Ques:Q: In sexual reproduction, two of what unite to produce an offspring? Read this paragraph and choose the correct option from the provided answers: In sexual reproduction, two gametes unite to produce an offspring. Which two gametes is a matter of chance. The union of gametes occurs randomly. Choices: - DNA strands - spores - chromosomes - gametes A:

Ans:gametes
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Ques:Q: What shape is each face of a tetrahedron? Read this paragraph and choose the correct option from the provided answers: In order to maximize their distance from one another, the four groups of bonding electrons do not lie in the same plane. Instead, each of the hydrogen atoms lies at the corners of a geometrical shape called a tetrahedron. The carbon atom is at the center of the tetrahedron. Each face of a tetrahedron is an equilateral triangle. Choices: - asymmetric triangle - oval - trapezoid - equilateral triangle A:

Ans:equilateral triangle
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Ques:Q: Earthworms and segmented worms belong to what phylum? Read this paragraph and choose the correct option from the provided answers: The phylum Annelida is made up of segmented worms such as earthworms . Segmented worms are divided into many repeating segments. There are roughly 15,000 species of annelids. Most belong to one of three classes. A species in each class is pictured in Figure below . See The Cambrian Explosion at http://www. pbs. org/kcet/shapeoflife/episodes/explosion. html for an introduction to annelids. Choices: - bryozoa - nematoda - protazoa - annelida A:

Ans:annelida
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Ques:Q: What unit are atomic radii typically measured in? Read this paragraph and choose the correct option from the provided answers: Atomic radii have been measured for elements. The units for atomic radii are picometers, equal to 10 -12 meters. As an example, the internuclear distance between the two hydrogen atoms in an H 2 molecule is measured to be 74 pm. Therefore, the atomic radius of a hydrogen atom is . Choices: - sporozoans - radons - powers - picometers A:

Ans:
picometers
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