UNICAL Biology 2011/2012 Past Questions

Practice each question, then open it to see the full details.

Who formulated the theory of natural selection in evolution?

A.Gregor Mendel
B.Jean Lamarck
C.Mathias Scheiden
D.Charles Darwin

Which of the following statements is not correct of respiration?

A.gaseous exchange occurs by diffusion
B.oxygen combines with haemoglobin in the respiratory surface
C.carbon dioxide produced in the tissue is removed by the process of osmosis
D.there are no special organs of respiration in plants

Which of the following constitutes the main internal tissues of a leaf?

A.cuticle
B.mesophyll
C.vascular tissue
D.lower epidermis

Which of the following is an autotrophic mode of nutrition?

A.chemosynthesis
B.saprophtism
C.parasitism
D.symbiosis

Which of the following structures differentiates an animal cell from a plant cell?

A.ribosomes
B.cell membrane
C.chloroplast
D.mitochondrion

The changes in colour of chameleon serves as a means of

A.attraction to the opposite sex
B.repulsion of the enemy
C.a camouflage from a predator
D.regulation of body temperature

At which of the following stages of mitosis do the two daughter chromosomes separate completely?

A.early prophase
B.telophase
C.anaphase
D.late prophase

The rate of dead organic matter in the soil is to

A.make the soil black
B.increase the mineral salt content
C.provide food for all living organisms
D.increase the acidity of the soil

If the petals of a flowering plant are removed, which of the following processes is likely to be effected

A.transpiration
B.pollination
C.germination
D.photosynthesis

Which of these substance is likely to be different in the diet of a person having goiter?

A.potassium
B.calcium
C.iodine
D.sodium