What is the ph of blood?
Growth hormone is secreted by which gland?
In roots, the protoxylem lies towards the periphery and the metaxylem towards the center. This arrangement of primary xylem is called:
Algae and fungi belong to which plant group?
What is the plant cell wall mainly composed of?
Which of the following is a unicellular organism?
I. Amoeba
II. Paramecium
The human eye is most sensitive to yellow-green light having wavelength -
Nyctalopia, or night blindness, is caused by a deficiency in which vitamin?
Prothrombin, which is responsible for blood clotting, is released by:
The yellow color of human urine is due to:
