Chrysanthemums are short-day plants that flower in fall. What cue(s) is important in this process? short days а. night-time temperatures near freezing b. both short days and long nights O d. long nights
Q: Thigmotropism is a plant response toa. light. b. cold.c. touch. d. gravity. e. drought.
A: Answer is c.) touch.
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A: following are the advantages that seedless plants in demand , industry, economy
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A: Small organic compounds which are active in low concentrations and promote/inhibit growth and…
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A: Introduction :- A pollinator is anything that helps carry pollen from the male part of the flower…
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A: Out of all the given options, Option (a) Embryo, Option (b) Xylem and Phloem, Option (c) Woods and…
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A: Introduction The nonliving things present in the ecosystem make the abiotic components.…
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A: Phloem tissue: [Vascular plants] The vascular tissue in charge of transport and…
Q: Match the response with its main trigger. ___ phototropism a. contact with an object…
A: phototropism - blue light gravitropism - gravity thigmotropism - contact with an object
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A: Ans: Latitude: It is the distance north or south from the equator.
Q: A student exposed two groups of a plant to two different photoperiods - a) one with 14 hours of I…
A: Ans- A The plants are short-night plants.
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A: Flowers in angiosperms provide protection to the reproductive parts of a flower, seeds, and ovule.
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A: Answer is d .) Sieve-tube members.
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A: Plants are eukaryotic, multicellular organism that differ from animals on the basis of presence of…
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A: What is spermology.
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A: Plant is an eukaryotic organism. They have cell wall in plant cell.
Q: Spermology is the study of: A) Seed B) Leaf C) Fruit D) Pollen grain
A: Plants are multicellular organisms that belong to the phylum of plantae. They originate from…
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Q: d) None of these The external agents which help in pollination are called
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- Given that (a) xylem is located toward the upper epidermis in leaf veins and phloem is located toward the lower epidermis and (b) the vascular tissue of a leaf is continuous with that of the stem, suggest one possible arrangement of vascular tissues in the stem that might account for the arrangement of vascular tissue in the leaf.The transverse section of a plant material shows the following anatomicalfeatures - (a) the vascular bundles are conjoint, scattered and surrounded by a sclerenchymatous bundle sheaths. (b) phloem parenchyma is absent. Whatwill you identify it as?Determine the collective true-false status of the statements using the choices below. I. After soil water crosses a root’s epidermis, it seeps into parenchyma that forms the root’s region of cortex until it reaches the vascular cylinder.; II. In a typical eudicot root, the vascular cylinder divides ground tissue into regions of pith and cortex.; III. By contrast, the vascular cylinder in a typical monocot root contains very little pith or none at all.; IV. Water and substances dissolved in it must pass through the endodermis of a root’s vascular cylinder before entering the xylem for distribution to the rest of the plant. Only two (2) statements are true. None of the statements is true. Only one (1) statement is true. Only three (3) statements are true. All statements are true.
- (a). When making furniture, one prefers the heartwood or the sapwood ? Explain your reasons (b). Cutting a cross section of a herbaceous dicotyledonous stem and a monocotyledonous stem, you will notice the differences of the arrangement of tissues and vascular bundles. Compare the cross sections by labelled illustrationsTwo mechanical tissues of the cortex in herbaceous stem. _____________________________________________________ Which of these mechanical tissues may be photosynthetic in function? _____________________________________________________ This is the basic type of stele in the stem of all angiosperms. ____________________________________________________Determine the collective true-false status of the statements using the choices below. I. In most eudicot leaves, large veins branch into a network of minor veins.; II. A leaf’s lower surface usually has fewer stomata than the upper surface.; III. A leaf’s upper surface typically receives the most direct sunlight may have a thicker cuticle than the lower surface.; IV. Epidermal cells secrete a translucent, waxy cuticle that slows water loss. None of the statements is true. All statements are true. Only three (3) statements are true. Only one (1) statement is true. Only two (2) statements are true.
- 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.(a) There are two components to the conducting system in secondary tissues, one responsible for conduction longitudinally (root to shoot and vice versa) and the other responsible for lateral conduction. Name these two systems. (b) Which type of vascular cambium initial gives rise to each of the components named above.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.
- Apical meristems are important for primary growth in plants .what is an apical meristem and where on a plant would you expecte to find them?The vascular system in piants is made up of two tissues: phloem and xylem. (a) Mark on the image above the positions of the xylem and phloem. (b) Differentiate between these vascular tissues. (c) Identify and describe a recent technology used to determine plant structure.A root apical meristem is protectedby a thimble-like root cap. Draw andlabel a simple outline of a root dividedinto four sections: root cap (at thebottom), root apical meristem, primarymeristems, and mature tissues.