Biology 2

posted by .

Were mollusks the first animals to evolve respiratory organs?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Biology

    1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both …
  2. Biology

    1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both …
  3. Biology

    1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both …
  4. biology

    i am doing a science project and needmeasurements for organs in the respiratory and excretory systems
  5. Biology

    how do animals that live in different enviroments meet their need for efficent gas exhcange?
  6. Biology 1010

    Which of following is NOT characteristics of all fish?
  7. science

    during the Devonian period,animals that could live on land began to evolve, these animals till spent part of their lives in the water. what were these animals called?
  8. science

    during the Devonian period,animals that could live on land began to evolve, these animals till spent part of their lives in the water. what were these animals called?
  9. Biology

    Describe the traits that distinguish animals from other organisms Explain the diversity of invertebrates, chordates, and primates using the theory of evolution Describe the structures and body systems of animals that allow them to …
  10. biology

    Compare respiratory systems of the earthworm, frog, and squid, explaining how the specimen breathes and what organs are involved.

More Similar Questions