The life and activities of a cell is controlled by__________?
The life and activities of a cell is controlled by__________?
A. cytoplasm
B. nucleus
C. vacuole
D. mitochondria
A. cytoplasm
B. nucleus
C. vacuole
D. mitochondria
Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?
A. Hagfish
B. Fresh water fishes
C. Bony fishes
D. None of these
A. 6
B. 7
C. 8
D. 9
Approximately _____ species of bacteria are known to cause diseases in humans.
A. 100
B. 200
C. 300
D. 400
In most birds air sacs are ____________ in number?
A. 10
B. 3
C. 4
D. 9
Nephrostome in earthworm opens in____________?
A. External space
B. Internal Body cavity
C. In gut
D. In Bladder
Un-separated replica of chromosome is called___________?
A. Chromatin
B. Kinetochore
C. Chromatid
D. Centromere