Table of Contents
Which tissue is responsible for growth of plant?
meristem
The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Meristem allows plant stems and roots to grow longer (primary growth) and wider (secondary growth).
What do you mean by the growth of plants?
Plant growth could be defined as the increasing of plant volume and/or mass with or without formation of new structures such as organs, tissues, cells or cell organelles. Growth is usually associated with development (cell and tissue specialization) and reproduction (production of new individuals).
What is the tip of the external stem called what kind of tissue does it have inside that allows it to grow?
Apical meristems, which are located at the tips of shoots and roots in all vascular plants, give rise to three types of primary meristems, which in turn produce the mature primary tissues of the plant.
What stimulates plant growth?
There are five major types of plant hormones: auxins, cytokinins, gibberellins, ethylene and abscisic acid. Each hormone has a distinct job and for oilseed, pulse and cereal crops, auxins and cytokinins can greatly improve plant vigor, promote growth of roots and shoots and reduce stress.
What is primary growth of stem?
Primary growth of stems is a result of rapidly-dividing cells in the apical meristems at the shoot tips. The growth of the lateral meristems, which includes the vascular cambium and the cork cambium (in woody plants), increases the thickness of the stem during secondary growth.
Which tissue A is present in tip of stem and root?
Apical meristem is present at the growing tips of stems and roots. Their main function is to initiate growth in new cells of seedlings, at the tip of roots, and shoots.
Which type of plant growth is responsible for vertical growth in plants?
Meristems contribute to both primary (taller/longer) and secondary (wider) growth. Primary growth is controlled by root apical meristems or shoot apical meristems, while secondary growth is controlled by the two lateral meristems, called the vascular cambium and the cork cambium.
How is the growth of a plant related to cell division?
Like other multicellular organisms, plants grow through a combination of cell growth and cell division. Cell growth increases cell size, while cell division (mitosis) increases the number of cells. As plant cells grow, they also become specialized into different cell types through cellular differentiation.
Where does the primary growth of a plant take place?
Primary growth is a result of rapidly dividing cells in the apical meristems at the shoot tip and root tip. Subsequent cell elongation also contributes to primary growth. The growth of shoots and roots during primary growth enables plants to continuously seek water (roots) or sunlight (shoots).
What causes the growth of the shoot on a plant?
The increase in length of the shoot and the root is referred to as primary growth, and is the result of cell division in the shoot apical meristem. Secondary growth is characterized by an increase in thickness or girth of the plant, and is caused by cell division in the lateral meristem.
What causes a plant to increase in thickness?
Some plants, especially those that are woody, also increase in thickness during their life span. The increase in length of the shoot and the root is referred to as primary growth, and is the result of cell division in the shoot apical meristem.