Q1. Which excretory organ is found in crustaceans?A. Malpighian tubulesB. Green glandsC. NephridiaD. Flame cells
Q2. Which of the following features is incorrect about bony fishes (Osteichthyes)?A. They have a bony endoskeletonB. They have a two-chambered heartC. They lack an operculumD. They use a swim bladder for buoyancy
Q4. Why are reptiles considered the first true terrestrial vertebrates?A. They have an aquatic larval stageB. They possess an amniotic eggC. They rely on cutaneous respirationD. They exhibit external fertilization
Q5. Which of the following adaptations is seen in freshwater fishes for osmoregulation?A. Excreting concentrated urineB. Drinking seawater continuouslyC. Excreting large amounts of dilute urineD. Absorbing excess salts from the surrounding water
Q6. Which of the following is a characteristic feature of mammals?A. Presence of feathersB. Lungs with air sacsC. Mammary glandsD. Cloaca
Q7. Which of the following statements about mammals is correct?A. All mammals give birth to live youngB. They have a diaphragm for respirationC. They are ectothermic animalsD. They have three-chambered hearts
Q8. Which of the following statements is true regarding locomotion in annelids?A. They use jointed appendages for movementB. They move using muscular contraction and setaeC. They have specialized wings for flyingD. They rely solely on cilia for movement
Q9. Which of the following characteristics is incorrect about mammals?A. They are warm-bloodedB. They possess a diaphragm for respirationC. They have a three-chambered heartD. They have heterodont dentition
Q10. Which of the following groups of animals is exclusively marine?A. EchinodermataB. AnnelidaC. ArthropodaD. Platyhelminthes