Alphabet

(1)The fruit in Tarte Tatin? Apples
(2)Children's TV programme featuring Professor Yaffle (the wooden woodpecker)? Bagpuss
(3)Charles Babbage's notable invention? Computer
(4)Framework for oil well drilling machinery? Derrick
(5)Traditional fur trim on ceremonial and heraldic robes? Ermine (From the white winter coat of the ermine - mustela erminea - AKA stoat and short-tailed weasel. Incidentally the black spotted patterns in heraldic ermines are the black tips of the tails in the joined pelts.)
(6)A maker of arrows? Fletcher
(7)A hot spring which shoots out boiling water and steam? Geyser
(8)Metric unit equal to 10,000 square metres? Hectare
(9)Chemical element with atomic number 53? Iodine
(10)Contest fought between medieval knights with lances on horseback? Joust
(11)Basketball-netball hybrid game for mixed male and female teams? Korfball
(12)The twelfth letter of the Greek alphabet? Mu (= m)
(13)The Tokyo stock exchange index? Nikkei
(14)A fine translucent stiff cotton muslin used chiefly for making dresses? Organdie/organdy/organza
(15)Female part of a flower? Pistil
(16)A type of low fat curd cheese? Quark (interestingly perhaps indirectly related to particle physics quarks, a term adopted by US physicist Murray Gell-Mann in 1964, based he says on the mythical seabird chorus "...Three quarks for Muster Mark..." in James Joyce's book (Finnegans Wake, thought to mean three cheers or jeers। Either or both Gell-Mann and Joyce might have been alluding ironically to quark cheese since in German the word extends metaphorically to mean rubbish or nonsense।)
(17)The right page of an open book? Recto (the left page is verso)
(18)The white part of the human eye? Sclera
(19)Bride in the 1998 film Bride of Chucky? Tiffany
(20)Mottled green and yellow citrus fruit hybrid between a grapefruit and tangerine? Ugli
(21)Roman goddess of the hearth? Vesta
(22)US state of which Madison is capital? Wisconsin
(23)Irrational fear or dislike of people from foreign countries? Xenophobia
(24)Circular collapsible tent of felt or skins used by Mongolian nomads? Yurt
(25)Italian dessert of whipped egg yolks, sugar and marsala wine? Zabbaglione
(26)Zurich's river? Limmat