AP BIOLOGY

CLASSIFICATION

NINE COMMON ANIMAL PHYLA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following animal phyla has an exoskeleton?
A
cnidaria
B
mollusca
C
arthropoda
D
chordata
Explanation: 

Detailed explanation-1: -The phylum Arthropoda contains a wide diversity of animals with hard exoskeletons and jointed appendages. Many familiar species belong to the phylum Arthropoda-insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water (Fig. 3.72).

Detailed explanation-2: -Arthropods have sclerotein protein and polysaccharide called chitin in their exoskeleton.

Detailed explanation-3: -Arthropods Examples: Some familiar forms of arthropods are lobster, spider, centipedes, crab, millipedes, mites, cockroach, butterfly, mosquito, ants etc.

Detailed explanation-4: -The phylum Arthropoda is commonly divided into four subphyla of extant forms: Chelicerata (arachnids), Crustacea (crustaceans), Hexapoda (insects and springtails), and Myriapoda (millipedes and centipedes).

There is 1 question to complete.