Plant Physiology: Angiosperm Flower and Environmental Factors

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10 Questions

Which of the following is NOT a condition necessary for plant growth and development?


What is the purpose of turgidity in plant cells?

To aid in extension growth in cells

What is the role of pollen in angiosperm reproduction?

Forming embryo and endosperm

What triggers the resumption of metabolic activities and growth in seed germination?


What happens during seed formation in plants?

Flower ovary begins to develop into fruit

What is the definition of growth in plants?

An irreversible increase in size of an organ or its part or even of an individual cell

What is the primary origin of plant growth?

Buds in regions known as meristems

What enables plants to have the capacity for unlimited growth throughout their life?

The presence of meristems at certain locations in the plant body

What occurs in meristems that eventually produces tissues developing into different plant parts?

Cell division and elongation

What is the nature of plant growth in terms of its capacity?

Indeterminate, with a capacity for unlimited growth throughout their life

Study Notes

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

This quiz covers the structure, reproduction, life cycle, and germination of angiosperm flowers, as well as the effects of environmental factors on plant growth, development, distribution, and adaptation. It also touches on topics like photoperiodism, tropisms, and aging in plants.

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