| Mangrove is a Salt tolerant plant; Grows in tropical and sub-tropical inter tidal region with rainfall between 1000-3000 mm and temperature ranging between\[26-35{}^\circ \,\,C\]. Choose the correct statements regarding mangrove, which are given below. |
| 1. In India, overall mangrove cover decreased but increased in the most industrial state Gujarat. |
| 2. Mangrove in India account for about 3% of world's mangrove vegetation. |
| 3. Mangrove forest are regarded as the most productive wetland in the world on account of the large quantities of organic and inorganic nutrients released in the coastal waters by these ecosystem. |
| 4. Pneumatophores, stilt roots and vivipary are not mangrove adaptation. |
| Select the correct answer using the codes given below. |
A) 1, 2 and 3
B) 2, 3 and 4
C) 1 and 3
D) All of these
Correct Answer: A
Solution :
[a] Statements 1, 2 and 3 are correct. Statement 4 is incorrect, preumatophores = Aerial roots above ground plant can breathe, air in water logged condition. Stilt roots = below water/land, they up hold the mangrove against side, strong wind and tropical cyclone. Vivipary = instead of germinating extremely from a seed, mangrove reproduce via 0buds (embryos) Preumatophores, stilt roots and vivipary all are mangrove adaptation.
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