The Hydrostatic Skeleton of the Earthworm Allows It to Move

question 63

Multiple Choice

The hydrostatic skeleton of the earthworm allows it to move around in its environment by

• A) walking on its limbs.
• B) crawling with its feet.
• C) swimming with its setae.
• D) using peristaltic contractions of its circular and longitudinal muscles.
• E) alternating contractions and relaxations of its flagellae.

---

Definitions:

Emerging Economies

Countries with developing industrial bases, experiencing rapid economic growth and increasing involvement in the global market.

NICs

Stands for Newly Industrialized Countries, which are nations experiencing rapid economic growth and industrialization.

LDCs

Least Developed Countries (LDCs) are low-income countries confronting severe structural impediments to sustainable development, often characterized by weak socioeconomic indicators.

Population Growth

The increase in the number of individuals in a population over time, due to factors like birth rates exceeding death rates or immigration.