Q1. Which of the following is a function of the clitellum in annelids?A. ExcretionB. ReproductionC. RespirationD. Food digestion
Q2. Which of the following correctly differentiates between diploblastic and triploblastic animals?A. Diploblastic animals lack mesoderm, while triploblastic animals have three germ layersB. Diploblastic animals have bilateral symmetry, while triploblastic animals have radial symmetryC. Only triploblastic animals show tissue-level organizationD. Only diploblastic animals exhibit metameric segmentation
Q3. Which feature in chordates aids in respiration during early development?A. LungsB. Pharyngeal gill slitsC. TracheaeD. Spiracles
Q4. Which of the following is a distinguishing characteristic of phylum Hemichordata?A. Notochord present throughout lifeB. Body divided into proboscis, collar, and trunkC. Jointed appendagesD. Water vascular system
Q5. Which feature distinguishes monotremes from other mammals?A. Viviparous reproductionB. Presence of hairC. Egg-laying (oviparous)D. Four-chambered heart
Q6. Why do amphibians undergo cutaneous respiration?A. To supplement oxygen intake through lungsB. Because they lack lungsC. To excrete nitrogenous wasteD. To regulate body temperature
Q8. 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
Q9. Which of the following is a characteristic feature of mammals?A. Presence of feathersB. Ectothermic natureC. Hair or fur on the bodyD. Scales covering the entire body
Q10. Which of the following statements about mammals is correct?A. All mammals lay eggsB. They have a four-chambered heartC. They lack sweat glandsD. They excrete uric acid