Science Factsheet -1

1. All living organism mostly use solar energy sources for its sustain, like light, wind, etc.


2. A living organism can be distinguished from non-living organism on the basis of three broader characters:

(a). Growth.

(b). Reproduction.

(c). Metabolism.


3. "Study of fossils" -Palaentology.


4. "Study of Algae" -Phycology.


5. "Study of Fungi" -Mycology.


6. "Father of Taxonomy" -Carolous Linnaeus (gave two kindom - Planate & Animalia, classification).


7. Five Kingdom Classification was proposed in 1969 by -R. H. Whittaker.


8. There are five criteria of classifying organism into Whittaker`s kingdom classification: 

(a). Complexity of cell structure.

(b). Complexity of body of organism.

(c). Mode of nutrition.

(d). Life style.

(e). Phylogenetic relationship.


9. Five Kingdoms are:

(a). Monera -eg. Bacteria, Cynobacteria, Archiobacteria, etc.

(b). Protista -eg. Flagellates, Protozoa, Euglena, etc.

(c). Fungi -eg. Mushroom, Mucor, Albugo, etc.

(d). Planatae -all plants are included except plants belonging to above three kingdoms.

(e). Animalia -all animals are included except protozoan.


10. Phylogenetic is the study of evolutionary history and relationship among or within groups of organisms. These relationships are determined by phylogenetic inference methods that focus on observed heritable traits such as DNA sequences, protein-amino acid sequences or morphology.


11. Autotrophs, are known as producers because they are able to make their own food from natural raw materials and energy. So, they convert an abiotic source of energy into enery stored in organic compounds, which can be used by other organisms. eg. Plants, Algae & some type of Bacteria.


12. Hetrotrophs are known as consumers, because they consume producers or other consumers. eg. dogs, birds, fish, tigers, humans, etc, So, they cannot produce their own food and depend upon autotrophs for nutrition.


13. Euglenoids are unicellular micro-organisms, that have a flexible body. They possess the characteristic features of plants and animals. It is important to note that, Euglena has plastids and performs photosynthesis in light, but moves around in search of food using its flagellum at night.


 

Books for References

1. Encyclopaedia of General Science for General Competitions

2. Lucent General Science Latest Edition

3. 5000+ General Science Chapter-wise MCQs with Detailed Explanations for Competitive Exams

4. Knowledge Encyclopaedia - Science

 

Also see:

1. 10 Minutes Focus Theory for Controlling Mind

2. Why we cannot hear sound in Space?

3. How does a Compass work? 

4. UGC NET JRF Latest Syllabus 

5. UPSC Content

 

 

Science Factsheet Index

Exam Oriented One Liners

Powered by -Creature History


Comments

Post a Comment

Popular posts from this blog

10 Minutes Focus Theory for Controlling Mind

Image
Hello everyone, most of us specially students are complaining about the lack of concentration, specially about their inability to complete scheduled study time table. There are many reasons for this phenomenon in general, if we will going to discuss those; but here we are trying to provide a solution with taking minimum time of yours. So, let's directly focused on method and solution. This method is call , 10 Minutes Focus Theory for Controlling Mind , basically I started this method on myself some time back and I found good results from this. That's why I am sharing this with all of you on my blog.  In this method, when you are bored or lost interest from work or study, you should have to take extra 10 minute time for ending work,  reading or studying or something else. You have to say to yourself that,  ' I am taking these LAST 10 Minutes and after that I stop doing this work, but in these 10 minutes, I must give my 101%; so, I have to forget whole World for ONLY these 1
Read more

What is Electromagnet and it's Applications?

Image
Welcone back friends in the World of Why and How with your host - Science Cinch . Today we will see some astonishing characteristics and use of electromagnets. Let's begin! Most of us noticed that, a compass needle usually point North & South directions, if there are no other magnets near it. But, if there are magnets near compass, the needle will be attracted towards them and will point in a different direction or be deflected. Similarly, if a compass was held near a wire carrying an electric current, the needle was deflected. But if the current was switched off the needle swung back and pointed North-South again. This meant that the current passing through the wire produces a magnetic field. This is Ampere's law, which states that the magnetic field created by an electric current is proportional to the size of that electric current, with a constant of proportionality equal to the permeability of free space. Electromagnets uses this concept, usually an electromagnet consis
Read more

How does a Compass work?

Image
A magnet will always point North-South direction, because it is attracted by the north and south magnetic poles of the planet Earth. This property is used in a compass. A small needle-like magnet with its north and south poles marked is balanced on a pivot. The pivot is placed in the centre of a card with all the directions (or points of the compass) marked on it. If a traveller or person positions the compass so that the needle lies along the north-south line on the card, he can read off the direction in which he is going. Compass is very useful. For example, long ago in past, sailors of all around the World were navigate by using the Sun’s position in Daytime and Star’s position in Night time. But, sometimes, it was too cloudy for them to see the Sun or the Stars and so they did not know which way they have to go. The compass revolutionized sea travel because the sailors could find their way whatever the weather is. A compass needle points to the Earth`s magnetic poles. The navigator
Read more