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.
What do you mean by biodiversity?
Q 3.
Give examples of bryophytes.
Q 4.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 6.
What are naked-seeded plants are called?
Q 7.
Give examples of Arthropod animals.
Q 8.
Write important features about Phylum Platyhelminthes.
Q 9.
How do poriferan animals differ from coelenterate animals?
Q 10.
Identify the Animalia group having following features:
Q 11.
Who is known as the father of taxonomy?
Q 12.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 13.
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 14.
Give two examples of Gymnosperms.
Q 15.
In how many Phyla, the animal kingdom is divided into?
Q 16.
Differentiate between Annelida and Nematode.
Q 17.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 18.
Which division of plants are often called amphibians of the plant kingdom?
Q 19.
Give three examples of Molluscs
Q 20.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 21.
Give three examples of flightless birds.
Q 22.
Give an example of mammal that can fly.
Q 23.
Give three examples of the range of variations that you see in lifeforms around you.
Q 24.
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 25.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 26.
What are the general characteristics found in all animals?
Q 27.
What is the most striking feature of phylum Arthropoda?
Q 28.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 29.
Name the two groups of Plantae that are commonly called phanerogams.
Q 30.
What is the primary reason for such a huge diversity we find in animals and plants?
Q 31.
Name the organisms which are outside the classification.
Q 32.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 33.
Why are Thallophytes called non-embryonic plants?
Q 34.
On what basis plants are divided into two sub-kingdoms?
Q 35.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 36.
Animals belong to phylum Coelenterata are diploblastic. What do you mean by the term diploblastic?
Q 37.
How is a body of Arthropods segmented?
Q 38.
Name the phylum to which Start fish and Sea urchin belong to?
Q 39.
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 40.
Name the simplest of plants that do not have a well-differentiated body design.
Q 41.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 42.
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 43.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 44.
Ambibian heart is divided into how many chambers?
Q 45.
Name the fish having skeleton made of both bone and cartilage.
Q 46.
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 47.
Give an example of marsupial mammal
Q 48.
What are the advantages of classification?
Q 49.
On what bases are plants and animals put into different categories?
Q 50.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
