30 Questions
What are the merits of Whittaker's five kingdom classification system?
Clear separation of major groups, accommodating diverse organisms
What are the demerits of Whittaker's five kingdom classification system?
Lack of clarity in distinguishing between kingdoms, oversimplification of complex relationships
What is the size range of bacteria?
1 mm to 10 mm
How do bacteria reproduce?
By simple binary fission
Where are protozoa found?
In soil, fresh water, sea water, and in the body of other organisms
How do protozoa reproduce?
By simple cell division
What is the main concept embodied in Archemedes Principle?
Buoyancy
How is the buoyant force related to the weight of the fluid displaced by an object?
Equal
What did Archemedes discover when he entered a bath tub?
Buoyancy principle
What did Archemedes shout when he made his discovery in the bath tub?
Eureka
How has Archemedes Principle been utilized in the construction of ships and submarines?
Construction
What force acts on an object immersed in a fluid according to Archemedes Principle?
Buoyant force
What is the smallest particle of the substance?
Atom
Who stated that the smallest particles of matter are named 'Paramanu'?
Indian philosopher Kanad
According to Democritus, what is the smallest particle of matter called?
Atom
What is the formula for water?
H2O
What is the chemical formula for methane?
CH4
What type of matter is composed of a single type of atom in the molecule?
Element
What is electrostatic potential?
Electrostatic potential is the electric level deciding the direction of flow of electric charges.
Explain the concept of potential difference.
Potential difference is the difference between the potential of two points, determining the flow of electric charges.
How is current produced in electric cells like a car battery?
Current is produced by the flow of both negatively and positively charged particles.
In which direction does heat flow?
Heat flows from a body at higher temperature to a body at lower temperature.
What happens when a dry cell is connected in a circuit?
When a dry cell is connected in a circuit, electrons flow from the negative terminal to the positive terminal, causing current to flow.
Why is no current seen to flow in the bulb initially?
No current is seen initially because there is no potential difference to drive the flow of electrons in the circuit.
What are the symbols used for the shells which accommodate the electrons in various atoms?
K, L, M, N, O, P, Q
What is the symbol and ordinal number of the innermost shell?
K shell, 1st shell
Write the symbol of electron distribution in the shell of a fluorine atom.
2-7
Which is the outermost shell of a fluorine atom?
N shell
Which is the outermost shell of a sodium atom?
M shell
Which is the outermost shell of a hydrogen atom?
K shell
Learn about the merits and demerits of Whittaker's classification system, particularly focusing on the classification of microorganisms based on their size. Understand how microorganisms are categorized as Eukaryotes, Prokaryotes, Bacteria, and Protista.
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