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Plant - Growth & Development
Flash cards
Page 2


Plant - Growth & Development
Flash cards
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
Page 3


Plant - Growth & Development
Flash cards
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
Page 4


Plant - Growth & Development
Flash cards
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
In dicotyledonous plants and gymnosperms, the lateral 
meristems, vascular cambium and cork-cambium appear later 
in life. There are the meristems that cause the increase in 
the Girth of the organs in which they are active. This is known 
as secondary growth of plant.
•
Page 5


Plant - Growth & Development
Flash cards
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
The growth of plants is due to the presence of Meristem at 
certain locations in their body.
•
In dicotyledonous plants and gymnosperms, the lateral 
meristems, vascular cambium and cork-cambium appear later 
in life. There are the meristems that cause the increase in 
the Girth of the organs in which they are active. This is known 
as secondary growth of plant.
•
Growth, at a cellular level, is principally a consequence of 
increase in the amount of Protoplasm.
•
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FAQs on Flashcards: Plant - Growth & Development - Biology Class 11 - NEET

1. What are the main factors influencing the growth and development of plants?
Ans. The main factors influencing the growth and development of plants include sunlight, water, nutrients, temperature, and hormones. Sunlight provides energy for photosynthesis, water is essential for the absorption of nutrients and transportation within the plant, nutrients such as nitrogen, phosphorus, and potassium are needed for plant growth, temperature affects the rate of metabolic processes, and hormones regulate various aspects of plant growth and development.
2. How does photosynthesis contribute to plant growth?
Ans. Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. Glucose is used as a source of energy for plant growth and development. It is stored in various parts of the plant, such as roots, stems, and leaves, and is also used to produce other essential compounds, such as cellulose for cell walls. Therefore, photosynthesis is crucial for providing the energy and building blocks necessary for plant growth.
3. What are the stages of plant growth and development?
Ans. The stages of plant growth and development can be divided into three main phases: vegetative growth, reproductive growth, and senescence. During vegetative growth, the plant focuses on developing its roots, stems, and leaves. Reproductive growth is characterized by the formation of flowers, pollination, and the production of seeds or fruits. Senescence refers to the aging and eventual death of plant tissues or the entire plant. These stages continue in a cycle for most plants.
4. How do hormones regulate plant growth and development?
Ans. Hormones play a vital role in regulating various aspects of plant growth and development. For example, auxins promote cell elongation and are responsible for phototropism and gravitropism. Gibberellins stimulate stem elongation and fruit development. Cytokinins promote cell division and delay senescence. Ethylene is involved in fruit ripening and leaf abscission. Abscisic acid regulates seed dormancy and stomatal closure. These hormones interact with each other and respond to external stimuli to coordinate plant growth and development.
5. What are the environmental factors that can affect plant growth?
Ans. Environmental factors that can affect plant growth include temperature, light intensity and quality, water availability, soil composition and fertility, and air pollution. Temperature extremes can damage plant tissues and affect metabolic processes. Different plants have different light requirements, and insufficient or excessive light can impact their growth. Water availability is essential for nutrient absorption and transportation within the plant. Soil composition and fertility influence nutrient availability, and air pollution can have detrimental effects on plant health.
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