see the attachement joined with this file please answer it quickely
Answers
(1) plants get nitrogen from
(i) by soil with the help of roots.
(ii) by atmosphere by the help of stomata.
nitrogen is use to make protiens in plants.
(2) (a) lactic acid accumulation cause muscle cramp.
(b)muscle cell,cramps occur by respiration in the lack of oxygen.
(3)(a)spore formation(asexual reproduction)
(b)it produces thread like structure hyphae on bread mould(rhizopus)when kept in moist area for long period but they are not reproductive part. they also have blob like structure present on them knows as sporangia which contain sporeswhich individualy later develop into rhizopus.
(c) algae,fungi
(4)C6H12O6+6O2->6CO2+6H2O+HEAT
IT GIVES HEAT AS PRODUCT THAT IS WHY IT IS CONSIDERED AS EXOTHERMIC PROCESS.RESPIRATION IS THE PROCESS OF BREAKDOWN OF FOOD FROM COMPLEX TO SIMPLE BY HELP OF OXYGEN.
(5)X =AGCL
Y=AGBR↓2
Z KA NHI PATA YAR
(6)JOULE'S LAW OF HEATING TELLS US THAT HEAT IS DIRECTLY PROPORTIONAL TO CURRENT,RESISTANCE AND TIME
H=I^2RT IS THE FORMULA WHICH IS NAMED AS JOULES LAW OF HEATING.
(B)BULB ,WATER HEATER, ETC.
(C) W=VIT
VI=P WHICH IS GIVEN I.E 1200
W=1200×20
42000JOULE ENERGY.
OR
(7)ohm's law= at constant temperature voltage increase if current increases i.e voltage is directly proportional to current.I=V
MATHEMATICALLY, V=I
V=RI(R IS CONSTANT HERE)
V=IR.
(B)RESISTANCE IS ABILITY OF ANY CONDUCTOR TO OPPOSE CURRENT.
(C)HEAT DEPENDS ON CURRENT, TIME, RESISTANCE.
(D)ALREADY TOLD.
(E)IT WILL ALSO DOUBLE AS THE HEAT ID DIRECTLY PROPORTIONAL TO RESISTANCE.
(8)in attachment
(9)in amoeba food doesn't get transported by vacoule from one place to another it helps only in excretion but in paramecium it enters in the body by groove and in vacoule diffusion occur for absoption,assimiliation, digestionand excretion.
(10)(a)for protection from dust and cleaning of oxygen enters into body.
(b)allow them to felx during breathing and stability.
(C)alveoli in which major gaseous exchange occur
(d)when we breathe out the diaphragm relaxes which helps to reduce area and they contracts when we breathe in for increasing area for gaseous exchange.
(e)just for gaseous exchange i.e.how we contracts and relaxes our ribs when we breathe in and out respectively.
YAAR LIKHTE LIKHTE HAATH DARD KRNE LGE PLSZ FOLLOW
