Steam produces more burns than boiling water because the latent heat of fusion of steam is greater than water.

Silver revolution is the practice of raising poultry, such as chickens, turkeys, ducks and geese.

Taxonomy is the theoretical study of classification including its basic principles, procedures and rules.

A parallel beam of light is made to fall on the concave mirror. This mirror focuses the light beam on a small area of the body like teeth, throat etc. So concave mirrors are used by dentists.

  Water, glass.

Adulterants are undesirable substances added to the food against the food safety standards.

1. Laws of conservation of mass:
In a chemical change the total mass of the reactant is equal to the total mass of the products.
2. Law of definite proportion:
"A pure chemical compound prepared by any method consists of the same elements combined together in the fixed proportion by mass".
3. Law of multiple proportion: 
When two elements A and B combine together to form more than one compound, then masses of A which separately combines with a fixed mass of B are in simple ratio.
4. Laws of Reciprocal proportion:
"If two elements combine separately the same weight of a third element, the ratios of the masses in which they do so are either the same or a simple multiple of the mass ratio in which they combine.
5. Gay Lussac's law of combining volumes:
Whenever gases react together, the volumes of the reacting gases as well as the products bear a simple whole number ratio, provided all the volumes are measured under similar conditions of temperature and pressure.

Stomata

Non-directional response of a plants part to stimulus is known as nastic movement.

Celsius = (F – 32) × \(\frac{5}{9}\)= (104 - 32) ×\(\frac{5}{9}\) = 72 × \(\frac{5}{9}\) = 40°C.

Certain soilds change directly to gas without passing through the liquid state. The direct change of a solid to gas is called sublimation.
Example: dry ice, naphthalene, iodine.

Full form of SI system is "International system of units"

A series of organisms each dependent on the next as a source of food. This link is called as food chain.

1. Stomatal transpiration
2. Cuticular transpiration
3. Lenticular transpiration.

Leucaena sp. is an example for nictinasty

Peter Boysen - Jensen discovered the plant hormone auxin.

Guard cells surrounds the stomata.

  The covered part of the leaf does not turn blue-black because the leaf did not receive the sunlight and unable to synthesize starch.

'Photo' means 'light' and 'synthesis' means 'to build' thus photosynthesis literally means "building up with the help of light". During this process, the light energy is converted into chemical energy. Green plants are autotrophic in their mode of nutrition because they prepare their food materials through a process called photosynthesis.

The loss of water in the form of water vapour from the aerial parts of the plant body is called transpiration.