The food of hydra consists of___________??
A. Humus
B. Detritus
C. Dead microscopic animals
D. Small crustaceans
Category: Biology Mcqs
In which of the following pigments major energy reserves and cell wall are like plants??
A. Rhodophyta
B. Chlorophyta
C. Phaeophyta
D. Chrysophyta
In animals excess of nitrogen is excreted primarily in form of___________??
A. Creatinine
B. Trimethyamine oxide
C. Pyrimidine
D. Ammonia
The fate of each blastomere is foretold. The cleavage will be as____________??
A. Spiral and indeterminate
B. Radial and indeterminate
C. Radial and indeterminate
D. Spiral and determinate
Which of the following transmits nerve impulse from receptors to central nervous system??
A. Sensory neuron
B. Motor neuron
C. Associative neuron
D. none of these.
PS I has chlorophyll a molecule which absorbs maximum light of _________ nm ??
A. 600
B. 650
C. 680
D. 700
Which of the following statement about Homeostasis is incorrect??
A. There is a definite control system that regulates the homeostatic activities
B. Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment
C. Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment
D. All are correct
Which of the following has no central nervous system??
A. Hydra
B. Man
C. Planaria
D. Cockroach
Strong chlorosis is due to the deficiency of _____________ in plants??
A. Magnesium
B. Nitrogen
C. Potassium
D. Phosphorus
Cuticular transpiration is _________ of total transpiration??
A. 6-8%
B. 5-7%
C. 7-9%
D. 4-6%
