Across
- 2. Contains water and dissolved substances. Its primary role is to maintain pressure against the inside of the cell wall, giving the cell shape and helping to support the plant.
- 4. Contain the green pigment chlorophyll and carry out photosynthesis
- 7. The ground tissue towards the interior of the vascular tissue in a stem or root
- 8. Type of plant tissue that covers and protects the plant.
- 9. The layer of tissue between the vascular tissue and the epidermis
- 12. Part of phloem tissue that are arranged end to end to make up a long sieve tube which transports organic substances such as sugars and amino acids and lacks some organelles.
- 14. - directional bending of a plant toward a light source
- 16. Rigid structure located outside the cell membrane. It consists mainly of cellulose and may also contain lignin.
- 17. Are points of attachment for leaves, aerial roots, and flowers.
- 18. Are specialized plastids that contain starch granules and settle downward in response to gravity found in shoots and in specialized cells of the root cap.
- 19. Type of plant tissue that transports water, minerals, and sugars to different parts of the plant.
- 22. Mostly made up of parenchyma cells, but may also contain collenchyma and sclerenchyma cells that help support the stem.
- 23. Serves as a site for photosynthesis, provides a supporting matrix for the vascular tissue, and helps to store water and sugars.
Down
- 1. Are elongated cells with unevenly thickened walls which provide structural support, mainly to the stem and leaves.
- 3. Contain more ribosomes and mitochondria which are found alongside the sieve-tube cells
- 4. Plant growth responses known to delay senescence in leaf tissues, promote mitosis, and stimulate differentiation of the meristem in shoots and roots.
- 5. Are xylem cells with thick secondary cell walls that are lignified.
- 6. Occur only at the bases of leaf blades and at nodes of monocots
- 10. The arrangement of leaves on a stem.
- 11. Are plant regions of continuous cell division and growth
- 13. Are xylem cells with thinner walls; they are shorter than tracheids.
- 15. Are extensions of root epidermal cells which increase the surface area of the root thus greatly contributing to the absorption of water and minerals.
- 18. Physiological process that leads to the fall of a plant organ (such as leaf or petal drop)
- 20. Main plant hormone responsible for cell elongation in phototropism and gravitropism
- 21. Volatile plant hormone that is associated with fruit ripening, flower wilting, and leaf fall