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2021-12-13 10:18:22

Open / Comment

2021-12-12 10:01:50 #Revision

Blood Group

Introduction
Based on the presence and absence of antibodies, the blood is classified into different groups.
Further, while classification, the presence and absence of the inherited antigenic substances also considered.
The types of blood groups are inherited and represent contributions from both the father and the mother.

ABO Blood Group System
In human blood, usually, there are two antigens and antibodies.
The two antigens are antigen A and antigen B.
The two antibodies are antibody A and antibody B.
The antigens are remaining in the red blood cells, whereas the antibodies are found in the serum.
Based on the antigen property, the blood group of all human beings can be classified as −
➭ Blood Group A − antigen A and antibody B
➭ Blood Group B − antigen B and antibody A
➭ Blood Group AB − antigen A and antigen B and no antibody
➭ Blood Group O − no antigen, but antigen A as well as antibody B
Consideration of the ABO system is the most imperative while transfusion of human blood.
The ABO blood group systems were first discovered by Karl Landsteiner in 1901.

Rh Blood Group System
The Rh system (the meaning of Rh is Rhesus) is another significant blood-group system. It is very important to match Rh system while blood transfusion.
Rh antigen first studied in Rhesus monkeys; therefore, its name is given Rh factor/system.
The person who does not have Rh antigen is known as Rh negative (Rh-ve) and the person who has the Rh antigen is known as Rh positive (Rh+ve). Open / Comment

2021-12-10 22:47:25 Some Important Increasing Order :

1. Bond Angle :

(i) CH4 , C2H4 , C2H2
(ii) H2O, NH3 , CH4 , CO2
(iii) H2O, NH3 , CH4 , BH3
(iv) NO2—, NO2 , NO2+
(v) H2Se, H2S, H2O
(vi) AsH3 , PH3 , NH3
(vii) PF3 , PCl3 , PBr3 , PI3
(viii) NF3 , NCl3
(ix) NF3 , NH3 , NCl3
(x) OF2 , OH2 , Cl2O

2. Melting Point :

(i) Cs, Rb, K, Na, Li
(ii) Mg, Ba, Sr, Ca, Be
(iii) CaI2 , CaBr2 , CaCl2 , CaF2
(iv) BeCl2 , MgCl2 , CaCl2 , SrCl2 , BaCl2
(v) NaI, NaBr, NaCl, NaF
(vi) CsCl, RbCl, KCl, NaCl
(vii) AlCl3 , MgCl2 , NaCl

3.Boiling Point :

(i) PH3 , AsH3 , NH3 , SbH3
(ii) H2S, H2Se, H2O
(iii) HCl, HBr, HI, HF
(iv) NH3 , HF, H2O
(v) He, Ne, Ar, Kr
(vi) H2O, D2O
(vii) H2 , Cl2 , Br2

4.Dipole moments :

(i) CCl4 , CHCl3 , CH2Cl2 ,CH3Cl
(ii) NF3 , NH3 , H2O, HF
(iii) Cis-chloropropene, Trans-chloropropene
(iv) p, m, o-dichlorobenzene
(v) CH3I, CH3Br, CH3F, CH3Cl
(vi) NH3 , SO2 , H2O, HF
(vii) H2S, H2O
(viii) HI, HBr, HCl, HF
(ix) PH3 , ASH3 , SbH3 , NH3
(x) H2O, H2O2 Open / Comment

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2021-12-09 16:58:11 Increasings or Decreasing Order

