Structural Organisation in Animals

Q1.How do the ureters differ in male and female frogs?

• AIn males, ureters act as urinogenital ducts; in females, ureters and oviducts open separately into the cloaca
• BIn females, ureters act as urinogenital ducts; in males they open separately
• CThere is no difference; both are identical
• DMales lack ureters; only females have them

Q2.Which organs act as respiratory organs on land in frogs?

• ASkin only
• BLungs only
• CBuccal cavity, skin and lungs
• DGills and lungs

Q3.The cloaca in a frog serves as a common passage for the digestive, excretory, and reproductive systems. What is the significance of this shared structure?

• AIt shows a less evolved body plan compared to organisms with separate openings for each system
• BIt is an advanced feature that increases efficiency
• CIt is only used for reproduction
• DIt is only used for excretion

Q4.How does lymph differ from blood?

• ALymph has more proteins and RBCs than blood
• BLymph lacks some proteins and RBCs found in blood
• CLymph contains more haemoglobin than blood
• DLymph and blood are identical in composition

Q5.What is the function of vocal sacs in male frogs?

• ATo store food
• BTo produce sound
• CTo absorb water
• DTo aid in respiration