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.
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.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 4.
Why do we classify organisms?
Q 5.
What are the general characteristics found in all animals?
Q 7.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 8.
Give examples of Porifera or Sponges.
Q 9.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
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 11.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 12.
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 13.
What are naked-seeded plants are called?
Q 14.
Define Cryptograms.
Q 15.
Give examples of animals that belong to Phylum Mollusca.
Q 16.
Minimal body design, have holes which lead to canal system that helps in circulating water, marine habitat. Which division of Animalia it refers to?
Q 17.
Give three examples of Molluscs
Q 18.
Name a reptile which has four chambered heart.
Q 19.
Give three examples of flightless birds.
Q 20.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 21.
Blue-green algae are classified with bacteria and placed in kingdom Monera.
Q 22.
What are the uses of bryophytes?
Q 23.
How Angiosperms are divided further?
Q 24.
Give examples of Arthropod animals.
Q 25.
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 26.
What is the primary characteristic on which the first division of organisms is made?
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 Bryophyta plants?
Q 29.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 30.
Which is the largest group of animals?
Q 31.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 32.
Give an example of mammal that can fly.
Q 33.
Who is known as the father of taxonomy?
Q 34.
What is the primary reason for such a huge diversity we find in animals and plants?
Q 35.
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 36.
On what bases are plants and animals put into different categories?
Q 37.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Q 38.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 39.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 40.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 41.
Name the organisms which are outside the classification.
Q 42.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 43.
Give examples of bryophytes.
Q 44.
Name the plants that are called "
First vascular land plants".
Q 45.
Give two examples of Gymnosperms.
Q 46.
How do gymnosperms and angiosperms differ from each other?
Q 47.
Do sponges have a nervous system?
Q 48.
Identify the phylum having following characteristics:
Q 49.
Which animal phylum is considered to be first triploblastic animals?
Q 50.
Write important features about Phylum Platyhelminthes.
