Question 4946:

• JAMB 2022

Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?

A. The cells of their epidermis have no blood capillaries
B. They have well developed respiratory structures
C. Their cylindrical shape gives high surface area to volume ratio
D. Their surface area to volume ratio is very low

Question 4947:

• JAMB 2022

The structure that joins the two strands of a chromosome together is the?

A. Spindle
B. Cellulose
C. Centromere
D. Chromatid

Question 4948:

• JAMB 2022

When a colour blind woman marries a normal man, what is the probability of their son being colour blind?

A. 25%
B. 100%
C. 50%
D. 0%