List three unique features of Phylum Ciliophora.

Compound eye of insects

 Give one distinguishing morphological feature of each of the following orders:

 i) Cingulata

 ii) Sirenia 

iii) Primate

Correct the given statements.
i) Presence of cranium and paired appendages is a characteristic feature of Agnatha.
ii) In jawless fishes heart is a single chambered structure.
iii) Development in hagflshes includes a larval stage called ammocoetes.
iv) Special mucous glands are present in Petromyzon

Differentiate between Artiodactyla and Perissodactyla.

b) How are tuataras different from lizards?

State whether the following statements are ‘True’ or ‘False’:
i) Bivalves have adapted for filter feeding methods.
ii) The blood of cephalopods contains haemocyanin.
iii) Cephalopods have one of the best developed nervous systems among invertebrates.
iv) Development in bivalves includes trochophore and veliger larvae.