Question:
Which do you think is a more basic characteristic for classifying organisms?(a) the place where they live.(b) the kind of cells they are made of. Why?
Answer:
Option (b) the kind of cells they are made of, is the more basic characteristic for classifying organisms. It is for the following reasons:
- Classifying organisms based on habitat is misleading. Apart from common habitat, there are no other common features among them. e.g. Lion and Rabbit both live on land but they differ from each other a lot. Further, sub-classification is not possible.
- Cells are the functional and structural unit of life. Primarily we can differentiate organisms are unicellular and multicellular. Further sub-classification or logical sequence is possible based on cell types, its complexity etc.
Diversity in Living Organisms
Q 1.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 2.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 3.
Why do we classify organisms?
Q 5.
Give examples of Arthropod animals.
Q 6.
Give three examples of flightless birds.
Q 7.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 8.
How Phanerogams are divided further chiefly?
Q 9.
How do annelid animals differ from arthropods?
Q 10.
Identify the plant groups which has net like veins in leaves, flower parts in group of fours or fives, vascular bundles are in a ring and two seed leaves.
Q 12.
In the hierarchy of classification, which grouping will have the smallest number of organisms with a maximum of characteristics in common and which will have the largest number of organisms?
Q 13.
In which kingdom you will place an organism which is multicellular, eukaryotic, non-green heterotroph or saprophytic, lacks chlorophyll and has an absorptive mode of nutrition?
Q 14.
On what basis plants are divided into two sub-kingdoms?
Q 15.
Name the phylum to which Start fish and Sea urchin belong to?
Q 16.
Which in your opinion is more basic characteristic for classifying organism. The place where they live in or the kind of cells they are made of?
Q 17.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 18.
Do Protozoans have eyes?
Q 19.
Algae belongs to which division of Plantae?
Q 20.
Identify plant group which has parallel venation, scattered vascular bundles, flower petals/parts in multiple of three, fibrous roots.
Q 21.
Give two examples of Bryophyta plants?
Q 22.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 23.
Which worms cause elephantiasis. Name the group it belongs to?
Q 24.
Ambibian heart is divided into how many chambers?
Q 25.
On what bases are plants and animals put into different categories?
Q 26.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Q 27.
Give examples of Thallophyta plants.
Q 28.
What are naked-seeded plants are called?
Q 29.
What are the general characteristics found in all animals?
Q 30.
Which animal phylum is commonly called as flatworms?
Q 31.
Which phylum is commonly called roundworms or pinworms?
Q 32.
What is the type of circulatory system present in Arthropods?
Q 33.
What is a notochord? What does it do?
Q 34.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
Q 35.
Which is the largest group of animals?
Q 36.
Give three examples of Protochordata animals.
Q 37.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 38.
What are the advantages of classification?
Q 40.
Will advanced organisms be the same as complex organisms? Why?
Q 41.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 42.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 43.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 44.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 45.
Name the organisms which are outside the classification.
Q 46.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 47.
What are the uses of bryophytes?
Q 48.
Define Cryptograms.
Q 49.
Write two important characteristics of sponges ?
Q 50.
Give examples of Porifera or Sponges.
