Month: January 2021

Regulation of Water in Plants

Regulation of Water in Plants There are many ways through which plants regulate water in them- Leaf Fall- leaves and roots of terrestrial plants regulate the water balance in protoplast. During drought, they shed their leaves so that water loss may not occur via transpiration. Increased number of Root Hairs- The function of root hairs

Steady State and Homeostasis

Steady State and Homeostasis: Steady State refers to a system in which the rate of input of matter and energy equals to that of output. The living cell or organism is an example of steady state because it must be continuously supplied with water, oxygen, energy and a variety of materials. Besides, there must also

Heat and Temperature

Heat and Temperature: Heat is the agent which produces the sensation of hotness. It is measured in Joules. Temperature is a measure of the degree of hotness or coldness of a body. It is measured in degree Celsius. Difference between Heat and Temperature: Heat Temperature Heat is a form of energy. Temperature is the degree

Heat Radiation

What is Heat Radiation? If we stand before the fire, we feel hot. The heat comes to our body neither by convection nor by conduction (air is a bad conductor of heat). The heat comes to our body by radiation. It does not require a medium for heat transfer. For conduction and convection, an intervening

Ziauddin Barani and Amir Khusrau

Ziauddin Barani and Amir Khusrau: Ziauddin Barani: Maulana Barani was born in 1286 in the reign of Sultan Balban. For the study of Delhi Sultanate, as literary source material, two important texts of Barani such as Tariq-i-Ferozshahi and Fatwa-i-Jahandari are having the greater importance. It is said that where Tabakat-i-Nashri of Minhas-u-Siraj has ended Tariq-i-Ferozshahi

Write a short note on the Bahmani Kingdom?

Bahmani Kingdom: In southern India and the Deccan, there were two principal states- the Bahmani and the Vijayanagar kingdoms. They had little or no influence on North Indian politics but their mutual relation was of constant war against each other which ultimately brought about the end of both of them leading to the foundation of

Essential Elements in Plants

Essential Elements in Plants: The essential elements are of two main types based on the fact that in how much quantity they are needed within the plants. These types are macroelements and microelements. Macroelements are those elements which are required in higher quantities. Their concentration in the plant tissues is about 1 mg per gram


What is Photorespiration? The process of photorespiration was first observed by Warburg (1920), so is also called as Warburg’s effect. During the process, the rate of photosynthesis decreases at higher O2 concentration (than CO2) in C3 plants. The process of photorespiration takes place in chloroplasts, peroxisomes and mitochondria. Biochemical Mechanism: When the O2 concentration is