Biology
Quick Links
Past Questions
Question 4673
jamb 2021
a
mouth --> operculum -> gills
b
mouth -> gills > operculum
c
operculum > gills -> mouth
d
gills -> operculum --> mouth
Question 4674
jamb 2021
a
A person of blood group AB can donate blood only to another person of blood group AB
b
Persons of blood groups A and B can donate or receive blood from each other
c
A person of blood group AB can receive blood only from persons of blood group A or B
d
A person of blood group O can donate only to a person of blood group O
Take a test
CBT Simulator
Create and set up a CBT environment to practice for any CBT exam.
JAMB CBT Simulator
Practice JAMB CBT with real UTME past questions in CBT format.
WAEC CBT Practice 2026 Simulator
Practice WAEC past questions in a real CBT exam environment.
NECO CBT Practice 2026 Simulator
Prepare for 2026 NECO exams using real past questions in CBT mode.