cellular differentiation

Growth at the cellular level involves four stages Cell expansion: an increase in the size of the cell due to formation of new protoplasm. Cell division: the cells increase in number due to mitotic cell division Cell differentiation: the cells became specialized to per form speci..

These are land plants which grow in moist habitats and need well aerated soils. They prefer soil and air with moderate humidity. They avoid soils with standing water and soils containing great abundance of salts. They have some special features. Root system is well developed. Stems are generally ae..

At the cellular level, growth of multi cellular organisms is governed by two main activities Reproduction of individual cells of body by mitotic cell divisions Growth of cells by synthesizing new protoplasm. The interphase stage of the cell cycle is differentiated into..

Growth is an irreversible increase in size and weight of an organism. The cells of the body do not grow uniformly but differentially. The main types of growth are auxetic, multiplicative and accretionary. The human growth curve is sigmoid and is controlled by hormones. Regeneration is of ..

f r . Mangrove plants exhibit vivipary. Flowering is under the control of daily length of light (photo period) and temperature. Depending upon the photoperiodic responses, 3 categories of plants exist namely SDP, LDP, and day neutral plants. Flowering is a phytochrome-mediated process. The site o..

This is not very common and is seen in plants such as Bryophyllum . It has succulent (fleshy) leaves and adventitious buds present at the margins of the leaves. These buds fall off and grow into new plants. Know Something Tissue Culture Tissue culture is based on the concept of cellular t..

The ovum is the female haploid gamete which fuses with the sperm and develop into an organism after fertilisatio..

or B lymphocytes. T cells are responsible for cellular immunity. B cells provide humoral immunity. Both the types are produced in bone marrow . The process of their production is called Haematopoiesis . Some immature lymphocytes first migrate to the thymus gland, where they mature to b..

Summary - An angiosperm plant body is composed of two basic types of tissues namely meristematic and permanent tissues. Meristematic tissue is formed by undifferentiated, embryonic cells called meristematic cells. Meristematic cells are compactly arranged. They have thin cell wall abundant cytoplas..

Summary - All higher multicellular animals, called eumetazoans, exhibit a tissue and higher levels of organization There are four primary tissues in animals epithelial, muscular, connective and nervous Epithelial tissue (epithelium) is the simplest. It is avascular and develops from all the three p..