In many plants, stomata are found only on thee lower surface of the leaf. During the day if a plant has enough water In Figure 23-4, the water pressure in theĪ. Which letters indicate cells in which a large number of chloroplasts would likely be found? Exposing a greater surface area to capture energy from sunlight The flat structure of a leaf blade enables its function as a photosynthetic organ byĭ.

Most of the photosynthesis in plants takes place in the Oxygen and carbon dioxide move in and out of a leaf through the Old xylem that is no longer conducting water Which of the following describes the heartwood of a tree?ī. In large trees, the support function of stems is primarily due to One function of stems is to physically support leaves in a position to maximize photosynthesis. What function of leaves is taken on my the stems of such cacti? Many cacti, such as saguaros and barrel cacti, have large stems but no leaves. Is continuous from the roots to the leaves Is produced in the vascular cylinder by active transportī. through which cells did the radioactive phosphorus travel to the vascular cylinder?ĭ. Several hours later, radiation was detected in its stems. The soil around a lilac bush was watered with a solution containing radioactive phosphorus. There is a one-way movement of water and minerals from the cortex into the vascular cylinder of a root because Mineral nutrients from the soil move into roots by The root cap is a tough structure that protects the The layer of cells that encloses the vascular tissue in the central region of a root is the In Figure 23-2, what letter indicates the tissue in which the products of photosynthesis are stored?ĭamage to which area of the root shown in Figure 23-2 will prevent the root from growing longer?

Which of the following are areas of unspecialized cells in which mitosis produces new cells that are ready for differentiation? To observe mitosis, which of the following should a student examine under a compound microscope? How would damage to structure B affect structure A?Ī. If some of the xylem of a young oak tree were destroyed, it would most likely interfere with the tree’s ability to In angiosperms, xylem consists of tracheids and In most plants, which organs are adapted to capture sunlight for photosynthesis? A seed plant is held in the ground by its

Biology chapter 22 test