Biology_2020_STPM term 3 Trial_ SMK Sulaiman Pahang

The hierarchy taxonomic system of a domestic dog is shown in the table.

Complete the table shown.

• Ⅰ. Chordata

  Ⅱ. Canidae

  Ⅲ. Canis

  Ⅳ. familiaris

• Ⅰ. Canidae

  Ⅱ. Chordata

  Ⅲ. familiaris

  Ⅳ. Canis

• Ⅰ. Canis

  Ⅱ. familiaris

  Ⅲ. Chordata

  Ⅳ. Canidae

• Ⅰ. familiaris

  Ⅱ. Canis

  Ⅲ. Canidae

  Ⅳ. Chordata

A study to estimate the population of two plant species, Imperata sp. and Digitaria sp using quadrat sampling method was done in a field. Ten quadrats of 1 m × 1 m were placed randomly in the area. The result obtained from the study is shown in the table.

What is the species density of Digitaria sp?

• 2.0 per m²

• 4.1 per m²

• 5.1 per m²

• 7.4 per m²

Which of the following show the example for Ex situ conservation?

• 
• 
• 
• 

The mode of natural selection is shown in the graph.

Which of the followings are the effects of selection in P?

Ⅰ. Genetic diversity increases

Ⅱ. Genetic diversity decreases

Ⅲ. Lowers the frequency of alleles in the population.

Ⅳ. Increases the frequency of alleles in the population.

• Ⅰ and Ⅲ

• Ⅰ and Ⅳ

• Ⅱ and Ⅲ

• Ⅱ and Ⅳ

Fluctuation of population in fresh water lake ecosystem is shown in the diagram. Which of the following statements are true?

Ⅰ. The population of the primary consumer increases when food supply from the producer increases.

Ⅱ. The population of the primary consumer decreases when food supply from the producer increases.

Ⅲ. The population of the primary consumer increases when food supply from the producer decreases.

Ⅳ. The population of the primary consumer decreases when food supply from the producer decreases.

• Ⅰ and Ⅳ

• Ⅱ and Ⅲ

• Ⅱ and Ⅳ

• Ⅲ and Ⅳ

Which of the following is correct match for the types of reproductive isolation mechanism with the examples?

• Ⅰ. (a)

  Ⅱ. (b)

  Ⅲ. (b)

  Ⅳ. (a)

• Ⅰ. (a)

  Ⅱ. (b)

  Ⅲ. (a)

  Ⅳ. (a)

• Ⅰ. (b)

  Ⅱ. (a)

  Ⅲ. (b)

  Ⅳ. (a)

• Ⅰ. (b)

  Ⅱ. (b)

  Ⅲ. (a)

  Ⅳ. (a)

Which of the following is the major reservoir for phosphorus in the phosphorus cycle?

• Soil

• Rock

• Plants

• Rainwater

The following table shows map distances between genes along a chromosome.

• BADC

• BCAD

• BDAC

• BACD

Ali is married to Linda. They are healthy individuals. However, Linda's father is a haemophilia patient.

What is the genotype of Ali and Linda?

• Ali : X^HY

  Linda : X^HX^H

• Ali : X^HY

  Linda : X^HX^h

• Ali : X^HY

  Linda : X^hX^h

• Ali : X^hY

  Linda : X^HX^h

In a population under the Hardy-Weinberg equilibrium, 80% of the population are able to taste PTC.

Calculate the allele frequency of the non-taster.

• 0.20

• 0.45

• 0.67

• 0.89