Biology_2020_STPM term 3 Trial_ SMK Kelantan

Which of the following three taxons are lower than class?

• Kingdom, Family, Order

• Order, family, Genus

• Phylum, Genus, Species

• Phylum, Order, Family

The table shows four phyla and their examples.

Which phyla correspond correctly with their respective examples?

• Ⅰ. (c)

  Ⅱ. (b)

  Ⅲ. (a)

  Ⅳ. (d)

• Ⅰ. (a)

  Ⅱ. (b)

  Ⅲ. (c)

  Ⅳ. (d)

• Ⅰ. (b)

  Ⅱ. (c)

  Ⅲ. (d)

  Ⅳ. (a)

• Ⅰ. (c)

  Ⅱ. (d)

  Ⅲ. (a)

  Ⅳ. (b)

Which of the following are the examples of in situ conservation?

Ⅰ. Turtle Island Park

Ⅱ. Penang Botanical Garden

Ⅲ. Mulu National Park

Ⅳ. Gene Bank

• Ⅰ and Ⅱ

• Ⅰ and Ⅲ

• Ⅰ, Ⅱ and Ⅲ

• Ⅰ, Ⅲ and Ⅳ

A quadrat frame of size 50cm × 50cm was used to determine the density of a species Q in areas R and S. The results obtained are shown in the diagram.

What id the density, in units per square meter, of species X in the two areas?

• R : 40

  S : 16

• R : 10

  S : 4

• R : 5

  S : 2

• R : 400

  S : 160

Carrying capacity of a population is

• the number of individuals in a population

• the population size of a species which can be supported by resources available in a habitat

• the population size when the natality rate is more than the mortality rate

• the population size when the mortality rate is more than the natality rate

The graph shows the rate of growth of an animal population against the population size.

Which of the following is true of the population at point X?

• K-strategy action

• Maximum rate of natality

• Carrying capacity of the population

• Minimum rate of mortality

Which is true of continuous variation?

• Its example is the skin colour in humans.

• Its differences are discrete.

• It is controlled by one gene.

• It is not influenced by environmental factors.

A species of organisms is separated into two populations by mountain range. Mating between individuals of the two populations produces sterile progeny. Which of the following explains this phenomenon?

• Speciation does not take place.

• Genetic drift does not take place.

• Allopatric speciation takes place.

• Sympatric speciation takes place.

Which is not associated with speciation?

• Genetic drift

• Isolation

• Adaptive radiation

• Inbreeding

In Drosophila, allele for short leg (p) is recessive to the allele for normal leg (P) and allele for hairy body (l) is recessive to allele for normal body (L). From the cross PPLl X Ppll, what is the expected ratio of the progeny that shows the normal phenotype for both traits?