Answer the following question given this paragraph: Echinoderms lack respiratory and excretory systems. Instead, the thin walls of their tube feet allow oxygen to diffuse in and wastes to diffuse out. Echinoderms also lack a centralized nervous system. They have an open circulatory system and lack a heart. On the other hand, echinoderms have a well-developed coelom and a complete digestive system. Echinoderms use pheromones to communicate with each other. They detect the chemicals with sensory cells on their body surface. Some echinoderms also have simple eyes ( ocelli ) that can sense light. Like annelids, echinoderms have the ability to regenerate a missing body part. Q: Echinoderms lack what type of system that in humans consists of the brain and spinal cord? Choices: - autonomic system - endocrine system - peripheral nervous system - centralized nervous system A:
centralized nervous system
Answer the following question given this paragraph: Through asexual reproduction , new organisms are produced that are genetically identical to the parent. That is, they have exactly the same DNA. Fungi reproduce asexually through three methods:. Q: What type of reproduction do fungi engage in? Choices: - sexual - ephemeral - microscopic - asexual A:
asexual
Q: Answer the following question given this paragraph: The muscles of the anterior compartment of the thigh flex the thigh and extend the leg. This compartment contains the quadriceps femoris group, which actually comprises four muscles that extend and stabilize the knee. The rectus femoris is on the anterior aspect of the thigh, the vastus lateralis is on the lateral aspect of the thigh, the vastus medialis is on the medial aspect of the thigh, and the vastus intermedius is between the vastus lateralis and vastus medialis and deep to the rectus femoris. The tendon common to all four is the quadriceps tendon (patellar tendon), which inserts into the patella and continues below it as the patellar ligament. The patellar ligament attaches to the tibial tuberosity. In addition to the quadriceps femoris, the sartorius is a band-like muscle that extends from the anterior superior iliac spine to the medial side. Q: Which muscle is a band-like muscle that extends from the anterior superior iliac spine to the medial side? Choices: - vastus medialis - tibialis anterior - soleus - sartorius A:
A: sartorius
Question: Answer the following question given this paragraph: Homologous structures are structures that have a common function and suggest common ancestry. For example, homologous structures include the limbs of mammals, such as bats, lions, whales, and humans, which all have a common ancestor. Different mammals may use their limbs for walking, running, swimming or flying. The method the mammal uses to move is considered a common function. Q: What are structures that have a common function and suggest common ancestry? Choices: - reversible structures - analogous structures - monogamous structures - homologous structures A:
Answer: homologous structures
*Question*
Answer the following question given this paragraph: Atmospheric pressure is low in the eye of a hurricane. In a 1979 hurricane in the Pacific Ocean, a pressure of 0.859 atm was reported inside the eye. What is this pressure in torr?. Q: Atmospheric pressure is low in what anatomically named part of a hurricane? Choices: - leg - mouth - nose - eye A:
**Answer**
eye
Answer the following question given this paragraph: The Volvox sphere has a distinct front and back end. The colony of cells can swim in a coordinated fashion. The cells have eyespots, which are more developed in the cells near the front. This enables the colony to swim towards light. Q: What has a distinct front and back end? Choices: - hydro sphere - heroclix sphere - imipenem sphere - volvox sphere A:
volvox sphere