Animal Biology Quiz

Common Traits of Animal Cells

• All animal cells share the ability to obtain energy from organic nutrients.
• Animal cells do not exchange materials with their surroundings, maintaining internal environments.
• Unlike some organisms, animals do not detect and respond to immediate environmental signals.

Origin of Daughter Cells in Animals

• Daughter cells originate from a single fertilized egg, which divides multiple times through the process of mitosis.

Initial State of Animals

• Animals begin life as a single fertilized egg, representing an early developmental stage before further differentiation.

Role of Homeostasis in Animal Bodies

• Homeostasis is critical for maintaining stable internal conditions, including body fluids and temperature regulation, despite external changes.

Structure and Function Relationship in Animals

• The relationship between structure and function is significant, as it dictates how various body systems operate efficiently; for instance, the form of organs like the heart contributes to its function in circulation.

Ctenophores Overview

• Ctenophores, also known as comb jellies, are marine invertebrates characterized by their distinctive features.

Function of Colloblasts in Ctenophores

• Colloblasts are specialized cells in ctenophores responsible for capturing prey using sticky secretions, aiding in their feeding strategy.

Significance of Cilia in Ctenophores

• Cilia in ctenophores play a crucial role in locomotion and feeding, allowing them to move through water and transport food to their mouths.

Gut Features in Ctenophores

• Ctenophores possess a unique digestive system with a gut that is branched, providing a larger surface area for nutrient absorption.

Arrangement of Nerve Cells in Ctenophores

• Nerve cells in ctenophores are organized in a decentralized nerve net rather than a centralized brain, enabling coordinated movements and responses.