Term
|
Definition
- extension of the plant body and formation of the primary tissue. Primary plant body.
|
|
|
Term
|
Definition
| development, a particular shape and form. The planes in which cells divide seem to determine these. |
|
|
Term
|
Definition
| the process by which cells with identical genetic constitutions become different from one another and from the meristematic cells from which they originated. |
|
|
Term
|
Definition
| larger units of tissues. Include ground, vascular and dermal tissue systems. |
|
|
Term
|
Definition
| cells that are associated in various ways. Forming structural and functional units. |
|
|
Term
|
Definition
| one of the type of sclerenchyma cells |
|
|
Term
|
Definition
| one of the type of sclerenchyma cells |
|
|
Term
|
Definition
| One of the principal conducting cells of the xylem. Two types of these are tracheids and vessel elements. |
|
|
Term
|
Definition
| elongated cells that have secondary cells and lack protoplasts at maturity. Have pits in their wall. |
|
|
Term
|
Definition
| - elongated cells that have secondary cells and lack protoplasts at maturity. Have pits in their wall. Contain perforations which are areas lacking both primary and secondary walls. |
|
|
Term
|
Definition
| -principal conducting cells of the phloem. Clusters of pores are known as “__ areas” through which the protoplasts of adjacent sieve elements are connected. |
|
|
Term
|
Definition
| one of the sieve elements. The only type of food conducting cells in gymnosperms. |
|
|
Term
|
Definition
| one of the sieve elements. The only type of food conducting cells in angiosperms. |
|
|
Term
|
Definition
The part of the wall bearing the sieve areas with larger pores.
|
|
|
Term
|
Definition
| specialized parenchyma cells are associated with sieve- tube elements. Contain the components of a living plant cell, including nucleus. Closely related to their sieve tube elements. |
|
|
Term
|
Definition
| a type of cell in the epidermis. Covered with cuticles to prevent water loss. Transverse section through a closed stoma. Each thick walled guard cell is attached to a subsidiary cell. Often associated with epidermal cells that differ in shape than ordinary epidermal cells. |
|
|
Term
|
Definition
| - small pores in the dermal cells, control the movement of gasses including water vapor, into and out of these parts. Abundant on leaves. |
|
|
Term
|
Definition
| a specialized cell in epidermis. Root hairs facilitate the absorbtion of water and minerals from the soil. Seen in plants that need lower leaf temps, and lower rates of water loss. Hairs decrease attack by insects, impale insects and larvae. |
|
|
Term
• What is the relationship between apical meristems and the primary meristems?
|
|
Definition
| Apical meristems are differentiated into primary meristems. These are called protoderm, procambrium, and ground tissues. Apical meristems are at the roots and shoots, once these differentiate they become primary meristems. |
|
|
Term
|
Definition
| where a plant assumes a particular shape or form. Expansion of tissue. |
|
|
Term
|
Definition
| the process by which cells become different from one another and from the meristem cells from which they originated. They synthesis different proteins. |
|
|
Term
|
Definition
| does not constitute growth, it may increases the cell number without increasing the overall volume of a structure. |
|
|
Term
|
Definition
| Growth is an irreversible increase in size. Accomplished by cell division and cell enlargement. |
|
|
Term
| How does the structure of PARENCHYMA, collenchyma, and sclerenchyma determine the function of each cell type and its location in the plant? |
|
Definition
| Parenchyma is made up of ground meristem, the pitch of stems, roots, and mesophyll. Parenchyma is living at maturity and capable of cell division, some have secondary walls. Those with only primary walls have a role in regeneration and wound healing. Living protoplasts allow them to have a part in photosynthesis, storage, and secretion, transfer. |
|
|
Term
| How does the structure of parenchyma, COLLENCHYMA, and sclerenchyma determine the function of each cell type and its location in the plant? |
|
Definition
| beneath epidermis in stems and petioles. Bordering leaves in eudicot leaves. Living at maturity, long and elongated. Non lignin primary walls, long flexible wall developed while the organ is elongating, young growing organs. |
|
|
Term
| How does the structure of parenchyma, collenchyma, and sclerenchyma determine the function of each cell type and its location in the plant? |
|
Definition
| Tissues strengthened, support plants. No longer elongating any or all parts of plant bodies, lack protoplasts at maturity. Thick, lignified walls important in strength and support what has ceased elongating. |
|
|
Term
| What are the differences between Tracheids and Vessel elements in the Xylem? |
|
Definition
| Vessel elements contain perforations that lack primary and secondary walls. Tracheids are water conductors they are less specialized gymnosperms have just tracheids, angiosperms have both. Vessel elements are more efficient conductors of water. Vessel elements are less safe for plants because of freezing. |
|
|
Term
| What are the differences between SIEVE CELLS and sieve tubes in the phloem? |
|
Definition
| food conductors in gymnosperm. Sieve areas pores are narrow and lack sieve plates. |
|
|
Term
| What are the differences between sieve cells and SIEVE TUBES in the phloem? |
|
Definition
| angiosperms sieve area have larger pores, plates occur on end walls. End to end in a longitudal series. Sieve plates. |
|
|
Term
| Why do sieve tubes need companion cells? |
|
Definition
| Small pore connecting the two. Delivery of substances, sieve cells lack a nucleus and ribosomes. Sieve cells do include info molecules, proteins, and ATP necessary for maintenance of sieve tube elements. |
|
|
Term
| What are some different functions that Trichomes perform? |
|
Definition
| Trichomes are specialized cells on epidermis. The root hairs facilitate the absorption of water and minerals from the soil. Plants in arid locations. Trichomes secrete toxic solutions. Defense against insects- hooked hairs. Trapping prey in carnivorous plants. |
|
|
