Crossword Puzzle

12345678910111213141516171819202122232425262728293031323334353637383940
Across
  1. 2. tissue：tissues have undifferentiated cells, which form the building blocks of the specialized plant structures.
  2. 3. tissue：A ground tissue is a plant tissue other than those of the dermal tissues and the vascular tissues. It arises from the ground meristem. It fills in the soft parts of the plants, such as cortex, pith, pericycle, etc.
  3. 5. woody perennial plant, typically having a single stem or trunk growing to a considerable height and bearing lateral branches at some distance from the ground.
  4. 7. fence of wooden stakes or iron railings fixed in the ground, forming an enclosure or defense.
  5. 8. ：The upper or outer layer of the two main layers of cells that make up the skin
  6. 10. of a plant normally below the ground
  7. 12. ：a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
  8. 18. spreading of something more widely
  9. 19. the color between blue and yellow in the spectrum; colored like grass or emeralds
  10. 20. to or denoting an organism that contains genetic material into which DNA from an unrelated organism has been artificially introduced
  11. 24. seed-bearing part of a plant, consisting of reproductive organs (stamens and carpels) that are typically surrounded by a brightly colored corolla (petals) and a green calyx (sepals).
  12. 25. reproduction ：vegetative reproduction, any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or grows from a specialized reproductive structure (such as a stolon, rhizome, tuber, corm, or bulb)tissue culture propagation ： It makes use of parts of a plant to generate multiple copies of the plant in a very short duration. The technique exploits the property of totipotency of plant cell which means that any cell from any part of the plant can be used to generate a whole new plant.
  13. 26. tissue：Dermal tissue is the outermost layer of plants, analogous to the skin of animals. This layer is more commonly known as the epidermis, the same as our outer layer. They are one of the three types of plant tissues, along with vascular and ground tissue.
  14. 29. of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces. Also called stomate.
  15. 31. exchange：Gas exchange is the process by which oxygen and carbon dioxide (the respiratory gases) move in opposite directions across an organism's respiratory membranes, between the air or water of the external environment and the body fluids of the internal environment.
  16. 32. living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses, typically growing in a permanent site, absorbing water and inorganic substances through its roots, and synthesizing nutrients in its leaves by photosynthesis using the green pigment chlorophyll.
  17. 34. sharp explosive cry of certain animals, especially a dog, fox, or seal.
  18. 35. tissue：The outer layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it, such as cork.
  19. 36. meristem：Secondary, or lateral, meristems, which are found in all woody plants and in some herbaceous ones, consist of the vascular cambium and the cork cambium. They produce secondary tissues from a ring of vascular cambium in stems and roots.
  20. 38. chemical or natural substance added to soil or land to increase its fertility
  21. 39. protective and waxy or hard layer covering the epidermis of a plant, invertebrate, or shell.
  22. 40. or wound (a person or animal) with a bullet or arrow:
Down
  1. 1. space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
  2. 4. tissue： the tissue in higher plants that constitutes the vascular system, consisting of phloem and xylem, by which water and nutrients are conducted throughout the plant.
  3. 6. cells：each of a pair of curved cells that surround a stoma, becoming larger or smaller according to the pressure within the cells.
  4. 9. upper layer of earth that may be dug or plowed and in which plants grow
  5. 11. process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
  6. 13. vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
  7. 14. sweet and fleshy product of a tree or other plant that contains seed and can be eaten as food
  8. 15. colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis. Clonen：organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.
  9. 16. hard fibrous material that forms the main substance of the trunk or branches of a tree or shrub, used for fuel or timber:
  10. 17. green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
  11. 21. ：the vascular tissue in plants that conducts water and dissolved nutrients upward from the root and also helps to form the woody element in the stem. Compare with phloem.
  12. 22. sweet crystalline substance obtained from various plants, especially sugar cane and sugar beet, consisting essentially of sucrose, and used as a sweetener in food and drink:
  13. 23. flowering plant's unit of reproduction, capable of developing into another such plant
  14. 27. main body or stalk of a plant or shrub, typically rising above ground but occasionally subterranean.
  15. 28. flattened structure of a higher plant, typically green and blade-like, that is attached to a stem directly or via a stalk. Leaves are the main organs of photosynthesis and transpiration
  16. 30. mesophyll：The spongy mesophyll is a type of photosynthetic tissue found in the leaves of most plants.
  17. 33. ：the main woody stem of a tree as distinct from its branches and roots.
  18. 37. meristem：Apical Meristem Definition The apical meristem is the growth region in plants found within the root tips and the tips of the new shoots and leaves. Apical meristem is one of three types of meristem, or tissue which can differentiate into different cell types. Meristem is the tissue in which growth occurs in plants.