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- Vascular plants evolved to have the apomorphic characteristics that enabled them to grow with greater height and thrive with efficiency in sustaining more complex structures. Select one: O True O False The sporophyte structure in vascular plants is dependent on the gametophyte structure. Select one: True False The presence of lignin in the secondary cell wall structure of vascular plants acts as a cementing agent between cellulose fibrils. Select one: True FalseDetermine the collective true-false status of the statements using the choices below. I. Unlike a bulb, a corm is solid rather than layered, and it has nodes.; II. Potato has a modified stem known as tubers.; III. Turmeric and gingers have rhizomes.; IV. Stem tubers do have a basal plate. None of the statements is true. All statements are true. Only three (3) statements are true. Only two (2) statements are true. Only one (1) statement is true.Match the following plant cells and tissues with their definition: - v Collenchyma A. grouped in strands and help support young parts of the plant shoot. They have unevenly thickened primary cell walls. - v Sugar-conducting cells of the phloem B. are alive at maturity, but lack organelles. Each sieve-tube element is connected to a companion cell by plasmodesmata. Water-conducting cells of the xyleem v Sclerenchyma C. The two types of water-conducting cells, tracheids and vessel elements, are dead and lignified at maturity. - v Parenchyma D. rigid due to thick secondary walls containing lignin, dead at functional maturity and play a role in support in the plant. E. cells are flexible and provide the most diversity of functions (such as photosynthesis)
- Answer the following question: Before today would you have referred to the uncracked sunflower achene as a fruit? Why or why not? Is sunflower a monocot or eudicot?Your class is studying the burrs – the seed pods – of the common burdock plant. Your lab partner notices that the burrs easily cling to clothing, as well as to each other, and that some of the spines have come loose and gotten stuck in her skin, which is somewhat painful. Based on these observations, is there a logical explanation, other than reproductive success, for why the seed might have this special structure? (a) Yes, the structure may help the seed cling to the soil so that it can take root more easily (b) yes, these structures may prevent the seeds from getting damaged or eaten by other animals (c) yes, the structures may help prevent the seeds from getting pulled from the plant by sticking to each other (d) No, they are obviously intended to attach to animals so that they can be carried and dropped elsewherea. Describe the function of plant roots. b) Describe the function of plant shoots. c)What is the function of lignin in terrestrial plants? d)What are xylem and phloem and how do they differ? e)Exactly what is pollen? f)Exacly what is a seed?
- Below 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 ProBelow is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. E- young 100x (x.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchymaWhich pairing below can be distinguished by the following description: "fruit formed from a single flower with many ovaries versus a fruit formed from the fusion of many flowers" O achene versus a samara O aggregate fruit versus a multiple fruit O filament versus a legume O pome versus a pep0 MacBook Pro G Search or type URL # 2$ 1 2 3 4 < CO
- i) list TWO adaptations that show that the plant conserves water.ii) Photosynthetic cells produce starch and may be stored. Describe how one may test for the presence of starch on a piece of potato tissue. iii) Give TWO characteristics of monocotyledonous plants. d. The transition of plants from an aquatic environment to a terrestrial one has broughtabout many evolutionary adaptations for plants to survive on land. Give ONE adaptationfor each of the following divisions:i) Mosses: ii) Gymnosperms.Answer the following questions: How many carpels are fused to form an apple? How might the fleshy pericarp aid in seed dispersal? How many carpels are fused to form a tomato?In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microspores