1. 'Lac' is a plant product.   True   False   2. Nitrogen-fixing bacterium   Rhizobium   Lactobacillus   Salmonella   Clostridium   Hint Half-n-half Clue   3. In atom bomb explosion, _______ energy is primarily converted into _______ energy.   chemical, atomic   atomic, heat   chemical, light   atomic, sound   Half-n-half Clue   4. The property of plants to manufacture their food is known as _______.   Phototropism   Autotrophism   Phototaxis   Photokinesis   Half-n-half Clue   5. Which is not a 'biotic part' of the ecosystem ?   Water   Plants   Bacteria   Insects   Half-n-half Clue   6. Interaction between organisms of different species so as to get benefit from each other is known as   Symbiosis   Saprophytism   Etiolation   Predation   Half-n-half Clue   7. When water is boiled, it is converted into steam. This is an example of conversion of _______ energy to mechanical energy.   Atomic   Light   Chemical   Heat   Half-n-half Clue