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.Management Sciences
Category: Biology Mcqs
Among the following organisms which shows the best adaptations for locomotion?
A. Amoeba.
B. Earthworm.
C. Reptiles
D. Amphibians.
Which of the following is incorrect for the lysogenic cycle in life cycle of bacteriophage_____________?
A. Phage when gets incorporated with the bacterial chromosome is called prophage
B. The bacterium continues to live and reproduce normally
C. Lysogenic bacteria may get infected by the related phage
D. The cycle may convert into lytic type resulting from environmental exposure
Out of total organisms on earth, _____________are vascular plants?
A. 53.10%
B. 19.90%
C. 17.60%
D. 9.40%
Shrinkage of protoplast due to exosmosis of water is__________?
A. imbibition
B. plasmolysis
C. deplasmolysis
D. adhesion
Which system is present in nematodes?
A. Sac – like digestive system
B. Tube – like digestive system
C. Circulatory system
D. Respiratory system
Which of the following is the empirical formula of chlorophyll b?
A. C55H70O5N4Mg
B. C55H72O6N4Mg
C. C55H70O6N4Mg
D. C55H72O5N4Mg
Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?
A. Change in membrane protein composition.
B. Change in the solute composition of the cell membrane which prevents crystallization.
C. Increase in proportion of unsaturated fatty acids.
D. Development of heat shock proteins.
Okazaki fragments are connected together through action of_________________?
A. Primase
B. Polymerase
C. Helicase
D. Ligase
Enteron in coelenterates acts as___________?
A. Digestive cavity
B. Body cavity
C. Transporting cavity
D. all of these
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