Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
CHLOROPLASTS
Discoidal or oval - Higher plants
Girdle shaped - Ulothrix
Cup shaped - Chlamydomonas
Reticulate - Oedogonium
Spiral - Spirogyra
Stellate - Zygnema
(i) Grana - Made up of Granum lamellae arranged in the form of stacks of coins. Each granum lamella is surrounded by well-defined membrane called Thylakoid (Thylakoid discovered by Menke). Each granum lamella, granular structures called Quantasomes are present. Quantasomes are photosynthetic units. (Quantasomes discovered by Park, Pon and Biggins) Each qunatasome has 230 chlorophyll molecules. Each chlorophyll molecule has two parts - head and tail. Head part is responsible for green colour which is controlled by Mg++. Due to presence of chlorophyll in granum lamellae, the light reaction of photosynthesis takes place in the granum. Lamellae which connects grana are called stroma thylakoids or fret channels (Weier 1966).
(ii) Stroma - The non pigmented enzymatic part of chloroplast is called stroma. It is present in form of matrix. Due to presence of enzymes in stroma, dark reactions of photosynthesis take place here. Stroma contains osmophilic droplets called Plastoglobuli. These store lipids. Stoma of chloroplast contains proteins, phospholipids, nucleic acids, ribosome and fewer amounts of enzymes. Ris and Plaut, Ruthe sager discovered DNA in chloroplast, which is called ctDNA or plastidial DNA. Genetic system of chloroplast is called Plastidome. Due to presence of DNA, RNA and ribosomes chloroplast is called semiautonomous unit like mitochondria having a complete protein synthesis apparatus in stroma.
Vertical Stratification - Tropical Rain Forest In a tropical rain forest, vertical stratification is very clearly seen. In addition to the different layers described above, th
Q. How are the circulatory systems of animals classified? A circulatory system is classified as open or closed. In open circulatory systems blood gets out of vessels and flows
Assessment Infective endocarditis is characterised by insidious onset of fever, malaise, night- sweats and weight loss. Other signs include vomiting, fatigue, headache, mya
Each ventricle has an inflow part beginning just in front of the corresponding atrioventricular orifice and running forwards to the left towards the apex of the heart. The cavity t
Q. What are the Signs of cardiac tamponade? The clinical presentation will be that of a low output state with anxiety, restlessness, dyspnoea, sweating, cold extremities and dr
How can the enzymes be classified? Explain giving examples. Based on structure, enzymes can be classified into monomeric enzymes and oligomeric compounds. Monomeric enzym
Q. What is Sanitation in food service establishments? We start our study of this topic by first defining what is sanitation? A three-word definition of food sanitation
What are the five human digestive secretions? Which of them is the only one that does not contain digestive enzymes? The human digestive secretions such as: saliva, gastric jui
Q. Causes of Mitral Regurgitation? Mitral regurgitation is the most common valvular abnormality seen in clinical practice. Different disease processes leading to mitral regurgi
Whenever a chromosome is replicated the replication machinery passes by the nucleosomes without deleting the histones from the DNA. How this happens is since not fully understood.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd