Post Utme Biology Past Questions and Answers

Question 846:

Which of the following factors does not control population growth?

A. Food shortage
B. Emigration
C. Predation
D. Abundance of food
E. Natural disaster

Question 847:

Which of the following statements best describe an ecosystem?

A. A place where living organisms can live successfully
B. The interactions between living organism in a habitat and the non-living part of the environment
C. A biological association between a plant and an animal
D. A system of grouping organisms in a habitat
E. None of the above

Question 848:

Which of these represents a correct food chain in nature?

A. Crustacea \(rightarrow\) diatom \(rightarrow\) fish \(rightarrow\) man
B. Diatom \(rightarrow\) crustacea \(rightarrow\) fish \(rightarrow\) man
C. Fish \(rightarrow\) crustacea \(rightarrow\) man \(rightarrow\) diatom
D. Diatom \(rightarrow\) fish \(rightarrow\) crustacea \(rightarrow\) man
E. None of the above

Question 849:

____________ is involved in the mechanism of expelling water from the protozoans during the ____________

A. Contractile vacuole, Osmoregulation
B. Contractile vacuole, Phagocytosis
C. Food vacuole, Ultrafilteration
D. Food vacuole, Pinocytosis
E. Cell membrane, Pinocytosis

Question 850:

____________ is used for photosynthesis in Euglena sp.

A. Reservoir
B. Nucleus
C. Chloroplast
D. Paramylon granule
E. Pellicle