The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:
Plant physiology deals with how the different parts of the plant like leaves, stems, roots, and phloem works and function collectively. Plant physiology manages distinctive plant structures and their working. It empowers dissecting measures in plants, to be specific – photosynthesis, mineral nourishment, breath, transportation in plants, and eventually plant improvement and development, which are characteristics shown by living substances.
All plants have a unique vascular system that transports nutrients, sugar, and water in all parts. The system consists of –
Usually, the process of transporting food to a plant is multi-dimensional, which means it occurs through diffusion. For physiological activities, water has a vital role to play. Plant–water relation is an evergreen topic that needs to comprehend the concept better.
As you know, no plant can grow with minerals as it acts as nutrition for them. Mineral nutrition helps in identifying the basic elements for plant growth and development. Macro and micronutrients in plants help in the maintenance of enzyme level and osmotic presence. During this process, nitrogen-fixing also arises in plants. It is through this process that plants accumulate nitrogen from the soil for protein synthesis.
As a biology enthusiast, you must have imagined how photosynthesis in higher plants takes place? It is through chloroplasts using four pigments. When energy is extricated from oxidizable substances and gets stored in bonds, it is called phosphorylation. Since plants make their own food, that’s why they are called autotrophs.
Now, as you know how plants acquire their food through photosynthesis, cellular respiration in plants results in the formation of energy that involves glycolysis. Later, energy is utilized through the following steps – electron transport system and oxidative phosphorylation.
Another pivotal part of respiration in plants is the respiratory quotient. The respiratory quotient (RQ) quantifies the ratio of the volume of carbon dioxide to that of oxygen used.
Do you know that plants grow throughout their life, unlike humans? It is due to the meristematic tissues in plants. Usually, plant growth can be restrained by the enlargement in their number, length, area, and volume. There are three phases of a plant’s growth –
Development is part of plant growth, but it also includes the lifecycle of the plant from germination to senescence.
The two factors are responsible for plant growth and development –
Extrinsic factors include water, nutrients, and oxygen, etc.
Plant physiology covers a wide variety of topics, from interactions between cells and modules to the internal functions of plants. It is helpful in the study of fruits, vegetables, flowers, and edible parts. From the point of view of exams, this chapter plays a paramount role. For better cognizance, you can refer to videos on MSVgo. MSVgo is an app whose core doctrine is to persuade you to understand the conviction with examples or explanatory visualizations or animations.