Biology_2015_STPM term 3_Objectives

Which is about taxonomic hierarchy?

• The broadcast taxon is phylum or division

• Order is a taxon within a class and it consists of several families

• Different organisms within a class are from the same family

• Different organisms within an order may belong to different classes

Which type of diversity correspond correctly to its description?

• Species : (e)

  Genetic : (g)

  Ecological : (f)

• Species : (f)

  Genetic : (e)

  Ecological : (g)

• Species : (g)

  Genetic : (e)

  Ecological : (f)

• Species : (g)

  Genetic : (f)

  Ecological : (e)

Which ecosystem has the pyramid of biomass as shown below?

• Desert

• Temperate forest

• Aquatic

• Tropical rain forest

Which statement are true about the graphs?

I. Compe tion occurs between organism X and organism Y

II. Organism Y is a prey to organism X

III. Organism Y is a predator to organism X

IV. The population growth is affected by density-dependent factors

• I and III

• I and IV

• II and III

• II and IV

What is the relative species density of plant A in the field?

• 44.0

• 11.0

• 0.55

• 0.45

Which is true about P and Q?

• I and II

• I and IV

• II and III

• III and IV

Crow and pigeon cannot interbreed due to

• gametic isolation

• temporal isolation

• ecological isolation

• behavioral isolation

A type of gene interaction in which the product of one gene overrides the effect of another gene is called

• linkage

• mutation

• epitasis

• codominance

Which is not associated with gene pool?

• Gene frequency

• Allelic frequency

• Genotypic frequency

• Phenotypic frequency

What is the function of DNA polymerase I during DNA replication?

• It catalyses the joining of Okazaki fragments

• It catalyses the sysnthesis of Okazaki fragments

• It catalyses the systhesis of a short RNA primer

• It catalyses the replacement of RNA primer by DNA