fruit-body is the plant's genitals

An historical example of an analogy used to explain science:

"The FRUIT-BODY consists of the genitals of plants;

• thus the FLOWERING is the generation,
• the ripening of the FRUIT is the birth…
• Therefore the CALYX is the bedroom,
• the COROLLA is the curtain,
• the FILAMENTS are the spermatic vessels,
• the ANTHERS are the testicles,
• the POLLEN is the sperm,
• the STIGMA is the vulva,
• the STYLE is the vagina,
• the [VEGETABLE] OVARY is the [animal] ovary,
• the PERICARP is the fertilised ovary,
• and the SEED is the egg.
• The calyx could also be regarded as the lips of the c*nt or the foreskin…

Carl Linnæus

Carl Linnæus (1751), Philosophia Botanica (translated by Stephen Freer)

Read about analogy in science

Read examples of scientific analogies

Many examples of science analogies are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.