Q1. Which chordate feature is replaced by the vertebral column in vertebrates?A. Pharyngeal gill slitsB. NotochordC. Dorsal nerve cordD. Post-anal tail
Q2. What is the major functional difference between open and closed circulatory systems?A. In a closed circulatory system, blood is pumped into sinuses instead of vesselsB. An open circulatory system allows direct diffusion of nutrients and gases to tissuesC. A closed circulatory system is only found in invertebratesD. Only vertebrates have an open circulatory system
Q3. Which of the following statements about amphibians is incorrect?A. They have a three-chambered heartB. They are poikilothermic (cold-blooded)C. They exclusively respire through lungsD. They have a dual mode of life, living in water and on land
Q4. Which of the following statements about cephalochordates is correct?A. They possess a vertebral columnB. They exhibit indirect developmentC. They are exclusively freshwater organismsD. They lack a notochord in the adult stage
Q5. Which of the following statements about cyclostomes is correct?A. They have jawsB. They possess paired finsC. They are ectoparasitesD. They have a bony endoskeleton
Q6. Which of the following statements about cnidarians is correct?A. They have a complete digestive systemB. They are exclusively sessile organismsC. They have a nerve net for coordinationD. They lack specialized stinging cells
Q7. Which of the following is an example of an ovoviviparous animal?A. FrogB. SharkC. PigeonD. Platypus
Q8. Which phylum exhibits indirect development with a trochophore larval stage?A. AnnelidaB. EchinodermataC. ArthropodaD. Platyhelminthes
Q9. Which of the following organisms exhibits metameric segmentation?A. TaeniaB. PheretimaC. AscarisD. Aplysia
Q10. Which structure in amphibians allows them to hear airborne sounds?A. Lateral line systemB. TympanumC. SpiraclesD. Operculum