Biology Answers

In a certain plant, both purple x purple and purple x blue produce purple and blue coloured progeny, but blue x blue gives rise only to blue.

2.1. What does this tell you about the genotypes of blue- and purple-flowered plants [5 marks]

2.2. Which gene is dominant

1. Compare the anatomical and physiological features of the respiratory system of a bovine and that of an avian.                                                                          

2. Explain why avian species are more prone to respiratory diseases than other animals

Two different islands on the Swedish west coast have different dense populations of hares. What could be the reasons for this?

Why are there largely different plant species in a forest compared to an open field?

What are the explanations for why there are no wild turtles in some places, such as Sweden? 

In what ways have plants adapted to live where there is a lack of water?

What would nature look like if there were no humans here? Would it be forest or open land?

Why are there fewer plant species in northern Europe than in southern Europe?