Question

Animals in phylum Arthropoda generally have these characteristics in common.

O chitinous exoskeleton
O no digestive system
Osegmented bodies
O chitinous exoskeleton and segmented bodies​

Answer 1

The answer is option A. chitinous exoskeleton and segmented bodies.

To know more about the characteristics of Arthropoda, please check below:

Characteristics of Phylum Arthropoda are:

1. This is the largest group of animals.
2. These animals are bilaterally symmetrical and segmented.
3. Appendages are attached with the body by arthrodial membrane.
4. Body is covered with chitinous exoskeleton.
5. There is an open blood circulatory system called haemocoel, and so the blood does not flow in well defined blood vessels.
6. The coelomic cavity is blood-filled.
7. They have jointed legs (the word Arthropod means jointed legs).
8. Examples are prawns, crabs, scorpions, cockroaches, spiders, butterflies, etc.

Answer 2

Chitinous exoskeleton and segmented bodies​.

Explanation:

Phylum Arthropoda are known as jointed legs species which include crabs, spiders, ants, etc. The important characteristic of Arthropoda is they have a hard chitinous exoskeleton that provides them protection and gives flexibility. These phylum species can survive in both terrestrial and marine habitats. Some characteristics of phylum Arthropoda are given below:

1) They have Chitinous exoskeleton which is hardened.

2) Their digestive tract is present at opposite ends of the body and complete with the mouth and anus.

3) They contain jointed limbs.

4) The body structure of these species is showing bilateral symmetry.