01. Melting point=
Li > Na > K > Rb > Cs

02. Colour of the flame=
Li-Red, Na-Golden, K-Violet, Rb-Red, Cs-Blue, Ca-Brick red, Sr-Blood red, Ba-Apple green

03. Stability of hydrides =
LiH > NaH > KH > RbH> CsH

04. Basic nature of hydroxides=
LIOH < NaOH < KOH < RbOH < CsOH

05. Hydration energy=
Li> Na > K> Rb > Cs

06. Reducing character=
Li > Cs > Rb > K > Na

07. Stability of +3 oxidation state=
B> Al > Ga > In > T1

08. Stability of +1 oxidation state= Ga < In < TI

09. Basic nature of the oxides and hydroxides=
B< Al< Ga < In < TI

10. Relative strength of Lewis acid= BF3 < BCl3 < BBr3 < BI3

11. Ionisation energy=
B> Al In
12. Reactivity=
C
13. Metallic character=
C< Si < Ge < Sn < Pb

14. Acidic character of the oxides=
Co2 > SiO2 > Ge02 > SnO2 > PbO2

15. Reducing nature of hydrides=
CH4 < SiH4 < GeH4 < SnH4 < PbH4

16. Thermal stability of tetrahalides=
CCl4> SiCl4> GeCl4> SnCl4 > PbCl4

17. Oxidising character of M+4 species=
GeCl4 < SnCl4 < PbCl4

18. Ease of hydrolysis of tetrahalides=
SiCl4 < GeCl4 < SnCl4 < PbCI4

19. Acidic strength of trioxides=
N203 > P2O3 > As2O3

20. Acidic strength of pentoxides=
N2O2 > P2O2> As202 > Sb2O2 > Bi̟202

21. Acidic strength of oxides of nitrogen=
N2O < NO
22. Basic nature/ bond angle/ thermal stability and dipole moment of hydrides=
NH3 > PH3 > AsH3 > SbH3 > BiH3

23. Stability of trihalides of nitrogen=
NF3 > NCl3 > NBr3

24.Lewis base strength=
NF3
25. Ease of hydrolysis of trichlorides=
NCl3 > PCI3 > AsCl3 > SbCl3 > BiCl3

26. Lewis acid strength of trihalides of P, As, and Sb=
PCl3 > ASCl3 > SbCl3

27. Lewis acid strength among phosphorus trihalides
PF3 > PCl3 > PBr3 > PI3

28. Melting and boiling point of hydrides=
H2O > H2Te > H2Se >H2S

29. Volatility of hydrides=
H2O < H2Te < H2Se < H2S

30. Reducing nature of hydrides=
H2S < H2Se < H2Te

31. Covalent character of hydrides=
H2O < H2S < H2Se < H2Te

32. The acidic character of oxides (elements in the same oxidation state)=
SO2 > SeO2 > TeO2 > PoO2
SO3 > SeO3 > TeO3

33. Acidic character of oxide of a particular element (e.g. S)=
SO < SO2 < SO3
SO2 > TeO2 > SeO2 > PoO2

34. Bond energy of halogens=
Cl2 > Br2 > F2 > I2

35. Solubility of halogen in water =
F2 > Cl2 > Br2 > I2

36. Oxidising power=
F2 > Cl2 > Br2 > I2

37. Enthalpy of hydration of X ion=
F- > Cl- > Br- >I-

38. Reactivity of halogens:=
F> Cl> Br > I

39. Ionic character of M-X bond in halides
= M-F > M-Cl > MBr > M-I

40. Reducing character of X ion:=
I- > Br- > Cl- > F-

41. Acidic strength of halogen acids=
HI > HBr > HCI > HF

42. Reducing property of hydrogen halides
= HF < HCL < HBr < HI

43. Oxidising power of oxides of chlorine
= Cl2O > ClO2 > Cl206 > Cl2O7

44. Decreasing ionic size=
02- > F- > Na+ > Mg2+

45. Increasing acidic property=
Na2O3 < MgO < ZnO< P205

46. Increasing bond length=
N2 <02 < F2 < CL2

47. Increasing size=
Ca2+ < Cl- < S2-

48. Increasing acid strength=
HClO < HClO2 < HClO3 < HClO4

49. Increasing oxidation number of iodine=
HI< I2
50. Increasing thermal stability=
HOCl < HOClO < HOClO2 < HOClO3 Open / Comment

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2021-12-09 13:36:26 𝗦𝗼𝗺𝗲 𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀

