Which of the following best describes protoplasmic invertebrates?
a. Invertebrates with a complex body structure and specialized organs for various functions.
b. Invertebrates that lack a true body cavity and have a body composed mainly of a simple, undifferentiated protoplasm.
c. Invertebrates with a segmented body and a well-developed nervous system.
d. Invertebrates with a hard external skeleton and jointed limbs.

Question

13-08-2024
Biology

Answered

Which of the following best describes protoplasmic invertebrates?
a. Invertebrates with a complex body structure and specialized organs for various functions.
b. Invertebrates that lack a true body cavity and have a body composed mainly of a simple, undifferentiated protoplasm.
c. Invertebrates with a segmented body and a well-developed nervous system.
d. Invertebrates with a hard external skeleton and jointed limbs.

Answer :

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RadiantRiddle RadiantRiddle · Answer 1 · 2024-08-13T20:27:53-04:00

Answer: B) Invertebrates that lack a true body cavity and have a body composed mainly of a simple, undifferentiated protoplasm.

Explanation: Protoplasmic invertebrates, such as members of the phylum Protozoa, have simple, undifferentiated bodies without a true body cavity. They rely on protoplasm for all essential functions.

Here’s why the other options are incorrect:

A) Invertebrates with a complex body structure and specialized organs for various functions: This describes more complex invertebrates, such as those in the phylum Annelida (earthworms) or Arthropoda (insects), which have specialized organs and body systems.

C) Invertebrates with a segmented body and a well-developed nervous system: This description fits segmented invertebrates like those in the phylum Annelida and some members of Arthropoda, which have a segmented body and a more complex nervous system.

D) Invertebrates with a hard external skeleton and jointed limbs: This applies to arthropods, such as insects and crustaceans, which have exoskeletons and jointed limbs.