Concept explainers
To explain: The orientation of leaf works best in bright sunny conditions and low lightlevels.
Introduction: A leaf is a flat lateral structure and generally green in color that protrudes from the stem of plants to collect the sunlight for the process of photosynthesis. The leaf is the region where transpiration occurs. Thus, the leaf is an absolutely significant portion of any vascular plant for the processes of photosynthesis and transpiration.
Explanation of Solution
The leaves in plants are not at the same angle to the sunlight. Some of the leaves are vertical and some are horizontal and some found in between. The orientation of the leaf in some species of plant is altered throughout the day. The vertical orientation of the leaf works best in the bright sunny conditions because it would shield the leaves from extremely high intensity of light. It permits the sunlight to enter the leaves that are found in lower levels. The horizontal leaf orientation works best at the low intensities of light. The sunlight exposure is maximized by the horizontal orientation of the leaf.
To explain: The greater productivity in the low leaf area index or high leaf area index.
Explanation of Solution
Leaf depth layer in the community of plant will affect productivity. The leaf area index is defined as the total region ratio of the top surface of the leaves to the region of the ground, which is covered by a crop or a plant. The productivity of the plant rises with an increasing leaf area index as extra as areas of the leaf is obtainable to capture sunlight. When the leaf area index is too deep or high, then both leaves and lower branches are also shaped to the process of photosynthesizing. The plants with nonproductive lower leaves may die by the process called as self-pruning.
To explain: The physiology change and roots branching in response to the patches of nutrients such as nitrate.
Explanation of Solution
The roots are one of the organs present in the vascular plants, which generally lie below the soil surface. In roots, the branching pattern can give rise to take benefits of the local nitrate availability. Thus, it can help in the generation of nutrient transporters inside the cells of roots.
Want to see more full solutions like this?
Chapter 36 Solutions
Study Guide for Campbell Biology
- The Casparian strip allows the root to control what solutes enter the xylem. How does it do that?arrow_forwardVernalization is a plant response to: Light Gravity Physical contact None of the above Plant epidermis secretes a waterproof substance called: Cuticle Wax Periderm covering Pectin Plant transpiration accounts for what % of atmospheric water vapor? 50% 90% 5% 75%arrow_forwardA 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_forward
- Discuss which pathway permits the passage of most solutes and water inside the roots? Which pathway allows the entry of most of the water and some of the solutes inside the root tissue? Explain how the Casparian strip creates a barrier for substance moving through this pathway and how it is circumvented.arrow_forwardCorrectly label the following structures of a plant root tip. Place your cursor on the labels for more information. Vascular cylinder Zone of maturation Xylem Epidermis Protoderm Phloem Root hair Procambium Endodermis Cortex Zone of elongation Root cap Roof apical meristem Ground meristem Pericycle IM(4) 100 Reset Zoomarrow_forwardUnlike the movement of water in the xylem, phloem sap movement is not defined by gravity. It can move upward and downward in the plant. During very hot weather, when the plant root is converting sugar to store as starch, state the role of root and leaves. Tidak seperti pergerakan air di dalam xilem, pergerakan sap floem tidak ditentukan oleh graviti. la boleh bergerak ke atas dan ke bawah dli dalam tumbuhan. Semasa cuaca sangat panas, apabila akar tanaman menukar gula untuk disimpan kanji, kenal pasti peranan akar dan daun. Source Punca: Sink Sinki:arrow_forward
- Figure 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_forwardYour scheduled patrolling of com field has collected various leaves samples with symptoms stated as below. Use these symptoms to explain about the type of nutrient deficiency to your worker. (i) Burning of leaf tip and edge. (ii) Reddish purple leaf edge on lower leaves. (iii) Interveinal chlorosis. (iv) Wrinkled and unopened leaf. (v) Some of the nutrient deficiency symptoms were ohserved on new growth but some were observed at the lower leaves. How would you explain this phenomenon to your worker? (vi) What are the field guides to distinguish between biotic and abiotic causes of leaf abnormalities?arrow_forwardFrom an image of transverse slides of primary and secondary dicot roots on demonstration, determine from what tissues does the vascular cambium and cork cambium arise?arrow_forward
- Please only provide the solution of the following as quick as possible:arrow_forwardBelow is a series of pictures of monocot a leaf (x.s.), Zea mays. 40x (x.s.) Make a sketch of the 40x leaf cross section and upload it here with the following structures labeled: upper epidermis, bulliform cells (large cells on upper leaf surface), stomate, guard cells, mesophyll, xylem, phloem, bundle sheath cells, lower epidermis MacBook Proarrow_forwardBelow is a series of pictures of a leaf (x.s.) from a eudicot, Syringa vulgaris. 40x (x.s.) Make a sketch of the 40x leaf cross section and upload it here with the following structures labeled: upper epidermis, cuticle, stomata, guard cells, mesophyll (palisade and spongy), veins (xylem and phloem), bundle sheath, collenchyma cells, lower epidermis MacBook Proarrow_forward
- Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax