Question

question 8 (10 points)
which organisms are by far the most numerous and diverse phylum of animals?

a) sponges

b) echinoderms

c) roundworms

d) flatworms

e) cnidarians

f) arthropods

g) chordates

h) mollusks

i) annelids

Explanation:

Arthropods are the largest phylum in the animal kingdom. They have a wide range of species with diverse morphological and ecological adaptations. Sponges (Porifera) are simple multicellular organisms. Echinoderms (like starfish) have a specific body plan. Roundworms (Nematoda), flatworms (Platyhelminthes), cnidarians (like jellyfish), chordates (including vertebrates), mollusks (like snails), and annelids (like earthworms) are all phyla but not as numerous and diverse as arthropods. Arthropods include insects, crustaceans, arachnids etc. which show a vast array of forms, habitats and life - styles.

Answer:

f) arthropods