Which of the following forms about 55% of the volume of the blood in man?
leucocytes
platelets
plasma
erythrocytes
Correct answer is C
No explanation has been provided for this answer.
The part of the mammalian skin involved in excretion is the
sweat glands
malpighian layer
sebaceous gland
horny layer
Correct answer is A
No explanation has been provided for this answer.
Which of the following helps in blood clotting?
Red blood cells
White blood cells
Plasma
Platelets
Correct answer is D
No explanation has been provided for this answer.
A plant tissue that carries water and mineral salts is the
cambium
xylem
cortex
phloem
Correct answer is B
No explanation has been provided for this answer.
The blood circulatory system of vertebrates consists of
heart, arteries, capillaries, and veins
heart, aorta, capillaries, and veins
heart, aorta, arteries, and veins
heart, vena cava, arteries, and veins
Correct answer is A
No explanation has been provided for this answer.