Search results
Results from the WOW.Com Content Network
In cell biology, the meristem is a structure composed of specialized tissue found in plants, consisting of stem cells, known as meristematic cells, which are undifferentiated cells capable of continuous cell division.
[2] [failed verification] Two distinct areas of stem cells are recognised: the apical meristem and the lateral meristem. Plant stem cells are characterized by two distinctive properties, which are: the ability to create all differentiated cell types and the ability to self-renew such that the number of stem cells is maintained. [3]
Specifically, the cell division and differentiation needed for growth occurs in specialized structures called meristems. [1] [2] These consist of undifferentiated cells (meristematic cells) capable of cell division. Cells in the meristem can develop into all the other tissues and organs that occur in plants.
The meristem can be defined as the tissue or group of plant tissues that contain undifferentiated stem cells, which are capable of producing any type of cell tissue.Their maintenance and development, both in the vegetative meristem or the meristem of the inflorescence is controlled by genetic cell fate determination mechanisms.
3. Development of a marginal meristem [18] Lateral organ and leaf development initiation is dependent upon the structure of the shoot apical meristem (SAM). [18] In the center of the SAM, there is a central zone of many indeterminate, undifferentiated cells where cell division is infrequent. [18]
[9] [10] These two cells are very different, and give rise to different structures, establishing polarity in the embryo. apical cell The small apical cell is on the top and contains most of the cytoplasm, the aqueous substance found within cells, from the original zygote. [11] It gives rise to the hypocotyl, shoot apical meristem, and ...
The normal lifespan of plant cells is one to three years. Stems have cells called meristems that annually generate new living tissue. Photosynthesis. Stems have two pipe-like tissues called xylem and phloem. The xylem tissue arises from the cell facing inside and transports water by the action of transpiration pull, capillary action, and root ...
The quiescent centre is a group of cells, up to 1,000 in number, in the form of a hemisphere, with the flat face toward the root tip of vascular plants. [1] It is a region in the apical meristem of a root where cell division proceeds very slowly or not at all, but the cells are capable of resuming meristematic activity when the tissue surrounding them is damaged.