Problema 3 · Biología URV Test Practice: Eukaryotes and Fungi

a. What represents the primary biological role of primary (non-motile) cilia?

Solución: b) Chemo- and mechanosensory signal reception

b. What metabolic adaptation characterizes the parabasalid group?

Solución: c) Anaerobic metabolic processing via hydrogenosomes

c. Which structural adaptation shields diatoms against grazer predation?

Solución: b) Hardened, rigid siliceous frustules

d. Which dinoflagellate genus is notorious for triggering toxic red tides?

Solución: c) Gonyaulax

e. Which defining cytological structure is unique to kinetoplastids?

Solución: b) A kinetoplast (dense disc of concatenated mtDNA within a single mitochondrion)

f. What light-harvesting pigment combination characterizes green algae?

Solución: b) Chlorophylls a and b

g. What is the primary ecological contribution of Phaeophyceae (brown algae)?

Solución: c) Provision of biomass, nutrition, and habitat structure (e.g., kelp forests)

h. Which pathology is induced by parasitic protozoans of the genus Leishmania?

Solución: d) Leishmaniasis

i. What lifestyle defines the diplomonad Giardia intestinalis?

Solución: b) Parasitic pathogen

j. What locomotive organelle drives displacement in flagellated protists?

Solución: b) Flagellum