Answer the following question given this paragraph: Colonial organisms were probably one of the first evolutionary steps towards multicellular organisms. Algae of the genus Volvox are an example of the bridge between colonial organisms and multicellular organisms. Each Volvox , shown in Figure above , is a colonial organism. It is made of up to 50,000 photosynthetic flagellate algae that are grouped together into a hollow sphere. Volvox live in a variety of freshwater habitats, and were first reported by Antonie van Leeuwenhoek in 1700. Q: Colonial organisms were probably one of the first evolutionary steps towards which type of organisms? Choices: - double cellular - mutated - fetus - multicellular A:
multicellular
Answer the following question given this paragraph: Plastids are membrane-bound organelles with their own DNA. Examples are chloroplasts and chromoplasts. Chloroplasts contain the green pigment chlorophyll and carry out photosynthesis . Chromoplasts make and store other pigments. They give flower petals their bright colors. Q: What are membrane-bound organelles with their own dna called? Choices: - vacuoles - chromosomes - ribosomes - plastids A:
plastids
Q: Answer the following question given this paragraph: The pointed pattern is a form of partial albinism, which results from a mutation in an enzyme that is involved in melanin production. The mutated enzyme is heat-sensitive; it fails to work at normal body temperatures. However, it is active in cooler areas of the skin. This results in dark coloration in the coolest parts of the cat's body, such as the lower limbs and the face, as shown in Figure above . The cat's face is cooled by the passage of air through the nose. Generally adult Siamese cats living in warm climates have lighter coats than those in cooler climates. Q: Partial albinism results from a mutation in an enzyme that is involved in the production of what? Choices: - cytoplasm - hair - cancer - melanin A:
A: melanin
Question: Answer the following question given this paragraph: Looking at different types of competition, ecologists developed the competitive exclusion principle . The principle states that species less suited to compete for resources will either adapt, move from the area, or die out. In order for two species within the same area to coexist, they may adapt by developing different specializations. This is known as character displacement . An example of character displacement is when different birds adapt to eating different types of food. They can develop different types of bills, like Darwin's Finches ( Figure below ). Therefore, competition for resources within and between species plays an important role in evolution through natural selection . Q: What is the concept by which two species within the same area to coexist by adapting by developing different specializations? Choices: - character development - feature displacement - character concept - character displacement A:
Answer: character displacement
*Question*
Answer the following question given this paragraph: Although California is prone to many natural hazards, including volcanic eruptions at Mt. Shasta or Mt. Lassen, and landslides on coastal cliffs, the natural hazard the state is linked with is earthquakes. In this video, the boundaries between three different tectonic plates and the earthquakes that result from their interactions are explored. Q: What natural disaster is california most linked with? Choices: - fires - volcanoes - hurricanes - earthquakes A:
**Answer**
earthquakes
(Q).
Answer the following question given this paragraph: Covalent compounds form individual molecules rather than crystals. Compared with ionic compounds, they have low melting and boiling points. They are also poor conductors of electricity. In polar covalent compounds, oppositely charged ends of different molecules attract each other. This affects the properties of polar compounds. Q: Covalent compounds form individual molecules rather than what? Choices: - carbon - chemicals - atoms - crystals A:
(A).
crystals