Easyanswers.blog.com

In winter, the air in our Atmosphere is very cool as compared to the air coming out from our mouth. The vapours which is present in the air is very cool. when we talk the air which comes out from our mouth is hot then that air mixes with surrounding cool air. s the cool air and hot air from our mouth mixes and forms a tiny droplets  These tiny droplets concentrated in a limited area, appear like smoke or a small cloud near your mouth.

WHAT IS DEFORESTATION? Deforestation is cutting down of forests or trees for many purposes like building offices, schools, restaurants, hotels and many more things. we generally cut down trees for our needs. but cutting these trees really giving any benefit to mankind and its environment? How worse it is affecting on our environment? LIVES WHICH ARE DEPENDENT ON PLANTS.... Every thing in our environment is dependent on each other directly or indirectly. Like wise many lives are dependent on trees. Cutting trees are getting affected to not only humans and atmosphere but also it effects on Animals too. Tree as a Habitat for Animals: Birds, Monkeys, squirrels, snakes, ants, spiders, caterpillars, moths, bees, wasps, small plants(mosses), mosquitoes, are some of the organisms that you may find on a tree. Tree is a place where different types of animals live. Some very small plants also grow on the barks of trees. Trees are habitats for most of the Animals. ...

Anti-oxidants: Antioxidants-definition Substances that can prevent oxidation, which means it prevents the damage to the cell. It causes damage by forming free radicals which leads to chain reaction to environmental and other pressures. What do Antioxidants do in our body: Antioxidants boost overall health of the body. It neutralises the free radicals and can reduce Oxidative stress. It prevents from many diseases. It prevents heart disease, cancer, arthritis, stroke, respiratory diseases and other inflammatory or ischemic conditions. Sources of Antioxidants: Mostly we can find Antioxidants in plant based foods like fruits and vegetables.  In almost all food items which we eat contains Antioxidants. Dairy products. Eggs Meat Liver Nuts and seeds Fruits and vegetables Berries Bright colored vegetables and fruits Spinach Egg plant           And more such food items contains Antioxidants. 

PROTOXYLEM:  The first formed primary xylem is called protoxylem METAXYLEM: The later formed primary xylem is considered as metaxylem. EXARCH: If protoxylem lies towards centre that is towards pith and metaxylem lies towards periphery then type of primary xylem is called exarch. ENDARCH: If protoxylem is towards periphery and metaxylem is towards centre(pith) then such arrangement of primary xylem is called as endarch.

PROTOPHLOEM: The phloem containing narrow sieve tubes. such first formed primary phloem is considered as protophloem. METAPHLOEM: Phloem containing larger sieve tubes. such later formed phloem is called metaphloem.

ARRANGEMENTS IN VASCULAR BUNDLES RADIAL: When xylem and phloem in a vascular bundles are arranged in alternate manner on different radii then such arrangement is called Radial arrangement. CONJOINT: Xylem and Phloem when arranged on same radii in the vascular bundles is considered as Conjoint. OPEN: When xylem and phloem are seperated by vascular cambium. Such arrangement with cambium is considerd as Open vascular bundles as in Dicots. CLOSED:  Vascular cambium is absent in between the xylem and phloem such arrangement of vascular bundles with no cambium is called Closed vascular bundles as in Monocots.

 TWO MAIN DIFFERENCES BETWEEN C3 AND C4 PLANTS: There are two main differences which exhibits in C3 and C4 plants internally. They are: 1. Kranz anatomy in C4 plants and absent in C3 plants. 2. Photorespiration in C3 plants and absent in C4 plants. Now this explanation will help you to understand the differences. In C4 plants, internal strucutre of leaf has bundle sheath cells around the vascular bundlles. Such anatomy of leaves are considered as Kranz anatomy . The cells contain chloroplast and it is impervious to gases exchange and no intercellular spaces in it. In C3 plants photorespiration process takes place. It is stated that photorespiration is a wasteful process because it does not yield ATP and NADPH but rather it utilises ATP to release CO2. In C4 plants it lacks because they have a mechanism that increase CO2 concentration and has a capacity to minimise the oxygenase activity. so in  C4 plants productivity and yield is better th...