Question:
Why do we classify organisms?
Answer:
Classification helps us understand biodiversity better way. Biodiversity has direct and indirect economic benefits to humans as well as to our ecosystem. A systematic study of such biodiversity is essential to better understand the inter-relationships in our ecosystems. Following are the needs to classify them:
- Plants and animals have valuable genetic variation information. It will help us understand the ways evolution take place.
- Humans often benefit from plants and animals in different ways. A systematic study will help to explore other potential benefits.
- Certain species warn us of imbalances in our ecosystem. e.g. white-rumped vultures became almost extinct because of use of drug burfen (diclofenac) in domestic animals. When vultures ate these dead animals, it led to their kidney failures. A systematic study of the organisms would help in restoring the balance in their ecosystems.
- Plants and animals have been the inspiration for technology and engineering design. e.g. SONARS and RADARS work on the same acoustics principles as used by bats. Classification will help us revealing such more inspirations.
- It is estimated that the Earth has almost 8.8 million animal, plant, and fungi species, but we’ve only discovered less than a one-fourth of this. Classification gives a system for identification of known and unknown organisms.
Diversity in Living Organisms
Q 1.
Name a reptile which has four chambered heart.
Q 2.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 3.
Give three examples of Protochordata animals.
Q 4.
Why bryophytes are called the amphibians of the plant kingdom?
Q 5.
Give examples of Arthropod animals.
Q 6.
Blue-green algae are classified with bacteria and placed in kingdom Monera.
Q 7.
List important characteristics (at least three) of bryophytes.
Q 8.
Which animal phylum is commonly called as flatworms?
Q 9.
Name the first animals (phylum) that have a true body cavity.
Q 10.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 11.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
Q 12.
Name the simplest of plants that do not have a well-differentiated body design.
Q 13.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 14.
Give examples of egg laying mammals
Q 15.
Based on evolution, primarily how organisms are categorised?
Q 16.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 17.
How do gymnosperms and angiosperms differ from each other?
Q 18.
How Angiosperms are divided further?
Q 19.
Write two important characteristics of sponges ?
Q 20.
Do sponges have a nervous system?
Q 21.
Name a parasitic disease caused by members of Nematoda.
Q 22.
Name the largest group (phylum) of animals.
Q 23.
Name the phylum to which this organism belongs. Write any two characteristic feature of the phylum.
Q 24.
What is a notochord? What does it do?
Q 25.
Name a symbiotic life form that grows on the bark of a tree as large, coloured patches.
Q 26.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 27.
Identify plant group which has parallel venation, scattered vascular bundles, flower petals/parts in multiple of three, fibrous roots.
Q 28.
Give two examples of Pteridophyes
Q 29.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 30.
Give three examples of animals belong to Echinodermata
Q 31.
What changes are evolved in limbs of aves?
Q 32.
Give an example of marsupial mammal
Q 34.
Who is known as the father of taxonomy?
Q 35.
Give three examples of the range of variations that you see in lifeforms around you.
Q 36.
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?
Q 37.
Which region of the earth is called the region of megadiversity?
Q 39.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 40.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 41.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 42.
According to the five-kingdom system, which kingdom contains organisms whose structure is composed of prokaryotic cells?
Q 43.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 44.
How are pteridophytes different from the phanerogams?
Q 45.
Who introduced the system of scientific nomenclature of organisms?
Q 46.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 47.
What type of circulatory system do Molluscs have?
Q 48.
Give an example of mammal that can fly.
Q 49.
What do you mean by biodiversity?
Q 50.
What are the advantages of classification?
