Concept explainers
To discuss:
The formation of primary meristem near the ground surface in grasses and the growing of a lawn and mowing it every week in the summer.
Introduction:
The meristematic tissues are the tissues that possess the maximum ability for growth and regeneration. These small cells grow quickly and in addition exhibit dense cytoplasm.
To describe:
The results after the mowing of the dicot lawn.
Introduction:
The
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Biology
- leaves fall off when growers place plastic sleeves to cover the plant because of poor circulation and the lack of oxygen causes the plants not to breathe. Even though, the sleeves are a temporary fit for transport and shipping, what other items do you think the growers can use instead of the plastic sleeves to help?arrow_forwardA cross-section of a root is shown in the diagram. Xylem Cortex Phloem Epidermis The labeled structures are classified as which of the following? Cells, because each structure consists of only one type of cell Tissues, because each structure is used for a specific function Organs, because each structure functions independently of the others Organisms, because these structures perform in an interconnected processarrow_forwardWhich of the following slides should be focused on the microscope if you want to observe primary xylem and primary phloem tissues? a cross-section of an old acacia stemb epidermal section of a leafc cross-section of a monocot stemd L-section of the onion root tiparrow_forward
- Engineers have designed a smaller version of such a container that can be used to seal off a small part of the plant. One version of this device, called a leaf chamber, is shown below. When a scientist uses this device on a plant, they don’t need to break the leaves off the branch or stem they are attached to. The leaf chamber makes an airtight seal around the stem or branch even though it is sticking out of the chamber. Using this device, scientists detected the most change in O2 and CO2 levels inside the chamber when a leaf is in the chamber. They only detected a small change in O2 and CO2 levels in the chamber when a green stem was placed in the chamber. No change was detected when a root or a brown stem was placed in the chamber. Why do you think a scientist would prefer not to remove the leaves from a tree or a plant in order to take these sorts of measurements?arrow_forwardWhy does a layer of periderm offer only temporary protection? When the plant makes a new layer of cork cambium, does it make the new layer to the outer side of the failing periderm or to the inner side of it, deeper in thesecondary phloem?arrow_forwardThe part of the plant where cell division and growth is occurring is called the Question 21 options: Xylem Phloem Rhizoids Apical Meristemarrow_forward
- A Vhet do we call the structures found on the root epidermis that increase the plant's capacity absorb water? d) Briefly explain how the structures you mentioned in c) increase the plant's capacity to absort water. e) Complete the table below: Transport method for water Transport method for (passive / active?) Root Tissue minerals (passive/activ Epidermis: Active Cortex: Active Endodermis: Active Xylem:arrow_forwardGrowers often wrap potted plants in plastic sleeves prior to shipping. If plants remain in these sleeves too long, their leaves curl and fall off. Imagine you are working at a garden center and have been asked to make a presentation to a local garden club. how can growers avoid problems for example when it comes to plastic sleeves how can we fix itarrow_forwardHow does acid rain lead to a reduction in the amount of plant nutrients available in soil? O Cation exchange leads to covalent bonding of nutrients on soil particles, making them unavailable to plants. O Nutrient cations (like K*, Ca++ etc) bind in place of protons released by soil particles, making the nutrients unavailable and the soil water more acidic. O Cations exchange places with anions during cation exchange, which confuses roots and turns LATS into HATS, after which the endodermis generates a caspian endothelium O During acid rain nutrients leach away after cation exchange takes placearrow_forward
- How are sugars transported in phloem? the formation of starch from sugar in the sink increases the osmotic concentration high turgor pressure in source sieve-tube elements pushes phloem sap to sink sieve-tube elements with low turgor pressure water is actively transported into the source region of the phloem to create the turgor pressure needed the combination of a high turgor pressure in the source and transpiration water loss from the sink moves solutes through phloem conduitsarrow_forwardFigure 30.34 Which of the following statements is false? Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the xylem. Transpiration draws water from the leaf. Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the phloem. Transpiration draws water from the leaf. Water potential decreases from the roots to the top of the plant. Water enters the plants through root hairs and exits through stoma.arrow_forwardGround tissue in monocot stems performs the same functions as _______________ and _______________ in herbaceous eudicot stems. (a) phloem; xylem (b) cork cambium; vascular cambium (c) epidermis; periderm (d) primary xylem; secondary xylem (e) cortex; pitharrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax