He learned that unlike flatworms, roundworms (polosnye chervi) are like tiny hoses. They have a "tube within a tube" body plan. "Think of a garden hose," he muttered, drawing a long cylinder. "They have a through-gut. Food goes in one end, waste goes out the other. Efficiency!"
To pass the test, he knew he had to identify the villains. Ascaris: The big one. Lives in the intestines. Pinworms (Ostriki): The reason you wash your hands. Hookworms: The ones that hitchhike through your skin. kak napisat test po biologii 7 klass na temu polosnye chervi
He started scrolling through the search results, realizing that passing wasn't about memorizing every Latin name—it was about understanding the "personality" of the worm. He grabbed a red marker and started a cheat sheet (for studying, not for sneaking in!). "They have a through-gut