1. Diploblastic
2. Triploblastic
3. Either (A) or (B)
4. Neither (A) or (B)
Triploblastic
1. Saliva
2. Trypsinogen
3. Ptyalin
4. Renin
Ptyalin
1. Diploblastic nature
2. Sedentary nature
3. Absence of digestive system
4. Marine habitat
Marine habitat
1. Below the tongue
2. Below the ear
3. Below the eye orbit
4. In the angle between two jaws
Below the ear
1. Asymmetrical organisms
2. Radially symmetrical organisms
3. Bilateral symmetrical organisms
4. Universally symmetrical organisms
Asymmetrical organisms
1. Some poriferans are solitary while some are colonial
2. Some poriferans are marine while some are fresh water
3. Some poriferans are sedentary while some are motile
4. All poriferans are diploblastic
Some poriferans are sedentary while some are motile
1. Single dorsal fin - Symmetrical tail fin
2. Two dorsal fins - Asymmetrical tail fin
3. Single dorsal fin - Asymmetrical tail fin
4. Two dorsal fins - Fresh water habitat
Single dorsal fin - Symmetrical tail fin
1. Head, foot and visceral mass
2. Proboscis, collor and trunk
3. Head. thorax and abdomen
4. Head, neck and abdomen
Head. thorax and abdomen
1. Urochordata
2. Cephalochordata
3. Hemichordata
4. Euchordata
Urochordata
1. Head
2. Foot
3. Visceral mass
4. Mouth
Mouth