Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs?
1. sporophyte embryo
2. female gametophyte
3. egg cell
4. megaspore
A) 4 ? 2 ? 3 ? 1
B) 4 ? 1 ? 2 ? 3
C) 1 ? 4 ? 3 ? 2
D) 1 ? 4 ? 2 ? 3
A
You might also like to view...
Biofilms in the human mouth primarily contain pathogens
Indicate whether the statement is true or false.
Consider the metabolic repertoire of prokaryotes and the diverse environments in which they can thrive to answer the following questions
Autotrophs produce carbohydrates by reducing CO2 whereas heterotrophs synthesize carbohydrates by reducing preformed organic compounds like glucose. A. true B. false
Researchers find support in the __________
hypothesis to explain the mass extinction of nearly all remaining dinosaurs. a. adaptive radiation b. endosymbiosis c. K-T Asteroid hypothesis d. molecular clock e. continental drift
The post Darwinian view of the world includes which of the following idea(s)?
A. species are related by descent. B. the age of the Earth is billions of years old. C. an interaction of random variation and environmental conditions produce environmental adaptation. D. All of the choices are correct. E. Only two of the answers are correct.