Answer the following question given this paragraph: Q: What type of cells are arranged into tightly packed sheaths around the veins of the leaf? Choices: - pattern - sheath cells - cellulose - cell walls - bundle-sheath cells A:
bundle-sheath cells
Answer the following question given this paragraph: The placenta allows nutrients and wastes to be exchanged between the mother and fetus. The fetus is connected to the placenta through the umbilical cord. Q: What connects the fetus to the placenta? Choices: - womb - fallopian tube - amniotic sac - umbilical cord A:
umbilical cord
Q: Answer the following question given this paragraph: 9.5 Simple Machines Simple machines are devices that can be used to multiply or augment a force that we apply often at the expense of a distance through which we apply the force. The word for "machine" comes from the Greek word meaning "to help make things easier. " Levers, gears, pulleys, wedges, and screws are some examples of machines. Energy is still conserved for these devices because a machine cannot do more work than the energy put into it. However, machines can reduce the input force that is needed to perform the job. The ratio of output to input force magnitudes for any simple machine is called its mechanical advantage (MA). Q: What is the greek word meaning "to help make things easier"? Choices: - toy - battery - mode - machine A:
A: machine
Question: Answer the following question given this paragraph: One way early land invertebrates solved these problems was with an exoskeleton. This is a non-bony skeleton that forms on the outside of the body. It supports the body and helps it retain water. As the organism grows, it sheds its old exoskeleton and grows a new one. Figure below shows the discarded exoskeleton of a dragonfly. Q: A non-bony skeleton that forms outside of the body is known as a what? Choices: - excitoskeleton - exoplate - endoskeleton - exoskeleton A:
Answer: exoskeleton
*Question*
Answer the following question given this paragraph: Mollusks are divided into ten living classes, including the familiar gastropods, cephalopods, and bivalves. Q: Gastropods, cephalopods, and bivalves are examples of what class? Choices: - animals - invertebrates - cetaceans - mollusks A:
**Answer**
mollusks
Answer the following question given this paragraph: A thermometer is a device used to measure temperature. It is placed in contact with an object and allowed to reach thermal equilibrium with the object (they will have the same temperature). The operation of a thermometer is based on some property, such as volume, that varies with temperature. The most common thermometers contain liquid mercury, or some other liquid, inside a sealed glass tube. The liquid expands and contracts faster than the glass tube. Therefore, when the temperature of the thermometer increases, the liquid volume expands faster than the glass volume, allowing the liquid to rise in the tube. The positions of the liquid in the tube can then be calibrated for accurate temperature readings. Other properties that change with temperature can also be used to make thermometers; liquid crystal colors and electrical conductivity change with temperature, and are also relatively common thermometers. Q: What device is used to measure temperature? Choices: - compass - anemometer - barometer - thermometer A:
thermometer