Biology Paper 2 Required Practicals Quiz

What is the main focus of the video for the 2022 exam?

• Chemistry practicals

• Plant growth and organism distribution

• Mathematics problems

• Physics experiments

Why is random sampling used in estimating population size?

• To reduce the number of organisms

• To avoid bias

• To increase the number of samples

• To make calculations easier

How is the mean number of daisies per quadrat calculated?

• By counting all daisies in the field

• By using a random number generator

• By dividing the total number of daisies by the number of quadrats

• By multiplying the number of quadrats by the field area

What is the purpose of calculating percentage cover?

• To determine the height of plants

• To measure the area covered by organisms like lichen

• To count individual organisms

• To estimate the total number of organisms

What tool is used to measure light intensity in a transect study?

• Barometer

• Thermometer

• Light meter

• Anemometer

How can you measure organism distribution vertically?

• By measuring the temperature

• By counting organisms on the ground

• By using a horizontal transect

• By using a small quadrat and measuring percentage cover

Which seed type is recommended for plant growth experiments in a lab?

• Corn seeds

• Bean seeds

• Mustard or cress seeds

• Sunflower seeds

What is the independent variable when studying the effect of light intensity on plant growth?

• Number of seeds

• Distance between the lamp and the petri dish

• Height of the plant

• Type of soil used

What is phototropism?

• The growth of plants in response to temperature

• The growth of plants in response to light

• The growth of plants in response to gravity

• The growth of plants in response to water

How does changing the angle of a petri dish affect plant growth?

• It changes the color of the plants

• It decreases the light intensity

• It affects the direction of plant growth

• It increases the number of seeds