Q1. What type of circulatory system is found in arthropods?A. Closed circulatory systemB. Open circulatory systemC. Double circulatory systemD. Water vascular system
Q2. Which of the following groups has an endoskeleton composed of calcareous ossicles?A. MolluscaB. ArthropodaC. EchinodermataD. Platyhelminthes
Q3. Which of the following statements about cartilaginous fishes is incorrect?A. They have a two-chambered heartB. They have placoid scalesC. They possess a swim bladderD. They lack an operculum
Q4. Which of the following is a characteristic feature of arthropods?A. Water vascular systemB. Jointed appendagesC. ParapodiaD. Flame cells
Q5. Which of the following statements about mammals is correct?A. All mammals have placental developmentB. They possess mammary glands for nourishing their youngC. They are exclusively terrestrialD. They excrete uric acid as their primary nitrogenous waste
Q6. Which of the following levels of organization is exhibited by sponges?A. Tissue levelB. Organ levelC. Cellular levelD. Organ system level
Q7. Which of the following statements about sponges is incorrect?A. They have a cellular level of organizationB. They exhibit external fertilizationC. They possess a nerve net for coordinationD. They use choanocytes for filter-feeding
Q8. Which of the following features is incorrect about birds?A. They have pneumatic (hollow) bonesB. They excrete ureaC. They are oviparousD. They have a four-chambered heart
Q9. Which of the following statements about reptiles is incorrect?A. They have dry, cornified skin with epidermal scalesB. They lay eggs with leathery shellsC. All reptiles have a four-chambered heartD. They are poikilothermic (cold-blooded)
Q10. Which of the following is incorrect about mammals?A. They possess mammary glandsB. They are homeothermic (warm-blooded)C. All mammals give birth to live youngD. They have a diaphragm for respiration