Q: Alternation of generations is characteristic of the life cycle of all what? Choices: - cells - animals - organs - plants A:
plants

Q: Organs that produce eggs and secrete estrogen are part of what system? Choices: - circulatory system - digestive system - male reproductive system - female reproductive system A:
female reproductive system

Q: Q: The three layers of protective coverings of the spinal cord is called what? Choices: - dermis - tendons - muscles - meninges A:
A: meninges

Question: Q: What types of living beings have water vascular systems and unique tube feet? Choices: - diatoms - mollusks - Ducks - echinoderms A:
Answer: echinoderms

*Question*
Q: Which is the dominant stage of the lifecycle of a fern? Choices: - gametophyte - larvae - zygote - sporophyte A:
**Answer**
sporophyte

(Question)
Q: Eukaryotic cell division involves mitosis and what? Choices: - meiosis - electrolysis - spermatogenesis - cytokinesis A:
(Answer)
cytokinesis