The leaves of a plant typically have different tissue layers that function in different ways. The epidermis layer functions like a covering of skin to protect the leaf while vascular bundles carry water and nutrients through the leaf. The palisade mesophyll layer is responsible for most of the photosynthesis that occurs while the spongy mesophyll layer underneath it aids in the exchange of gases (CO2 and O2) and water vapor. In which leaf tissues would you expect to find the highest density of chloroplasts?

a. epidermis
b. vascular bundles
c. spongy mesophyll
d. palisade mesophyll


Ans: d. palisade mesophyll

Biology & Microbiology

You might also like to view...

The most important natural auxin is ____ acid

a. abscisic b. gibberellic c. jasmonic d. indoleacetic e. salicylic

Biology & Microbiology

The first group of plants with flowers were:

a. algae b. fern allies c. ferns d. angiosperms e. gymnosperms

Biology & Microbiology

Which of the following is FALSE?

a. The outer coats of all viruses have the same protein structure. b. The virus uses either DNA or RNA at its core but not both. c. Viruses can be replicated only after they enter a living cell. d. Most viruses have a protein coat or covering. e. A virus may remain latent for a period of time before causing infection.

Biology & Microbiology

You are talking to a 54-year-old patient who has joint pain. As the attending physician, you order a scan to look at the cartilage in the patient's painful joints because you suspect that cartilage has worn away, leading to

A. acromegaly. B. rheumatoid arthritis. C. scoliosis. D. osteoporosis. E. osteoarthritis.

Biology & Microbiology