Q1. Which of the following animals possesses a water vascular system?A. AscarisB. AsteriasC. LimulusD. Octopus
Q2. Which excretory organ is present in Annelida?A. Malpighian tubulesB. NephridiaC. Flame cellsD. Green glands
Q3. Which of the following is an example of a pseudocoelomate animal?A. AnnelidaB. ArthropodaC. AschelminthesD. Echinodermata
Q4. Which of the following statements about cartilaginous fishes is correct?A. They have a bony endoskeletonB. They have an operculum over the gillsC. They lack a swim bladderD. They use external fertilization
Q5. Which of the following is an example of a diploblastic animal?A. AscarisB. SyconC. HydraD. Earthworm
Q6. Which of the following features is a synapomorphy of Chordata?A. Presence of jointed appendagesB. Body segmentationC. Pharyngeal gill slitsD. Exoskeleton of chitin
Q7. Which of the following animals belongs to the phylum Hemichordata?A. BalanoglossusB. AscarisC. PheretimaD. Octopus
Q8. Which phylum is characterized by the presence of a mantle and a shell?A. AnnelidaB. MolluscaC. ArthropodaD. Hemichordata
Q9. Which of the following statements about hemichordates is incorrect?A. They have a body divided into proboscis, collar, and trunkB. They possess a true notochordC. They are marine, worm-like organismsD. They have an open circulatory system
Q10. Which phylum consists of animals with a segmented body and nephridia for excretion?A. MolluscaB. ArthropodaC. AnnelidaD. Platyhelminthes