Science Quiz #427
Science and Nature Quiz for 22 March 2017
A new science quiz is available each week. Try our daily general knowledge quiz or work through our archive of daily and themed quizzes.
1
Which is the common name of the perennial herb, crocus sativus, with purple flowers and orange coloured stigmas?
Select from the options above.
2
When is a barium meal given to someone?
A
Before they take their clothes off for a medical examination
B
Before they go to a bar
C
Whenever they go to Bari, Italy
D
Before an X Ray examination of the digestive system
Select from the options above.
3
Ayahuasca, a tea prepared from a flowering vine in the Amazon and used for healing ceremonies, contains which of these?
Select from the options above.
4
The upper pair of a slug's tentacles is used to detect light or movement; what is the lower pair used for?
Select from the options above.
5
Some tarantulas, caterpillars and plants share what defence mechanism?
A
Camouflage as a dangerous animal or insect
Select from the options above.
6
What are rotating stars that emit a beam of electromagnetic radiation that can only be observed when the beam of emission is pointing towards the Earth, which is called "the lighthouse effect"?
Select from the options above.
7
What medical tool was developed in the early 1950s, consisting of two parts, a ball surrounded by a cage constructed using Plexiglas later changed to silicone-coated material?
D
Artificial mechanical heart valve
Select from the options above.
