When comparing vessel elements with sieve tube elements, only vessel elements. Select one: a. are stacked end to end. b. None of the choices. c. are present in all plant organs. d. transport substances through the plant. e. are not living.
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When comparing vessel elements with sieve tube elements, only vessel elements.
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- Which one of the following statements about root hairs is CORRECT? Select one: a. They are found in the zone of cell elongation and help the root to fix nitrogen. b.They are found in the root cap and help the root sense gravity. c.They are found in the zone of cell division of the root and help anchor the plant in the soil. d.They are found in the root apical meristem and help the root to absorb water. e.They are found in the zone of cell differentiation in the root. Which of the following best describes the route to fruit formation in flowering plants? Select one: a. 1) pollination, 2) double fertilization, 3) embryo develops, 4) ovary matures, 5) ovule matures. b. 1) pollination, 2) germination of pollen, 3) endosperm develops, 4) ovule develops. c. 1) pollination, 2) endosperm develops, 3) embryo develops, 4) ovule matures. d. 1) pollination, 2) fertilization, 3) embryo develops, 4) ovary matures. e.1) pollination, 2) fertilization, 3) germination of pollen, 4) ovule…These plant cells are are distinctive for having thickened corners of the cells when examined as a cross-section: Select one: a. Collenchyma b. Sclerenchyma c. Parenchyma d. Fibers e. ScleridsWhich of the following statements about gravity perception is FALSE? A. Statoliths are specialized amyloplasts B. Statoliths are found in statocytes C. Gravity is sensed from the root cap acropetally through the zone of division D. Columella cells sense gravity through statolith pressure on the endoplasmic reticulum E. Auxin is the main hormone involved in gravity response
- Water movement through the xylem needs less pressure than movement through living cells. A. Agree, because water moves in xylem through diffusion. B. Disagree, because water needs turgor pressure in order to diffuse. D. Disagree, beacuse both need equal pressure for materials to pass through xylem and living cells like sievetubes. C. Agree, because water is non-living while photosynthates are living and must pass through living cells that require pressure.Water movement through cell walls is a. apoplastic. b. symplastic. c. Both a and b are correct. d. Neither a nor b is correct.Determine the collective true-false status of the statements using the choices below. I. Xylem consists of cells called sieve elements and their associated companion cells.; II. Both sieve elements and the associated companion cells are alive in mature tissue.; III. Companion cells are a type of collenchyma.; IV. A companion cell provides each sieve element with metabolic support and transfers sugars into it. Only two (2) statements are true. None of the statements is true. All statements are true. Only one (1) statement is true. Only three (3) statements are true.
- A: ESTUARY B: TRIBUTARY C: RIVER BASIN 4. WATER HAS THE PROPERTY OF ADHESION, WHICH ALLOWS IT TO USE WHICH PROCESS IN PLANT ROOTS? A: DENSITY B: SURFACE TENSION C: CAPILLARY ACTIONIdentify and indicate each plant's specialized function. The following are the available choices. Choices can be repeated and answers can be two or more. Just write the letter with the correct answers. A. Reproduction (plantlets or buds may grow along with blades and petioles' notches, bases, apices, and tips.) B. Aeration (Increase petiole size to increase buoyancy) C. Support (As in the banana plant, the presence of tendrils, hooks, and supporting leaf bases.) D. Protection (Bud scales, motile leaves, spines, stipules, and bracts are all present.) E. Water storage (This is particularly important in desert plants with succulent leaves that store water in their large, thin-walled parenchyma cells. Certain plants, such as onions and lilies, store food in their leaves.) F. Attraction (Some plants have petaloid flower bracts or brightly variegated leaves.) G. Absorption (Insectivorous leaves, particularly unscrutinized leaves on some aquatic plants.) 1. Cadena de amor: 2. Rose: 3.…The formation of an air bubble in the xylem is called a. agitation. b. cohesion. c. adhesion. d. cavitation.
- Name the 2 major vascular tissues in plants and animals (and what is transported in each) Plants a. Xylcm b. Phloem Animals a. blood vessels b. ymphaticsWhich of the following statements about age gradients within the plant body is FALSE? Select one: a. Age gradients within the plant body include an apical-basal gradient where the youngest cells are near the apices (tips of shoots and roots). b. Age gradients within the plant body reflect the plant cells’ lack of mobility due to their shared walls. c. Phloem is oldest toward the outermost cell layers of the tree trunk and xylem is oldest toward the innermost cell layers of a tree trunk. d. All of the statements are true. e. Age gradients within the plant cells include walls that are youngest immediately adjacent to the plasma membrane and progressively older toward the middle lamella.Determine the collective true-false status of the statements using the choices below. I. All plant tissue arises from the activity of meristems. Meristems are analogous to stem cells in animals.; II. Primary growth arises at lateral meristems in the tips of young shoots and roots.; III. Secondary growth arises at apical meristems in older stems and roots.; IV. Vascular cambium produces secondary xylem (wood) on its inner surface, and secondary phloem on its outer surface. Cork cambium gives rise to cork, which is part of periderm. All statements are true. Only one (1) statement is true. Only two (2) statements are true. None of the statements is true. Only three (3) statements are true.