𝗖𝗘𝗟𝗟

𝗧𝗵𝗲 𝘄𝗼𝗿𝗱 𝗰𝗲𝗹𝗹 𝗰𝗮𝗺𝗲 𝗳𝗿𝗼𝗺 𝘁𝗵𝗲 𝗹𝗮𝘁𝗶𝗻 𝘄𝗼𝗿𝗱.
𝗔𝗻𝘀: 𝗖𝗲𝗹𝗹𝘂𝗹𝗮*

𝗔𝗹𝗹 𝗹𝗶𝘃𝗶𝗻𝗴 𝗼𝗿𝗴𝗮𝗻𝗶𝘀𝗺𝘀 𝗮𝗿𝗲 𝗺𝗮𝗱𝗲 𝘂𝗽 𝗼𝗳
𝗔𝗻𝘀: 𝗖𝗲𝗹𝗹*

𝗦𝘁𝘂𝗱𝘆 𝗼𝗳 𝗰𝗲𝗹𝗹 - *𝗖𝘆𝘁𝗼𝗹𝗼𝗴𝘆*

𝗦𝘁𝘂𝗱𝘆 𝗼𝗳 𝘁𝗶𝘀𝘀𝘂𝗲 - *𝗛𝗶𝘀𝘁𝗼𝗹𝗼𝗴𝘆*

𝗧𝗵𝗲 𝗽𝗵𝘆𝘀𝗶𝗰𝗮𝗹 𝘂𝗻𝗶𝘁 𝗼𝗳 𝗹𝗶𝗳𝗲
𝗔𝗻𝘀: 𝗣𝗿𝗼𝘁𝗼𝗽𝗹𝗮𝘀𝗺*

𝗪𝗵𝗼 𝗶𝗻𝘃𝗲𝗻𝘁𝗲𝗱 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗥𝗼𝗯𝗲𝗿𝘁 𝗛𝗼𝗼𝗸 𝗶𝗻 𝟭𝟲𝟲𝟱*

𝗖𝗲𝗹𝗹 𝘁𝗵𝗲𝗼𝗿𝘆 𝘄𝗮𝘀 𝗽𝗿𝗼𝗽𝗼𝘀𝗲𝗱 𝗯𝘆? 𝗔𝗻𝘀: 𝗠.𝗝. 𝗦𝗰𝗵𝗹𝗲𝗶𝗱𝗲𝗻 𝗮𝗻𝗱 𝗧𝗵𝗲𝗼𝗱𝗼𝗿 𝗦𝗰𝗵𝘄𝗮𝗻𝗻 (𝟭𝟴𝟯𝟵)*

𝗦𝗰𝗶𝗲𝗻𝘁𝗶𝘀𝘁 𝘄𝗵𝗼 𝗼𝗯𝘀𝗲𝗿𝘃𝗲𝗱 𝗰𝗼𝗿𝗸 𝗰𝗲𝗹𝗹𝘀 𝘂𝗻𝗱𝗲𝗿 𝗮 𝗺𝗶𝗰𝗿𝗼𝘀𝗰𝗼𝗽𝗲?
𝗔𝗻𝘀: 𝗥𝗼𝗯𝗲𝗿𝘁 𝗛𝗼𝗼𝗸*

𝗣𝗹𝗮𝗻𝘁 𝗰𝗲𝗹𝗹 𝘄𝗮𝘀 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝗲𝗱 𝗯𝘆?
𝗔𝗻𝘀: 𝗥𝗼𝗯𝗲𝗿𝘁 𝗛𝗼𝗼𝗸*

𝗧𝗵𝗲 𝘁𝗲𝗿𝗺 𝗽𝗿𝗼𝘁𝗼𝗽𝗹𝗮𝘀𝗺 𝘄𝗮𝘀 𝗰𝗼𝗶𝗻𝗲𝗱 𝗯𝘆 𝟯.𝗘. 𝗣𝘂𝗿𝗸𝗶𝗻𝗷𝗲 𝗦𝗰𝗶𝗲𝗻𝘁𝗶𝘀𝘁 𝘄𝗵𝗼 𝗰𝗮𝗹𝗹𝗲𝗱 𝗽𝗿𝗼𝘁𝗼𝗽𝗹𝗮𝘀𝗺 𝗮𝘀 𝘁𝗵𝗲 𝗽𝗵𝘆𝘀𝗶𝗰𝗮𝗹 𝗯𝗮𝘀𝗶𝘀 𝗼𝗳 𝗹𝗶𝗳𝗲 𝗧.𝗛. 𝗛𝘂𝘅𝗹𝗲𝘆

