1) Did Elves have pointed ears?

      They were evidently somewhat pointed; more so that human ears, at
  any rate.  The only place this matter is addressed directly is in The
  Etymologies, published in _The Lost Road_.  There, the following two
  entries for the element 'las' are given [Q == Quenya, N == Noldorin]:

    Las (1) *lasse  'leaf': Q lasse, N lhass;  Q lasselanta  'leaf-fall,
      autumn',  N lhasbelin (*lassekwelene),  cf. Q Narquelion [ KWEL ].
      Lhasgalen  'Greenleaf' (Gnome name of Laurelin).  (Some think this
      is related to the next and  *lasse  'ear'.  The Quendian ears were
      more pointed and leaf-shaped than [human].)

    Las (2)  'listen'.  N lhaw  'ears' (of one person), old dual  *lasu
      -- whence singular  lhewig.  Q lar, lasta-  'listen';  lasta
      'listening, hearing'  --  Lastalaika  'sharp-ears', a name,
      cf. N  Lhathleg.  N  lhathron  'hearer, listener, eavesdropper'
      ( < *la(n)sro-ndo ) ; lhathro  or  lhathrando  'listen in,
      eavesdrop'.
                                                    (The Lost Road, 367)

  Some have rejected the conclusion on the grounds that these entries
  were written before LotR was begun and therefore may not apply to it.
  It is thus significant that the element 'las' retained both its
  meanings, as is shown by examples in LotR itself, such as Legolas
  ('Green leaf') (TT, 106, 154), 'lassi' (== "leaves") in Galadriel's
  Lament (FR, 394), and Amon Lhaw (Hill of Hearing) (FR, 410).


References: FR, 394, (II, 8), 410 (II,9);
            TT, 106 (III,5), 154 (III,8);
            Letters, 282 (#211);
            The Lost Road (HoMe V), 367 ("The Etymologies").