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.
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 4.
What are naked-seeded plants are called?
Q 5.
On what basis plants are divided into two sub-kingdoms?
Q 7.
What are the general characteristics found in all animals?
Q 9.
Algae belongs to which division of Plantae?
Q 10.
Identify plant group which has parallel venation, scattered vascular bundles, flower petals/parts in multiple of three, fibrous roots.
Q 11.
Ambibian heart is divided into how many chambers?
Q 12.
Why do we classify organisms?
Q 13.
How Phanerogams are divided further chiefly?
Q 14.
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 15.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
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 will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 18.
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 19.
Give examples of Arthropod animals.
Q 20.
How do annelid animals differ from arthropods?
Q 21.
Why are Bats and whales classified as mammals?
Q 22.
Give examples of the organisms that have cilia and flagellum for moving around.
Q 23.
Give two examples of Pteridophyes
Q 24.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 25.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 26.
Which is the largest group of animals?
Q 27.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 28.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 29.
Give examples of Thallophyta plants.
Q 30.
How do poriferan animals differ from coelenterate animals?
Q 31.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 32.
Give two examples of Bryophyta plants?
Q 33.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 34.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 35.
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 36.
Give three examples of flightless birds.
Q 37.
Give examples of egg laying mammals
Q 38.
Give an example of mammal that can fly.
Q 39.
What do you mean by biodiversity?
Q 41.
Who wrote the book
The Origin of Species?
Q 42.
Will advanced organisms be the same as complex organisms? Why?
Q 43.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 44.
Why are Thallophytes called non-embryonic plants?
Q 45.
Which division among plants has the simplest organisms?
Q 46.
Why bryophytes are called the amphibians of the plant kingdom?
Q 47.
What are the uses of bryophytes?
Q 48.
Write the differences between monocots and dicots.
Q 49.
In how many Phyla, the animal kingdom is divided into?
Q 50.
Which animal phylum is commonly called as flatworms?
