Jamb Biology 2013 Past Questions and Answers

Question 21:

• JAMB 2013

Which blood cell are involved in the immune response of vertebrates?

A. Phagoecytes
B. Lymphocytes
C. Erythrocytes
D. Monocytes

Question 22:

• JAMB 2013

The blood circulatory system of vertebrates consists of

A. Heart, arteries, capillaries and veins
B. Heart, aorta, capillaries and veins
C. Heart, aorta, arteries and veins
D. Heart, vena cava, arteries, and veins

Question 23:

• JAMB 2013

A plant tissue that carries water and mineral salts is the

A. Cambium
B. Xylem
C. Cortex
D. Phloem

Question 24:

• JAMB 2013

Which of the following helps in the clotting of blood?

A. Red blood cells
B. White blood cells
C. Plasma
D. Platelets

Question 25:

• JAMB 2013

The part of the mammalian skin involved in excretion is the

A. Sweat glands
B. Malpighian layer
C. Sebaceous gland
D. Horny layer