𝗟𝗮𝗿𝗴𝗲𝘀𝘁 𝗰𝗲𝗹𝗹
𝗔𝗻𝘀: 𝗢𝘀𝘁𝗿𝗶𝗰𝗵'𝘀 𝗲𝗴𝗴*

𝗦𝗺𝗮𝗹𝗹𝗲𝘀𝘁 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗠𝘆𝗰𝗼𝗽𝗹𝗮𝘀𝗺𝗮*

𝗢𝗿𝗴𝗮𝗻𝗶𝘀𝗺𝘀 𝗸𝗻𝗼𝘄𝗻 𝗮𝘀 𝗽𝗹𝗲𝘂𝗿𝗼 𝗽𝗻𝗲𝘂𝗺𝗼𝗻𝗶𝗮 𝗹𝗶𝗸𝗲 𝗼𝗿𝗴𝗮𝗻𝗶𝘀𝗺 (𝗣𝗣𝗟𝗢)?
𝗔𝗻𝘀: 𝗠𝘆𝗰𝗼𝗽𝗹𝗮𝘀𝗺𝗮*

𝗦𝗺𝗮𝗹𝗹𝗲𝘀𝘁 𝗰𝗲𝗹𝗹 𝗶𝗻 𝘁𝗵𝗲 𝗵𝘂𝗺𝗮𝗻 𝗯𝗼𝗱𝘆?
𝗔𝗻𝘀: 𝗦𝗽𝗲𝗿𝗺*

𝗟𝗮𝗿𝗴𝗲𝘀𝘁 𝗰𝗲𝗹𝗹 𝗶𝗻 𝗵𝘂𝗺𝗮𝗻 𝗯𝗼𝗱𝘆?
𝗔𝗻𝘀: 𝗢𝘃𝘂𝗺*

𝗟𝗼𝗻𝗴𝗲𝘀𝘁 𝗰𝗲𝗹𝗹 𝗶𝗻 𝗵𝘂𝗺𝗮𝗻 𝗯𝗼𝗱𝘆?
𝗔𝗻𝘀: 𝗡𝗲𝘂𝗿𝗼𝗻*

𝗣𝗼𝘄𝗲𝗿 𝗵𝗼𝘂𝘀𝗲 𝗼𝗳 𝗮 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗠𝗶𝘁𝗼𝗰𝗵𝗼𝗻𝗱𝗿𝗶𝗮*

𝗕𝗿𝗮𝗶𝗻 𝗼𝗳 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗡𝘂𝗰𝗹𝗲𝘂𝘀*

𝗞𝗶𝘁𝗰𝗵𝗲𝗻 𝗼𝗳 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗖𝗵𝗹𝗼𝗿𝗼𝗽𝗹𝗮𝘀𝘁*

𝗘𝗻𝗲𝗿𝗴𝘆 𝗖𝘂𝗿𝗿𝗲𝗻𝗰𝘆 𝗼𝗳 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗔𝗧𝗣*

𝗦𝘂𝗶𝗰𝗶𝗱𝗮𝗹 𝗯𝗮𝗴?
𝗔𝗻𝘀: 𝗟𝘆𝘀𝗼𝘀𝗼𝗺𝗲𝘀*

𝗧𝗿𝗮𝗳𝗳𝗶𝗰 𝗣𝗼𝗹𝗶𝗰𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗚𝗼𝗹𝗴𝗶𝗯𝗼𝗱𝗶𝗲𝘀*

𝗦𝗸𝗲𝗹𝗲𝘁𝗮𝗹 𝘀𝘆𝘀𝘁𝗲𝗺 𝗼𝗳 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗘𝗻𝗱𝗼𝗽𝗹𝗮𝘀𝗺𝗶𝗰 𝗿𝗲𝘁𝗶𝗰𝘂𝗹𝘂𝗺*

