In a leaf, dermal tissue

a) stores food

b) stores carbon dioxide

c) releases oxygen into the air

d) transports water from the roots

C) releases oxygen into the air

Explanation:

Stomata are the minute openings present in the epidermis of leaves. Plant open stomata to take in carbon dioxide gas from the air which in turn is fixed into organic compounds during the process of photosynthesis. Oxygen gas is the by-product of photosynthesis. Plants release oxygen from stomata into the air. Therefore, dermal tissues in leaves have stomata and one of their functions is to release oxygen into the air.

releases oxygen into the air

Explanation:

Plants release water into the air through a process called transpiration. The cuticle helps keep the plant from losing too much water. The cuticle also prevents the plant from absorbing much water through its leaves or stems. Since plant roots need to absorb water and nutrients from the soil, their dermal tissue does not have a cuticle.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.