1. Chondrichthyes-possess cartilaginous endoskeleton
2. Mammalian-give birth to young ones
3. reptilia-possess 3-chambered heart with one incompletely divided ventricle
4. Chordate-possess a mouth provided with an upper an a lower jaw
Chondrichthyes-possess cartilaginous endoskeleton
1. Poriferans
2. Annelids
3. Coelenterata
4. Arthropoda
Poriferans
1. A-Isthmus B-Thyroid C-Trachea
2. A-Thyroid B-Isthmus C-Trachea
3. A-Trachea B-Isthmus C-Thyroid
4. A-Trachea B-Thyroid C-Isthmus
A-Thyroid B-Isthmus C-Trachea
1. Snail
2. Hydra
3. Amoeba
4. Leeth
Hydra
1. Sukers
2. Setae
3. Parapodia
4. All of these
All of these
1. A-Hypothalamus B-Ant pituitary C-Anterior pituitary
2. A-Hypothalamus B-Anterior pituitary C-Posterior pituitary
3. A-Pituitary B-Thyroid C-Pineal
4. A-Pituitary B-Thyroid C-Parathyroid
A-Hypothalamus B-Ant pituitary C-Anterior pituitary
1. Earthworm
2. Snail
3. Cockroach
4. Both (B) and (C)
Both (B) and (C)
1. Hydra
2. Earthworm
3. Pila
4. Snake
Pila
1. Echinodermata
2. Arthropoda
3. Mollusca
4. Annelid
Echinodermata
1. A-GH B-FSH C-LH
2. A-GnRH B-FSH C-LH
3. A-GH B-GnRH C-PRT
4. A-GnRH B-GH C-PRT
A-GnRH B-FSH C-LH