Concept:This question tests the correct matching of gaseous exchange or excretory structures with the organisms that possess them.
Explanation:Stomata are pores found on the leaves and young stems of vascular plants.
They allow plants to take in
CO2 for photosynthesis and to reduce water loss.
Spirogyra is a filamentous alga and does not have stomata.
It exchanges gases directly by diffusion through its cell wall and cell membrane.
Alveoli are respiratory surfaces in the lungs where
O2 and
CO2 are exchanged with the blood.
Malpighian tubules are excretory and osmoregulatory organs found in insects.
Contractile vacuoles remove excess water from the cells of lower organisms such as Amoeba.
Therefore, the pairing that says “Stomata → Spirogyra” is incorrect.
Answer:B. I