Answer the following question given this paragraph: Q: Sister chromatids separate as part of anaphase in what process? Choices: - osmosis - vesicles - angiogenesis - mitosis A:
mitosis
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Answer the following question given this paragraph: Vascular Plants The vascular plants are the dominant and most conspicuous group of land plants. There are about 275,000 species of vascular plants, which represent more than 90 percent of Earth's vegetation. Several evolutionary innovations explain their success and their spread to so many habitats. Vascular Tissue: Xylem and Phloem The first fossils that show the presence of vascular tissue are dated to the Silurian period, about 430 million years ago. The simplest arrangement of conductive cells shows a pattern of xylem at the center surrounded by phloem. Xylem is the tissue responsible for long-distance transport of water and minerals, the transfer of water-soluble growth factors from the organs of synthesis to the target organs, and storage of water and nutrients. A second type of vascular tissue is phloem, which transports sugars, proteins, and other solutes through the plant. Phloem cells are divided into sieve elements, or conducting cells, and supportive tissue. Together, xylem and phloem tissues form the vascular system of plants. Q: What type of plant is the dominant group of land plants? Choices: - grass plants - oxygen plants - thermal plants - vascular plants A:
vascular plants
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Answer the following question given this paragraph: Alpha decay occurs when an unstable nucleus emits an alpha particle and energy. The diagram in Figure below represents alpha decay. An alpha particle contains two protons and two neutrons, giving it a charge of +2. A helium nucleus has two protons and two neutrons, so an alpha particle is represented in nuclear equations by the symbol . The superscript 4 is the mass number (2 protons + 2 neutrons). The subscript 2 is the charge of the particle as well as the number of protons. Q: What occurs when an unstable nucleus emits an alpha particle and energy? Choices: - radar decay - nucleus decay - alpha radition - alpha decay A:
alpha decay
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Answer the following question given this paragraph: As plant cells grow, they also become specialized into different cell types. Once cells become specialized, they can no longer divide. So how do plants grow after that? The key to continued growth is meristem. Meristem is a type of plant tissue consisting of undifferentiated cells that can continue to divide. Q: Once a plant cell becomes specialized, what can they no longer do? Choices: - photosynthesis - cellular respiration - osmosis - divide A:
divide
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