Q: Most hydrozoa have both polyp and what forms in their life cycle? Choices: - hydra - globular - polypoid - medusa A:
medusa

(Question)
Q: Scientists did not actually see viruses until what was invented? Choices: - magnifying glass - electronic scale - telescope - electron microscope A:
(Answer)
electron microscope

Ques: Q: Microwave ovens use radiation to provide food with what kind of energy? Choices: - magnetic - vibrational - mechanical - heat A:
Ans: heat

(Q).
Q: Because dizygotic twins develop from two eggs fertilized by two sperm, they are no more identical than siblings born at what? Choices: - other times of day - different places - other eras - different times A:
(A).
different times

Ques:Q: What is the opening in the front of the eye called? Choices: - lens - cornea - iris - pupil A:

Ans:pupil

Question: Q: What part of the sperm contains the genetic material? Choices: - the " body " - the " tail " - the " brain " - the "head" A:
Answer:
the "head"