𝗧𝗵𝗲 𝗰𝗲𝗹𝗹 𝗵𝗮𝘃𝗶𝗻𝗴 𝗺𝗼𝘀𝘁 𝗹𝗶𝗳𝗲 𝘀𝗽𝗮𝗻 𝗶𝗻 𝗵𝘂𝗺𝗮𝗻 𝗯𝗼𝗱𝘆?
𝗔𝗻𝘀: 𝗥𝗕𝗖*

𝗖𝘆𝘁𝗼𝗽𝗹𝗮𝘀𝗺 𝗮𝗻𝗱 𝗡𝘂𝗰𝗹𝗲𝘂𝘀 𝗮𝗿𝗲 𝗶𝗻𝗰𝗹𝘂𝗱𝗲𝗱 𝗶𝗻?
𝗔𝗻𝘀: 𝗣𝗿𝗼𝘁𝗼𝗽𝗹𝗮𝘀𝗺*

𝗧𝗵𝗲 𝗰𝗲𝗹𝗹 𝗼𝗿𝗴𝗮𝗻𝗲𝗹𝗹𝗲 𝗸𝗻𝗼𝘄𝗻 𝗮𝘀 𝗽𝗿𝗼𝘁𝗲𝗶𝗻 𝗳𝗮𝗰𝘁𝗼𝗿𝘆?
𝗔𝗻𝘀: 𝗥𝗶𝗯𝗼𝘀𝗼𝗺𝗲*

𝗧𝗵𝗲 𝗼𝗿𝗴𝗮𝗻𝗲𝗹𝗹𝗲 𝗶𝗻 𝘁𝗵𝗲 𝘀𝗶𝘁𝗲 𝗼𝗳 𝗽𝗿𝗼𝘁𝗲𝗶𝗻 𝘀𝘆𝗻𝘁𝗵𝗲𝘀𝗶𝘀?
𝗔𝗻𝘀: 𝗥𝗶𝗯𝗼𝘀𝗼𝗺𝗲*

𝗥𝗶𝗯𝗼𝘀𝗼𝗺𝗲 𝗵𝗮𝘀 𝗶𝘁𝘀 𝗼𝘄𝗻?
𝗔𝗻𝘀: 𝗥𝗡𝗔*

𝗧𝘄𝗼 𝘁𝘆𝗽𝗲𝘀 𝗼𝗳 𝗮𝗰𝗶𝗱𝘀 𝗽𝗿𝗲𝘀𝗲𝗻𝘁 𝗶𝗻 𝗰𝗲𝗹𝗹?
𝗔𝗻𝘀: 𝗗𝗡𝗔 𝗮𝗻𝗱 𝗥𝗡𝗔*

𝗧𝗵𝗲 𝗯𝗮𝘀𝗶𝗰 𝘂𝗻𝗶𝘁 𝗼𝗳 𝗰𝗵𝗿𝗼𝗺𝗼𝘀𝗼𝗺𝗲?
𝗔𝗻𝘀: 𝗗𝗡𝗔*

𝗧𝗵𝗲 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹 𝘂𝗻𝗶𝘁 𝗼𝗳 𝗗𝗡𝗔?
𝗔𝗻𝘀: 𝗚𝗲𝗻𝗲𝘀*

𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻 𝗼𝗳 𝗗𝗡𝗔?
𝗔𝗻𝘀: 𝗧𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻 𝗼𝗳 𝗵𝗲𝗿𝗲𝗱𝗶𝘁𝗮𝗿𝘆 𝘁𝗿𝗮𝗶𝘁𝘀*

𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻 𝗼𝗳 𝗥𝗡𝗔?
𝗔𝗻𝘀: 𝗣𝗿𝗼𝘁𝗲𝗶𝗻 𝘀𝘆𝗻𝘁𝗵𝗲𝘀𝗶𝘀*

