Ques: Q: What are the most abundant unicellular algae in the oceans? Read this paragraph and choose the correct option from the provided answers: 22.11.4 Chryosophytes Chryosophytes are the most abundant unicellular algae in the oceans. They are also one of the biggest components of plankton, a free-floating collection of microorganisms, eggs, and larvae. As photosynthetic organisms, they produce a significant amount of atmospheric oxygen. The reproduction cycle of chryosophytes is particularly interesting. Note that diatoms reproduce both asexually and sexually. Since diatoms have a rigid cell wall with an outer layer of silica (found in sand and glass), the daughter cells produced by mitosis must fit inside the original cell wall. Therefore, each generation of diatoms is smaller than the one before. The reduction in size continues until the diatoms produce sexually, producing a zygote which eventually grows to the original size as it matures. Choices: - chlorella - sporozoans - staurikosaurus - chryosophytes A:
Ans: chryosophytes

Ques: Q: Monotremes, marsupials, and placental mammals are subclasses of what? Read this paragraph and choose the correct option from the provided answers: Monotremes, marsupials, and placental mammals are subclasses of mammals. Almost all living mammals are placental mammals, which are divided into many orders. Choices: - amphibians - reptiles - birds - mammals A:
Ans: mammals

Ques: Q: Developing cars that run on hydrogen gas can help solve our dependence on what? Read this paragraph and choose the correct option from the provided answers: You won't see this car on the road, at least not yet. It's a concept car that was developed by a major automaker. Instead of burning gasoline, it runs on hydrogen gas. Using hydrogen for fuel doesn't produce pollution, and it doesn't depend on nonrenewable fossil fuels. New technologies like this car may one day help solve our energy resource problems. But even without new technologies such as this, there are many ways we can help solve the problems right now. Choices: - oxygen - food - water - nonrenewable fossil fuels A:
Ans: nonrenewable fossil fuels

Ques: Q: How many types of glands does the dermis contain? Read this paragraph and choose the correct option from the provided answers: The dermis also contains hair follicles and two types of glands. You can see some of these structures in Figure below . Choices: - three - ten - six - two A:
Ans:
two