pts) the differences between plant structures and the hormones they produce (0 pts) the types of plant cells and their functions within the plant 2 /2 points 17. Which of the following best describes the male and female reproductive structures of an angiosperm? (2 points) (2 pts) Angiosperms produce flowers, inside which the male stamens hold the pollen and the female pistil holds the ovule. 0 pts) Angiosperms produce male and female cones, and the pollen from a male cone fertilizes the egg inside a female cone. (0 pts) Angiosperms produce male and female gametophytes, and the male gametophyte produces spores that fertilize eggs inside the female gametophyte. (0 pts) Angiosperms produce sporangia, which release spores that develop into male flowers containing pollen and female flowers containing ovules. 0 /2 points 18. The sporophyte of an unknown plant species grows as a separate plant than the gametophyte.
The plant produces both female and flagellated male gametes from the same gametophyte, and it releases spores into the environment. Which of the following is the best conclusion about the life cycle of this plant? (2 points) (2 pts) The plant is a fern, and sporophyte is its dominant phase. (0 pts) The plant is a gymnosperm, and the gametophyte is its dominant phase. (0 pts) The plant is a moss, and the sporophyte is its dominant phase. (0 pts) The plant is an angiosperm, and the gametophyte is its dominant phase. 0 /2 points 19. Which of the following organisms is an acoelomate? 2 points) (0 pts) clam (0 pts) earthworm (2 pts) flatworm (0 pts) insect 0 /2 points 20. Which of the following best describes a feature that distinguishes animals from fungi? (2 points) (0 pts) Animals are heterotrophs, while most fungi are chemoautotrophs. (2 pts) Animals digest their food inside their bodies, while fungi break down their food externally. (0 pts) Animals have cell walls containing cellulose and proteins, while fungi have cell walls containing chitin. (0 pts) Animals reproduce sexually or asexually, while fungi reproduce by binary fission or budding. /2 points 21. Which of the following best explains ways in which fish and mammals differ? (2 points) (2 pts) Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring. (0 pts) Fish are endothermic and have gills, while mammals are ectothermic and have lungs. (0 pts) Fish are invertebrates and have scales and paired fins, while mammals are vertebrates and have fur or hair. (0 pts) Fish have streamlined bodies and three-chambered hearts, while mammals are bipedal and have four-chambered hearts. 2 /2 points