Question

inquizitive
chapter 17: animals and human evolution: neanderthal sex
17.2. explain the significance of symmetry and segmentation for some animal groups.
which of the following are correct for arthropods (including insects and their relatives)?
correct answer(s)
drag appropriate answer(s) here
they have bilateral symmetry.+
they have radial symmetry.+
their bodies are segmented.+
they have a hollow nerve chord (notochord).+
incorrect answer(s)
drag appropriate answer(s) here

Explanation:

Arthropods, like insects, have bilateral symmetry (body can be divided into two mirror - image halves) and segmented bodies (body divided into repeated units). Radial symmetry (body parts arranged around a central axis) is common in e.g., cnidarians (jellyfish), not arthropods. A hollow nerve chord (notochord) is a feature of chordates (e.g., vertebrates), not arthropods.

Answer:

Correct Answer(s): They have bilateral symmetry, Their bodies are segmented.
Incorrect Answer(s): They have radial symmetry, They have a hollow nerve chord (notochord).