Plant Physiology: Angiosperm Flower and Environmental Factors

Conditions Necessary for Plant Growth and Development

• Not all conditions necessary for plant growth and development are specified

Role of Turgidity in Plant Cells

• Turgidity provides mechanical support and maintains plant cell shape
• Turgidity helps maintain plant structure and prevents wilting

Angiosperm Reproduction

• Pollen plays a crucial role in fertilization during angiosperm reproduction
• Pollen contains the male gametes (sperm cells) essential for fertilization

Seed Germination

• Water absorption triggers the resumption of metabolic activities and growth in seed germination
• Water uptake breaks seed dormancy, allowing seedling emergence

Seed Formation

• Seed formation occurs through the maturation of ovules in plants
• Seeds contain the embryo and stored food, which supports seedling growth

Plant Growth Definition

• Growth in plants refers to the irreversible increase in size, mass, and cell number
• Plant growth is accompanied by cell division, differentiation, and expansion

Origin of Plant Growth

• The primary origin of plant growth is the meristem region
• Meristems are undifferentiated cells that give rise to new tissues and organs

Capacity for Unlimited Growth

• The presence of meristems enables plants to have the capacity for unlimited growth throughout their life
• Meristems allow plants to continuously produce new tissues and organs

Meristem Function

• Cell division and differentiation occur in meristems, producing tissues that develop into different plant parts
• Meristems give rise to roots, stems, leaves, and other organs through organized growth and development

Nature of Plant Growth

• Plant growth is characterized by its capacity for unlimited growth and development
• Plant growth is indeterminate, meaning it can continue throughout the plant's life span