Q 01/05

A true lemon is a hybrid of the bitter orange and which other citrus fruit?

A) Citron

B) Pomelo

C) Mandarin

D) Kumquat

Answer · why

A) Citron

The citron is one of the handful of original citrus species from which every modern variety descends.

Q 02/05

Some evidence suggests lemons originated during the 1st millennium BC in what is now which country?

A) Egypt

B) India

C) Italy

D) China

Answer · why

B) India

From there the fruit worked its way west through Persia, Iraq and Egypt over the following centuries.

Q 03/05

Roughly what percentage of lemon juice is citric acid?

A) 1-2%

B) 2-3%

C) 3-4%

D) 5-6%

Answer · why

D) 5-6%

That is about twice the citric acid of grapefruit juice and about five times that of orange juice.

Q 04/05

Which two countries together produced 31% of the world's lemons in 2024?

A) Spain and Italy

B) USA and Argentina

C) Turkey and Brazil

D) India and Mexico

Answer · why

D) India and Mexico

World production that year was about 23 million tonnes.

Q 05/05

Botanically, a lemon is a hesperidium, which is a modified form of what?

A) Berry

B) Drupe

C) Nut

D) Capsule

Answer · why

A) Berry

A hesperidium is a berry with a tough, leathery rind, the same structure shared by oranges and grapefruits.