Ques:Answer the following question given this paragraph: The male gametophyte produces flagellated sperm that must swim to the egg formed by the female gametophyte. For this reason, sexual reproduction must happen in the presence of water. Therefore, nonvascular plants tend to live in moist environments. Though the life of a nonvascular seedless plant is a cycle, this can be considered the initial step in the life cycle. Q: When flagellated sperm must swim to the egg, sexual reproduction requires the presence of what substance? Choices: - air - nitrogen - sunshine - water A:

Ans:water
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Ques:Answer the following question given this paragraph: It was known that DNA is composed of nucleotides , each of which contains a nitrogen-containing base, a five-carbon sugar (deoxyribose), and a phosphate group. In these nucleotides, there is one of the four possible bases: adenine (A), guanine (G), cytosine (C), or thymine (T) ( Figure below ). Adenine and guanine are purine bases, and cytosine and thymine are pyrimidine bases. Q: What does the base of a nucleotide within dna consist of? Choices: - ribosomes - protein - hydrogen - nitrogen A:

Ans:nitrogen
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Ques:Answer the following question given this paragraph: Vertebrates have an excretory system that includes a pair of kidneys. Kidneys are organs that filter wastes from blood so they can be excreted from the body. Q: What organs filter wastes from blood so they can be excreted from the body? Choices: - lungs - pancreas - liver - kidneys A:

Ans:kidneys
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Ques:Answer the following question given this paragraph: Nearly 95% of all earthquakes take place along one of the three types of plate boundaries. As you learned in the Plate Tectonics chapter, scientists use the location of earthquakes to draw plate boundaries. Q: The vast majority of what phenomena occurs along one of three types of plate boundaries? Choices: - tornados - hurricane - volcanoes - earthquake A:

Ans:
earthquake
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