Refer to the following choices to answer Questions 1-4. Match each plant cell type with its description. Each cell type may be used once, more than once, or not at all.

a) parenchyma b) collenchyma c) tracheids d) sieve tube cells

1. cells with lignified cell walls that function in support and water transport
2. living cells that transport sugars and other organic nutrients
3. living plant cells which serve in photosynthesis, metabolism and storage
4. cells that serve as support for growing (still-elongating) parts of the plant