1. A group of cells performing a specific function constitute a tissue.   True   False   2. The _______ color of flowers and fruits is due to the presence of the xanthophyll pigment.   violet   green   blue   yellow   Hint Half-n-half Clue   3. The network of convoluted tubules is called the _______.   endoplasmic reticulum   mitochondrion   microtubule   golgi apparatus   Half-n-half Clue   4. _______ consist of enzymes, which help in digestion.   Plastids   Lysosomes   Ribosomes   Centrosomes   Half-n-half Clue   5. The outermost covering of the plant cell is known as the cell membrane.   True   False   6. The lowest level of organization is the _______.   organism   organ   tissue   cell   Half-n-half Clue   7. The green color of leaves is due to the presence of the _______ pigment.   xanthophyll   chlorophyll   carotene   anthocyanin   Half-n-half Clue