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.
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.
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 9.
How do annelid animals differ from arthropods?
Q 10.
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 11.
Do Protozoans have eyes?
Q 12.
Give two examples of Bryophyta plants?
Q 13.
Ambibian heart is divided into how many chambers?
Q 14.
On what bases are plants and animals put into different categories?
Q 16.
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 17.
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 18.
How Phanerogams are divided further chiefly?
Q 19.
What are the general characteristics found in all animals?
Q 20.
What is the type of circulatory system present in Arthropods?
Q 21.
Name the phylum to which Start fish and Sea urchin belong to?
Q 22.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 23.
Algae belongs to which division of Plantae?
Q 24.
Identify plant group which has parallel venation, scattered vascular bundles, flower petals/parts in multiple of three, fibrous roots.
Q 25.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 26.
Which is the largest group of animals?
Q 27.
Which worms cause elephantiasis. Name the group it belongs to?
Q 28.
Give three examples of Protochordata animals.
Q 29.
What are the advantages of classification?
Q 30.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Q 31.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 32.
Give examples of Thallophyta plants.
Q 33.
On what basis plants are divided into two sub-kingdoms?
Q 34.
What are naked-seeded plants are called?
Q 35.
Give examples of Porifera or Sponges.
Q 36.
Which animal phylum is commonly called as flatworms?
Q 37.
Which phylum is commonly called roundworms or pinworms?
Q 38.
How is a body of Arthropods segmented?
Q 39.
Give examples of animals that belong to Phylum Mollusca.
Q 40.
What is a notochord? What does it do?
Q 41.
Why are Bats and whales classified as mammals?
Q 42.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
Q 43.
What is the mode of nutrition in Mushroom?
Q 44.
Which division of plants are often called amphibians of the plant kingdom?
Q 45.
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 46.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 47.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 48.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 49.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 50.
Name the fish having skeleton made of both bone and cartilage.
