Answer the following question given this paragraph: Cnidarians such as jellyfish have radial symmetry. Flatworms and roundworms, which you will read about next, have bilateral symmetry. Q: What are jellyfish and other cnidarian's stingers called? Choices: - prokaryotes - necrocytes - phenocrysts - nematocysts A:
nematocysts
(Question)
Answer the following question given this paragraph: The majority of mammals are placental mammals. These are mammals in which the developing baby is fed through the mother's placenta. Female placental mammals develop a placenta after fertilization. A placenta is a spongy structure that passes oxygen, nutrients, and other useful substances from the mother to the fetus. It also passes carbon dioxide and other wastes from the fetus to the mother. The placenta allows the fetus to grow for a long time within the mother. Q: What structure passes oxygen and nutrients to a growing fetus in mammals? Choices: - uterus - spinal cord - vas deferens - placenta A:
(Answer)
placenta
Ques: Answer the following question given this paragraph: Many samples have a lot of variation in measurements. Variation can be described with a statistic called the range. The range is the total spread of values in a sample. It is calculated by subtracting the smallest value from the largest value. Q: What term is used to describe the total spread of values in a sample? Choices: - variety - axis - scale - range A:
Ans: range
(Q).
Answer the following question given this paragraph: A: With greater reflection off the ionosphere, AM waves can travel even farther at night than they can during the day. Radio receivers can often pick up radio broadcasts at night from cities that are hundreds of miles away. Q: Greater reflection off what atmospheric layer allows am radio waves to travel even farther at night than they can during the day? Choices: - stratosphere - exosphere - troposphere - ionosphere A:
(A).
ionosphere
Ques:Answer the following question given this paragraph: The presence of solute particles blocks some of the ability for liquid particles to evaporate. Thus, solutions of solid solutes typically have a lower vapor pressure than the pure solvent. Q: The presence of solute particles blocks some of the ability for liquid particles to do what? Choices: - melt - fuse - dissolve - evaporate A:

Ans:evaporate
Question: Answer the following question given this paragraph: Homeostasis is maintaining a constant internal environment. Q: What type of environment is maintained in homeostasis? Choices: - fluid internal - noisy internal - stable external - constant internal A:
Answer:
constant internal