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.
Why bryophytes are called the amphibians of the plant kingdom?
Q 3.
List important characteristics (at least three) of bryophytes.
Q 4.
How is locomotion brought in animals belonging to Mollusca phylum?
Q 5.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 6.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 7.
Give three examples of Molluscs
Q 8.
Based on evolution, primarily how organisms are categorised?
Q 9.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 10.
How Angiosperms are divided further?
Q 11.
Give examples of Porifera or Sponges.
Q 12.
Give examples of Arthropod animals.
Q 13.
Name the phylum to which this organism belongs. Write any two characteristic feature of the phylum.
Q 14.
Amar, Ujala and Anara wrote the scientic name of mango as follows. Who wrote it correctly.
Amar - Mangifera Indica
Ujala - Mangifera indica
Anara - mangifera indica
Q 15.
Will advanced organisms be the same as complex organisms? Why?
Q 16.
What is Symbiotic? Give an example of organisms which exhibit this relationship.
Q 17.
Which animal phylum is considered to be first triploblastic animals?
Q 18.
Name the simplest of plants that do not have a well-differentiated body design.
Q 19.
Pines and Deodar belong to which group of Plants?
Q 20.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 21.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 22.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 23.
Give three examples of Protochordata animals.
Q 24.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 25.
Four Chambered heart, mostly viviparous, skin covered with hairs, skin contains sweat and oil glands, four chambered heart. Which category of vertebrates are we talking about?
Q 26.
Give an example of marsupial mammal
Q 27.
Give an example of mammal that can fly.
Q 28.
Who is known as the father of taxonomy?
Q 29.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 30.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 31.
Which phylum is commonly called roundworms or pinworms?
Q 32.
Differentiate between Annelida and Nematode.
Q 33.
What is the type of circulatory system present in Arthropods?
Q 34.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 35.
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 36.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 37.
Identify plant group which has parallel venation, scattered vascular bundles, flower petals/parts in multiple of three, fibrous roots.
Q 38.
On what basis plants are divided into two sub-kingdoms?
Q 39.
How are pteridophytes different from the phanerogams?
Q 40.
Write two important characteristics of sponges ?
Q 41.
Which animal phylum is commonly called as flatworms?
Q 42.
What is the most striking feature of phylum Arthropoda?
Q 43.
Who introduced the system of scientific nomenclature of organisms?
Q 44.
Identify the division of Plantae having following characteristics:
i. Seeds not enclosed within fruit.
ii. Flowers represented as cones (unisexual)
iii. Ovules not located in ovary.
Q 45.
Which is the largest group of animals?
Q 46.
No scales on skin, mucus glands on skin, three chambered heart, respiration through gills, lungs and skin, oviparous, live on land and in water. Name the group of these vertebrates.
Q 47.
What is the primary reason for such a huge diversity we find in animals and plants?
Q 48.
What is the primary characteristic on which the first division of organisms is made?
Q 49.
Who wrote the book
The Origin of Species?
Q 50.
Name five countries that lie in the region of megadiversity.
