(iii).

-Reducing sugar absent in set A because food is stored in form of starch;

-Reducing sugar present in set B because during germination; enzymes / diastate /carbohydrase; hydrolyse / convert / break down starch into reducing sugar;

(iv). Carbohydrase / diastase;

(a).

(i). Water / fresh water; Rj hydrophyte

(ii). Large (intracellular) airspaces for buoyancy / gaseous exchange ;

(b).

J - palisade mesophyll (cell, cell);

K -Air space / intracellular airspace;

L -Xylem;

M -Phloem;

RJ Wrong spellings.

c.

J -Photosynthesis / contains chlorophyll for photosynthesis;

L -Transport water and mineral salts / transports water;

RJ Transports mineral salts alone.

(d). Diameter 3 mm = 3000 cm DR 4MM = 4000 cm;

(a). (i). Arthropoda; RJ arthropods

(ii). -Jointed legs appandages;

-Presence of exoskeleton;

-Bilateral sysmetry;

c.

(i). Nymph;
(ii). Ecdysone /moulting hormone;
(iii). Nyph feed in different food / occupy a different ecological nichefrom the dult; reducing competition between the two;
(iv). -Destroys timber /fencing poles;
-Destroys crops
-improves soil fertility;
-used as food;