The functional units of kidneys are __________.

a. neurons
b. glomeruli
c. ureters
d. nephrons
e. collecting ducts


Ans: d. nephrons

Biology & Microbiology

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Polyploid plants are often unhealthy compared to diploid plants

a. True b. False

Biology & Microbiology

Abscission of fruits and leaves is controlled by

a. abscisic acid. b. ethylene. c. gibberellin. d. auxin. e. cytokinin

Biology & Microbiology

Which row represents the correct association?


A. Row 1
B. Row 2
C. Row 3
D. Row 4

Biology & Microbiology

Which statement is NOT true about water uptake in a plant root?

A. Water enters the root from the soil by osmosis. B. Water enters the cytoplasm of the root hairs by active transport. C. Water must enter the cytoplasm of the endodermal cells to get past the Casparian strip. D. Water travels by diffusion through the cell walls of the epidermis and cortex.

Biology & Microbiology