Answer the following question given this paragraph: The next structure is the stamen , consisting of the stalk-like filament that holds up the anther , or pollen sac. The pollen, which is found at the top of the stamen, is the male gametophyte. Q: What is found at the top of the stamen? Choices: - petals - fungi - pistil - pollen A:
pollen
Answer the following question given this paragraph: An acid also produces negative ions, and a base also produces positive ions. For example, the acid hydrogen chloride (HCl), when dissolved in water, produces negative chloride ions (Cl - ) as well as hydrogen ions. The base sodium hydroxide (NaOH) produces positive sodium ions (Na + ) in addition to hydroxide ions. These other ions also combine when the acid and base react. They form sodium chloride (NaCl). This is represented by the equation:. Q: When dissolved in water, the base sodium hydroxide (naoh) produces sodium ions with what charge? Choices: - constant - similar - negative - positive A:
positive
Q: Answer the following question given this paragraph: In a marine ecosystem, algae are the producers. Through photosynthesis, they provide glucose for the ecosystem. So, can too much algae be a bad thing? Eutrophication is an over-enrichment of chemical nutrients in a body of water. Usually these nutrients are the nitrogen and phosphorous found in fertilizers. Run-off from lawns or farms can wash fertilizers into rivers or coastal waters. Q: Through this process, algae provide glucose for the ecosystem? Choices: - spermatogenesis - glycolysis - GLUCOPHAGE - photosynthesis A:
A: photosynthesis
Question: Answer the following question given this paragraph: Specialized structures for reproduction: One example is a fruiting body. Just like a fruit is involved in the reproduction of a fruiting plant, a fruiting body is involved in the reproduction of a fungus. A mushroom is a fruiting body , which is the part of the fungus that produces spores ( Figure below ). The spores are the basic reproductive units of fungi. The mycelium remains hidden until it develops one or more fruiting bodies. Q: Spores are the basic reproductive units of what organism? Choices: - mushrooms - yeast - tropical plants - fungi A:
Answer: fungi
*Question*
Answer the following question given this paragraph: Q: Lodgepole cones remain closed until exposed to what? Choices: - predators - precipitation - UV light - extreme heat A:
**Answer**
extreme heat
*Question*
Answer the following question given this paragraph: A third important type of soil is laterite . Laterite forms in tropical areas. Temperatures are warm and rain falls every day ( Figure below ). So much rain falls that chemical weathering is intense. All soluble minerals are washed from the soil. Plant nutrients get carried away. There is practically no humus. Laterite soils are often red in color from the iron oxides. If laterites are exposed to the Sun, they bake as hard as a brick. Q: What causes the red color of laterite soils? Choices: - oxygen - toxins - erosion - iron oxides A:
**Answer**
iron oxides