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Show the sequence of secondary growth by drawing the row of cells from the boxed area below and labeling the vascular cambium cell (V), 5 xylem cells from oldest (X1) to youngest (X5), and 3 phloem cells (P1 to P3). Show what happens after growth continues by drawing and labeling a row with twice as many xylem and phloem cells. How does the vascular cambium’s location change?
A pear has a hard texture but juicy. State two cells that give the characteristics?
State the function of the transitional epithelium found in the mammalian urinogenital system.
(i) Identify type of tissue lines the air sacs of the lungs.
(ii) Explain how the tissue named in (i) adapted to its function.
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- Below 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, collenchymaIn a microscopic field of Allium cepa root tip, how many number of cells undergo prophase, metaphase, anaphase, and telophase?Below 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 Pro
- Label the following structure/s: (Figure 2) Potato tuber cells with starch grains, label the parenchyma cells.Tissues in a carrot root, make a simple sketch and label the tissues. The outermost covering of the cylinder( the skin of the carrot root) is made up of dermal tissue, particularly the periderm. Beneath the periderm is a layer called the cortex which is made up of parenchyma, a type of ground tissue. Underneath the cortex is vascular cylinder which contains the ploem(the outer layer of the cylinder) and the xylem (the central core of the cylinder, the lightly colored part). Between the ploem and the xylem where the vascular cambium is located (a layer that is only one cell thick) a lateral meristematic tissue. plsssss help me sketch this and label it, thank you.Secondary growth in stems involves two meristems. Identify and describe these two meristems, explain what tissues they are responsible for producing (including their functions), and explain the direction of cell division in which those tissues are produced in relation to the epidermis. For the last part of this question referring to the direction of cell division, make sure to address why cell division is occurring in two different planes. Also, as part of your answer, name and explain the functions of the tissues from the center of the stem to the dermal layer, in order, for a stem conducting secondary growth.
- Below is a series of pictures of the stem (x.s.) of a corn, Zea mays. 40x (x.s.) 100x (x.s.) Make a sketch of both magnifications (40x and 100x) and upload it here with the following structures labeled: epidermis, sclerenchyma (fibers), ground tissue parenchyma, vascular bundles, phloem, xylem, sieve tube members, companion cells, vessel elements, tracheidstwo leaves A and B, each having the petiole in a closed test tube full of water. Each is hung on a spring balance. Leaf A has a waxy cuticle on the upper epidermis and stomata on the lower epidermis. Leaf B a waxy cuticle on the upper epidermis and a lower epidermis covered with petroleum jelly. Both leaves were cut from the same plant. i)Explain why it is important for the leaves to be cut from the same plant. (ii) List TWO variabes that must be kept constant in this investigation. iii) Table 6 shows the results obtained in the experiment: leaf and test tube weight final weight change in weight A 40.7 39.9 0.8 B 38.7 38.7 0.0 Explain why the weight of set up A, decreased. iv) Using your biological knowledge, indicate how results will change, if a fan is switched on near the experimental set up. Explain your answer.Look at As shown. Part (A) shows the lower half of a fusiform initial (actually most fusiform initials would be much taller than this), and part (B) shows the same cell after it has divided and one of the daughter cells is developing into a xylem cell. Did the fusiform initial divide with a periclinal wall or an anticlinal wall as it went from part a to part b? Part (D) shows that the same fusiform initial has now produced a second cell that is developing into a phloem cell. Was that phloem cell produced by a periclinal or an anticlinal division of the fusiform initial? Part (F) shows the fusiform initial dividing and forming a second fusiform initial. Is this division occurring by a periclinal wall or an anticlinal wall?
- Indicate the phase of growth of each of the followinghairs:a. The root is club-shapedb. The hair has a follicular tagc. The root bulb is flame-shapedd. The root is elongatedThe image above shows a cross-section through a portion of the root of Phalaenopsis sp. stained with Toluidine Blue pH 4.4. Select the correct match to identify the items indicated. phloem tissue 1. 1 endodermis 2. 2 pericycle 3. 3 sieve tube 4. 4 passage cell 5. 5 6 6 xylem vessel 7. 7 xylem tissue 8. 8 companion cellLook at as shown. The top three rows are labeled “Primary growth” because these are found in the primary plant body, the body of an herb. The third row of the figure has five boxes with the five types of mature tissue found in the primary plant body. What are the five tissues?