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.Management Sciences
Category: Biology Mcqs
Out of 92 naturally occurring chemical elements how many are considered as bio-elements?
A. 6
B. 16
C. 26
D. 15
Which of the following statement about eiliates in incorrect_____________?
A. Contain mainly unicellular organisms.
B. Their contractile vacoule is respobsible for water regulation.
C. They are even capable of sexual reproduction.
D. Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process.
Which of the following constituent is/are maximum in the filtrate that leaves proximal convoluted tubules?
A. Glucose
B. Amino acids
C. Nitrogenous waste
D. All of these
___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules?
A. Osmotic
B. Pressure
C. Both of these
D. None of these
Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________?
A. Hydathods
B. Stomata
C. Lenticels
D. None of these
In an annelids, the contraction of circular muscle results in___________?
A. Lengthening of the body.
B. Shortening of the body.
C. Widening of body
D. Thinning of body
A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called________________?
A. Monosaccharide
B. Fatty acid
C. Neutral lipid
D. Nucleic acid
Secretin inhibits production of__________________?
A. Gastric juice
B. Pancreatic juice
C. Bile
D. All of these
An increrase in plant girth due to activity of _____________ is called secondary growth?
A. Cork cambium
B. Pith.
C. Vascular cambium.
D. Both a and c
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