1. Fastest growing plant   Ferns   Palm   Banyan   Coconut   Bamboo   Hint Half-n-half Clue   2. Smallest bird   Sparrow   Hummingbird   Kiwi   Kittiwake   Kingfisher   Half-n-half Clue   3. Largest muscle in the human body   Calf Muscles   Stapedius   Cardiac Muscles   Sartorious   Gluteus Maximus   Half-n-half Clue   4. Fastest flying bird   Eagle   Kite   Kingfisher   Seagull   Peregrine Falcon   Half-n-half Clue   5. Fastest fish   Eel   Swordfish   Bluefin Tuna   Shark   Cosmopolitan Sailfish   Half-n-half Clue   6. Most common blood group in humans   A +   O   B +   AB -   A -   Half-n-half Clue   7. Largest carnivore on land   Panther   Lion   Polar Bear   Leopard   Tiger   Half-n-half Clue