copper and Boron role and deficiency symptoms
Copper
Compound of plastocyanin.
Essential for photosynthesis/ respiration.Agriexams library
Dieback and reclamation disease of cereals.
#Boron
Necessary for Pollen germination.
Boron is the only non-metal element among the micronutrient.
It is necessary for translocation of Sugars and is involved in reproduction and germination of pollen.
#Disease : due to deficiency
Browning of cauliflower is caused by Boron deficiency.
Top sickness of tobacco.
Fruit cracking of tomato.
Hard fruit of citrus.
Hen and chick disease of grape.
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Zinc, Cobalt and molybdenum role and deficiency symptoms
Zinc
In plants it is required for biosynthesis of hormones.
Zn deficiency causes-
-White bud of maize.
-Khaira disease of rice.
-Little leaf of cotton.
-Mottled leaf of citrus.
-Rosette formation.
#Cobalt
It is component of Vitamin B
It is essential for formation of type of hemoglobin in N-fixing nodule tissue known as leghaemogloin.
Act as O2 carrier in roots.
Also known as animal protein factor.
#Molybdenum
Mo: absorbed as molybdate MoO4-2 forms.
Mo is important component of enzyme: Nitrate reductage.
N-fixation in pulses.
Whiptail of cauliflower is due to deficiency of Mo.
Mo is required for carrot & raphanus for sweetness.
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DiSORDERS OF MUSCULAR AND SKELETAL SYSTEM
Myasthenia gravis: Auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle.
Muscular dystrophy: Progressive degeneration of skeletal muscle mostly due to genetic disorder.
Tetany: Rapid spasms (wild contractions) in muscle due to low Ca++ in body fluid.
Arthritis: Inflammation of joints.
Osteoporosis: Age-related disorder characterised by decreased bone mass
and increased chances of fractures. Decreased levels of estrogen is a common cause.
Gout: Inflammation of joints due to accumulation of uric acid crystals.
CONNECTING AND MISSING LINKS OF THE BIOLOGICAL WORLD
Link - Between the groups
Actinomycetes - Bacteria and Fungi
Archaeopteryx - Birds and Reptiles
Balanoglossus - Chordates and non - chordates
Chimera ( rat or rabbit fish ) - Bony and Cartilaginous fishes
Club moss - Bryophytes and Pteridophytes
Cycas - Pteridophytes and Gymnosperms
Gnetum - Gymnosperms and Angiosperms
Neopilina - Annelida and Mollusca
Ornithorhynchus ( Duck-billed Platypus ) - Reptiles and
Mammals
Peripatus ( Walking worm ) - Annelida and Arthropoda
Protopterus ( Lungfish ) - Pisces and Amphibia
Rickettsia - Virus, and Bacteria
Virus - Living and nonliving