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Primary growth in plants is growth that takes place from the tips of roots or shoots. It leads to lengthening of roots and stems and sets the stage for organ formation. It is distinguished from secondary growth that leads to widening. Plant growth takes place in well defined plant locations.
This is the primary growth. Primary growth leads to lengthening of the plant body and organ formation. Primary growth leads to lengthening of the plant body and organ formation. All plant organs arise ultimately from cell divisions in the apical meristems, followed by cell expansion and differentiation.
On top of the gradual growth of the plant, the image reveals the true meaning of phototropism and cell elongation, meaning the light energy from the sun is causing the growing plant to bend towards the light aka elongate. Plant growth and development are mediated by specific plant hormones and plant growth regulators (PGRs) (Ross et al. 1983). [10]
Primary growth is the elongation of the stems and roots. Secondary growth consists of a progressive thickening and strengthening of the tissues as the outer layer of the epidermis is converted into bark and the cambium layer creates new phloem and xylem cells.
The country experienced a commendable average annual GDP growth rate of 6.3% between 1980 and 1990. The 1980s saw a surge in manufacturing exports, with an annual large-scale manufacturing growth rate of 8.8%, and solid growth in agriculture, with an annual agricultural growth rate of 5.4%.
The Federal Bureau of Statistics provisionally valued major crop yields at Rs.504,868 million in 2005 thus registering 55%+ growth since 2000 [16] while minor crop yields were valued at Rs.184,707 million in 2005 thus registering 41%+ growth since 2000. The exports related to the agriculture sector in 2009–10 are Rs 288.18 billion including ...
Urdu in its less formalised register is known as rekhta (ریختہ, rek̤h̤tah, 'rough mixture', Urdu pronunciation:); the more formal register is sometimes referred to as زبانِ اُردُوئے معلّٰى, zabān-i Urdū-yi muʿallá, 'language of the exalted camp' (Urdu pronunciation: [zəbaːn eː ʊrdu eː moəllaː]) or لشکری ...
The sector, as a whole, provides employment to 3.5 million people and plays a pivotal role in promoting the growth of the vendor industry. Pakistan's auto market is considered among the smallest, but fastest growing in South Asia. Over 180,000 cars were sold in the fiscal year 2014–15, rising to 206,777 units fiscal year 2015–16. this is an ...