परमाफ्रॉस्ट (प्रतिवर्ष हिमीकृत भूमि), मिट्टी की एक परत जो कम से कम दो वर्षों तक लगातार पूरी तरह से जमी रहती है, किस बायोम की एक प्रमुख विशेषता है?

Consider the following statements about the Tundra biome: (i) There are two types of Tundra biome - arctic and alpine. (ii) The Tundra biome is usually treeless. (iii) Tall grasses are common in Tundra biome. (iv) Reptiles and amphibians are almost absent in Tundra biome. Which of the above statements about the Tundra biome are correct?

Consider the following statements about the Tundra biome: (i) There are two types of Tundra biome - arctic and alpine. (ii) The Tundra biome is usually treeless. (iii) Tall grasses are common in Tundra biome. (iv) Reptiles and amphibians are almost absent in Tundra biome. Which of the statements given above are correct?