The chloroplasts of modern plants are thought to have been derived according to which sequence?
A) cyanobacteria ? green algae ? green plants
B) cyanobacteria ? green algae ? fungi ? green plants
C) red algae ? brown algae ? green algae ? green plants
D) red algae ? cyanobacteria ? green plants
E) cyanobacteria ? red algae ? green algae ? green plants
Ans: A) cyanobacteria ? green algae ? green plants
You might also like to view...
All lophotrochozoa have:
A. radial symmetry and complex organs. B. bilateral symmetry and complex organs. C. radial symmetry and primitive organs.
The ____ phylum consists of vascular, seed-bearing plants, including pines, spruces, firs, hemlocks, junipers,
cypresses, and redwoods. Most of them are evergreens that form woody reproductive cones.
a. Cycadophyta b. Anthophyta c. Gnetophyta d. Coniferophyta e. Ginkgophyta
Why is external water not essential for fertilization in seed plants?
A. Ovules are contained within the pollen. B. Pollen grains are transported by wind or an animal. C. Sperm cells are used to transport pollen to the archegonia. D. The sperm cells in seed plants are capable of resisting desiccation. E. Seed plants use pollen instead of sperm for fertilization.
The process by which the major land masses have shifted their positions, changed shapes, and separated from each other, is known as
A. differential land movement. B. cotranslational sorting. C. depolarization of land masses. D. continental drift. E. cyclic land drift.