Cover the answers column to test yourself.
| Incomplete Statement | Answer |
|---|---|
| Porifera have _______ level of organization | Cellular |
| Water enters a sponge through _______ and exits through _______ | Ostia; Osculum |
| _______ are collar cells in Porifera that create water current | Choanocytes |
| Cnidaria are _______ (germ layers) | Diploblastic |
| Stinging cells of Cnidaria are called _______ | Cnidocytes / Nematocysts |
| _______ is the sessile form; _______ is the free-swimming form in Cnidaria | Polyp; Medusa |
| Platyhelminthes are _______ (coelom type) | Acoelomate |
| Excretory cells in Platyhelminthes are _______ | Flame cells (protonephridia) |
| Aschelminthes are _______ (coelom type) | Pseudocoelomate |
| _______ causes filariasis and is transmitted by _______ mosquito | Wuchereria bancrofti; Culex |
| Annelida show _______ segmentation | Metameric |
| Leech secretes _______ to prevent blood clotting | Hirudin |
| Excretory organs of Annelida are _______ | Nephridia |
| _______ is the LARGEST phylum in Animal Kingdom | Arthropoda |
| Arthropoda have _______ exoskeleton | Chitinous |
| Excretory organs of Arthropoda are _______ | Malpighian tubules |
| _______ is a "living fossil" belonging to class _______ | Limulus; Merostomata |
| Mollusca is the _______ largest phylum | Second (2nd) |
| _______ is the rasping organ of Mollusca | Radula |
| _______ (class of Mollusca) has closed circulation | Cephalopoda |
| _______ is the unique hydraulic system of Echinodermata | Water vascular system |
| Adult Echinodermata have _______ symmetry; larvae have _______ symmetry | Radial; Bilateral |
| Echinoderm endoskeleton is made of _______ | Calcareous ossicles () |
| Hemichordata example is _______ | Balanoglossus |
| 4 features of Chordata: _______, _______, _______, _______ | Notochord, dorsal hollow nerve cord, pharyngeal gill slits, post-anal tail |
| In _______ (subphylum), notochord is only in larval tail | Urochordata |
| In _______ (subphylum), notochord persists throughout life | Cephalochordata / Branchiostoma |
| Crocodile has _______ chambered heart (exception among reptiles) | 4 |
| Platypus is _______ mammal | Oviparous |
| Heart chambers in Amphibia: _______ | 3 (2 auricles + 1 ventricle) |
| Body covering of Aves: _______ | Feathers |
| _______ bones reduce weight for flight in birds | Pneumatic |
| _______ and Mammalia are endothermic (warm-blooded) | Aves |
| Scientific name of silkworm is _______ | Bombyx mori |
| Scientific name of honey bee is _______ | Apis mellifera |