Ques: Q: What is the process of larva becoming an adult called? Read this paragraph and choose the correct option from the provided answers: After hatching, most arthropods go through one or more larval stages before reaching adulthood. The larvae may look very different from the adults. They change into the adult form in a process called metamorphosis. During metamorphosis, the arthropod is called a pupa. It may or may not spend this stage inside a special container called a cocoon. A familiar example of arthropod metamorphosis is the transformation of a caterpillar (larva) into a butterfly (adult) (see Figure below ). Distinctive life stages and metamorphosis are highly adaptive. They allow functions to be divided among different life stages. Each life stage can evolve adaptations to suit it for its specific functions without affecting the adaptations of the other stages. Choices: - parthenogenesis - synthesis - evolution - metamorphosis A:
Ans: metamorphosis

Ques: Q: Displacement divided by time is equal to the average what? Read this paragraph and choose the correct option from the provided answers: Average velocity is displacement divided by time. Choices: - force - speed - acceleration - velocity A:
Ans: velocity

Ques: Q: By what are skeletal muscles attached to bones? Read this paragraph and choose the correct option from the provided answers: Most muscles are skeletal muscles, which are attached to bones by tendons. Skeletal muscles work in pairs to move bones back and forth at joints. Choices: - joints - ligaments - veins - tendons A:
Ans: tendons

Ques: Q: What sound can be heard when sound waves bounce back from a hard object? Read this paragraph and choose the correct option from the provided answers: Did you ever hear an echo of your own voice? An echo occurs when sound waves bounce back from a hard object. The man in Figure below is trying to create an echo by shouting toward a rock wall. When the sound waves strike the rock wall, they can't pass through. Instead, they bounce back toward the man, and he hears an echo of his voice. An echo is just one example of how waves interact with matter. Choices: - loop - eerie - boom - echo A:
Ans:
echo