𝗘𝗮𝗰𝗵 𝗰𝗵𝗿𝗼𝗺𝗼𝘀𝗼𝗺𝗲 𝗵𝗮𝘀?
𝗔𝗻𝘀: 𝗔 𝗽𝗮𝗶𝗿 𝗼𝗳 𝗗𝗡𝗔*
𝗗𝗡𝗔 𝘀𝘂𝗴𝗮𝗿 𝗶𝘀 𝗰𝗮𝗹𝗹𝗲𝗱?
𝗔𝗻𝘀: 𝗗𝗲𝗼𝘅𝘆𝗿𝗶𝗯𝗼𝘀𝗲*

𝗧𝗵𝗲 𝗻𝗶𝘁𝗿𝗼𝗴𝗲𝗻 𝗯𝗮𝘀𝗲𝘀 𝗶𝗻 𝗗𝗡𝗔?
𝗔𝗻𝘀: 𝗔𝗱𝗲𝗻𝗶𝗻𝗲, 𝗚𝘂𝗮𝗻𝗶𝗻𝗲, 𝗧𝗵𝘆𝗺𝗶𝗻𝗲, 𝗖𝘆𝘁𝗼𝘀𝗶𝗻𝗲*

𝗧𝗵𝗲 𝗥𝗡𝗔 𝘀𝘂𝗴𝗮𝗿?
𝗔𝗻𝘀: 𝗥𝗶𝗯𝗼𝘀𝗲*

𝗧𝗵𝗲 𝗻𝗶𝘁𝗿𝗼𝗴𝗲𝗻 𝗯𝗮𝘀𝗲𝘀 𝗶𝗻 𝗥𝗡𝗔?
𝗔𝗻𝘀 : 𝗔𝗱𝗲𝗻𝗶𝗻𝗲, 𝗨𝗿𝗮𝗰𝗶𝗹, 𝗖𝘆𝘁𝗼𝘀𝗶𝗻𝗲 𝗮𝗻𝗱 𝗚𝘂𝗮𝗻𝗶𝗻𝗲*

𝗧𝗵𝗲 𝗱𝗼𝘂𝗯𝗹𝗲 𝗵𝗲𝗹𝗶𝗰𝗮𝗹 𝗺𝗼𝗱𝗲𝗹 𝗼𝗳 𝗗𝗡𝗔 𝘄𝗮𝘀 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝗲𝗱 𝗯𝘆?
𝗔𝗻𝘀: 𝗝𝗮𝗺𝗲𝘀 𝗪𝗮𝘁𝘀𝗼𝗻 𝗮𝗻𝗱 𝗙𝗿𝗮𝗻𝗰𝗶𝘀 𝗖𝗿𝗶𝗰𝗸*

𝗧𝗵𝗲 𝗲𝗻𝘇𝘆𝗺𝗲 𝗽𝗿𝗲𝘀𝗲𝗻𝘁 𝗶𝗻 𝗹𝘆𝘀𝗼𝘀𝗼𝗺𝗲?
𝗔𝗻𝘀: 𝗛𝘆𝗱𝗿𝗼𝗹𝘆𝘁𝗶𝗰 𝗲𝗻𝘇𝘆𝗺𝗲*

𝗟𝘆𝘀𝗼𝘀𝗼𝗺𝗲 𝘄𝗮𝘀 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝗲𝗱 𝗯𝘆?
𝗔𝗻𝘀: 𝗖𝗵𝗿𝗶𝘀𝘁𝗶𝗼𝗻 𝗱𝗲 𝗗𝘂𝘃𝗲 (𝟭𝟵𝟱𝟱)*

𝗖𝗼𝗺𝗽𝗼𝘂𝗻𝗱𝘀 𝗲𝗻𝘁𝗲𝗿 𝘁𝗵𝗲 𝗰𝗲𝗹𝗹 𝘁𝗵𝗿𝗼𝘂𝗴𝗵?
𝗔𝗻𝘀: 𝗘𝗻𝗱𝗼𝗽𝗹𝗮𝘀𝗺𝗶𝗰 𝗿𝗲𝘁𝗶𝗰𝘂𝗹𝘂𝗺* Open / Comment

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Link: https://bit.ly/3sBSBtp Open / Comment

2021-12-07 16:07:38 BIӨDIVΣЯƧƬIY ΛПD ᄃӨПƧΣЯVΛƬIӨП

𝐐𝐔𝐈𝐂𝐊 𝐑𝐄𝐕𝐈𝐒𝐈𝐎𝐍 𝐍𝐎𝐓𝐄𝐒
There are about 20,000 species of ants, 3,00,000 species of beetles, 28,000 species of fishes & 20,000 species of orchids

Term biodiversity was popularised by Edward wilson

India has 50,000 genetically different strains of rice and 1000 varieties of mango

Acc to IUCN (2004), No.of species discovered and described range about 1.5 million

Robert may estimate - total no.of species is around 7 million

More than 70% of species discovered are animals

More than 70% of animals are insects

Plants constitute not more than 22% of total species

Total no.of species of fungi is more than combined total of fishes, amphibians, reptiles and mammals

India occupy 2.4% of total land surface but they contribute 8.1% of total biodiversity

There are about 45,000 species of plants and twice as many animals are discovered in india

Acc to robert estimate...only 22% of total no.of species have been discovered


There are 1,00,000 plant species and more than 3,00,000 animals species are yet to be discovered in india

Columbia has 1400 species of birds...newyork - 105 species of birds, Greenland - 56 species

India has 1200 species of birds Amazonian rain forest in south

america has 1300 species of birds, 40000 species of plants, 427 amphibians, 427 mammals, 378 reptiles, more thab 1,25,000 invertebrates

The colonisation of tropical pacific island by humans has led to the extinction of 2000 species of native birds

Over 784 species have extincted in past 500 years ( 359 invertebrates, 338 vertebrates & 87 plants )

In last 20 years, 27 species disappeared

Around 15,500 species are facing threat of extinction

32% amphibians, 31% gymnosperms, 23% mammals, & 12% birds are facing threat of extinction Open / Comment

2021-12-07 14:56:32 Make your study mUcH Easier and More Organised


Telegram channel - https://t.me/sakshi_neet Open / Comment