Which of the factors listed below does not affect the distribution of paddy population.

• temperature

• breeding site

• light

• water

A farmer plants an orchard of apple trees. What is the most likely dispersion pattern of that population

• random

• clumped

• uniform

• scattered

The picture represents a sunny, dry desert. Which factor most likely limits the desert’s carrying capacity for plant life?

• the number of animals that eat plants

• the availability of space to grow

• the amount of sunlight

• the availability of water

A population of salamanders that live in a river require clear, fresh water to survive. New housing developments have caused tons of sediment to muddy the river. Which of these most likely will happen to the salamander population?

• The salamanders will decrease in number because of the water quality.

• The salamanders will move across land to another river.

• The salamanders will quickly adapt to living in the muddy water.

• The salamanders go live on land.

Nesting birds often space themselves evenly from other nests. This pattern is called

• random

• clumped

• uniform

This is the most commonly seen distribution pattern. Example: wolves. This is usually because there are resources found in particular areas and the organisms need more space to survive.

• random

• clumped

• uniform

Which area is more densely populated?

• polar climate

• temperate climate

What is a square called that we use to sample populations?

• grid

• quarter

• square

• quadrat

Diagram below shows the distribution of white mold, yellow mold and black mold on a moist bread which was kept in a dark condition at room temperature after 12 days.

What is the percentage of coverage of black mold on the bread?

• 15%

• 60%

• 30%

• 10%

Aini carried out a study on the population of Mimosa pudica in the school’s field. She used the quadrat sampling technique in the study. The area of each quadrat is 1 m².

The results is shown in table below.

The percentage coverage of grass P in the school’s field is …

• 44%

• 20%

• 65%

• 88%