संयुक्त प्रवेश परीक्षा 'जेट' 14 मई 2023 को / JET exam Date Release 14 May 2023

संयुक्त प्रवेश परीक्षा 'जेट' 14 मई 2023 को / JET exam Date Release 14 May 2023

संयुक्त प्रवेश परीक्षा 'जेट' 14 मई को

जोधपुर कृषि विश्वविद्यालय के प्रशासनिक कार्यालय में सोमवार को प्रदेश के सभी कृषि विश्वविद्यालयों तथा राज. पशु विज्ञान एवं चिकित्सा विश्वविद्यालय बीकानेर में स्नातक, स्नातकोत्तर तथा पीएचडी में प्रवेश के लिए संयुक्त प्रवेश परीक्षा 2023 के आयोजन के लिए बैठक की जाएगी। बैठक की अध्यक्षता कुलपति प्रो बी आर चौधरी ने की।

बैठक की चर्चा के बाद जेट परीक्षा 14 मई को प्रदेश के विभिन्न केन्द्रों पर कराने का निर्णय किया गया। बैठक में सभी कृषि विवि के प्रतिनिधियों के अलावा कृषि विश्वविद्यालय जोधपुर के संकायध्यक्ष डॉ. सीताराम कुम्हार, निदेशक छात्र कल्याण डॉ. वीरेन्द्र सिंह, परीक्षा नियंत्रक डॉ मनमोहन सुंदरिया आदि ने भाग लिया।

Topic - Soil Moisture Constants

Topic - Soil Moisture Constants

Soil Moisture Constants

Plants require adequate moisture constantly within the root zone from germination to maturity. A proper moisture balance has to be maintained for unretarded growth and development of plants at various stages. Hence, certain soil moisture contents are of particular significance in agriculture and are often called 'soil moisture constants'. 

 These soil moisture constants are explained below.

Saturation capacity: When all the pores of the soil are filled with water, the soil is said to be under saturation capacity or maximum water holding capacity. The tension of water at saturation capacity is almost zero.


Field capacity (FC): The field capacity of the soil is the moisture content after all the gravitational water is drained and the moisture content has become relatively stable. This situation usually exists two to three days after the soil has been thoroughly wetted by rainfall or irrigation. The field capacity is the upper limit of available moisture range in soil moisture and plant relations. The soil moisture tension at field capacity varies from soil to soil, but usually it is considered around 1/3 atmosphere.


Permanent wilting point (PWP): It is the soil moisture content at which plants can no longer obtain enough moisture to meet transpiration requirements, remain wilted and their growth ceases. At the permanent wilting point the films of water around the soil particles are held so tightly that roots in contact with the soil cannot remove water at a sufficient rate to meet the demand. Hence, the plant is wilted. The permanent wilting point is the lower limit of available moisture range in soil moisture and plant relations. The soil moisture tension at permanent wilting point is about 15 atmospheres.


Available water: Soil moisture between field capacity and permanent-wilting point is referred to as readily available water. It is, the moisture available for plant use. It is generally reported that the water depletion within this broadly accepted available range need not be beyond 50% for most of the crops for obtaining water at fairly sufficient rate. In general, fine-textured soils have a wide range of water between field capacity and permanent wilting point than coarse textured soils.

Plant Physiology Important Que For Jet / Pre-Pg

Plant Physiology Important Que For Jet / Pre-Pg

~ Theory of evolution was given by: Charles Darwin.

~ Photo-respiration is: Energy spending process.

~ Mass flow is affected by: Transpiration.

~ Conversion of fat to sugar occurs in: Glyoxysomes.

~ Photorespiration occurs in: Chloroplast.

~ Photosynthesis is an: Oxidation -Reduction process.

~ Photo system II is absent in: C4plants.

~ Conversion of fat into carbohydrate is in: Glyoxylate cycle.

~ Precursor of IAA is: Tryptophan.

~ Father of plant physiology is: Stephen hales. 

~ Cobalt as a constituent of: Vit. B12

~ Law of tolerance introduced by: Shelford. 

~ Glycolysis occurs in the part of cell: Cytoplasm

~ Krebs cycle & ETC occurs in: Mitochondria

~ Final product of Glycolysis is: Pyruvate.

~ Light or hill reaction takes place in: Grana of chloroplast. 

~ Dark reaction or Calvin cycle takes place in: Stroma of chloroplast. 

~ Most abundant protein in the world: Rubisco. 

~ One molecule of glucose is produced: 686 Kcal.

~ Highest water use efficiency order: CAM> C4>C3. 

~ Kranz type leaf anatomy found in: C4 plants. 

~ Calvin cycle & hatch- slack occurs in: Chloroplast. 

~ Photosynthetic rate highest in: C4 plants. 

~ Glucose is a type of sugar: Monosaccharide. 

~ Sugar which is sweetest among all sugars: Fructose. 

~ Examples of disaccharides are: Maltose, lactose, sucrose. 

~ Non reducing sugar: Sucrose. 

~ Sugar found in gernminating seeds: Maltose. 

~ Lactose (milk sugar) is a combination: Glucose + Galactose

~ Term protein was coined by: Moulder in 1840

~ The term enzyme was coined by: W. Kutins

~ Lock & key model was proposed by: Fisher

~ Term vitamin was proposed by: Funk

~ Bond that joins amino acids: Carboxyl.


Topic - Anti-transpirants

Topic - Anti-transpirants

 Anti-transpirants

 Antitranspirants are the materials or chemicals which decrease the water loss from plant leaves by reducing the size and number of stomata. Nearly 99 per cent of the water absorbed by the plant is lost in transpiration. Antiranspirants and is any natural applied to transpiring plant surfaces for reducing water loss from the plant.

There are of four types.

1. Stomatal closing type: Most of the Tran spirants occur through the stomata on the leaf surface. Some fungicides like phenyl mercuric acetate (PMA) and herbicides like Atrazine in low concentration serve as antitranspirants by inducing stomatal closing. These might reduce the photosynthesis. PMA was found to decrease transpiration than photosynthesis.

2. Film forming type: Plastic and waxy material which form a thin film on the leaf surface and result into physical barrier. For example ethyl alcohol. It reduces photosynthesis Eg. Tag 9, S – 789 foliate.

3. Reflectance type: They are white materials which form a coating on the leaves and increase the leaf reflectance (albedo). By reflecting the radiation, vapour pressure gradient and thus reduce transpiration. Application of 5 percent kaolin spray reduces transpiration losses. Eg. Diatomaceous earth product (Celite), hydrated lime, calcium carbonate, magnesium carbonate, zincs sulphate etc.

4. Growth retardant: These chemicals reduce shoot growth and increase root growth and thus enable the plants to resist drought. They may also induce stomatal closure. Cycocel is useful for improving water status of the plant.