Question:
Why is there a need for classification and systematic naming of living 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.
Give examples of Arthropod animals.
Q 2.
On what bases are plants and animals put into different categories?
Q 3.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 4.
Name the kingdom which includes the simplest form of eukaryotes.
Q 5.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 6.
Name five countries that lie in the region of megadiversity.
Q 7.
Name a parasitic disease caused by members of Nematoda.
Q 8.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 9.
Name a reptile which has four chambered heart.
Q 10.
(a) What are saprophytes?
(b) Name the kingdom to which they belong.
(c) What is the cell wall of fungi made up of?
Q 11.
Why are Thallophytes called non-embryonic plants?
Q 12.
How are pteridophytes different from the phanerogams?
Q 13.
Who introduced the system of scientific nomenclature of organisms?
Q 14.
Name the simplest of plants that do not have a well-differentiated body design.
Q 15.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 16.
Give two examples of Pteridophyes
Q 17.
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 18.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 19.
Give three examples of Protochordata animals.
Q 20.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 21.
Give three examples of flightless birds.
Q 22.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 23.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 24.
List important characteristics (at least three) of bryophytes.
Q 25.
Give two examples of Gymnosperms.
Q 26.
How Angiosperms are divided further?
Q 27.
What are four main features of phylum coelenterates?
Q 28.
How is a body of Arthropods segmented?
Q 29.
How is locomotion brought in animals belonging to Mollusca phylum?
Q 30.
What is a notochord? What does it do?
Q 31.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 32.
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 33.
Give two examples of Bryophyta plants?
Q 34.
Give three examples of Molluscs
Q 35.
Give three examples of animals belong to Echinodermata
Q 36.
Ambibian heart is divided into how many chambers?
Q 37.
Give three examples of Amphibians.
Q 38.
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 39.
Why do we classify organisms?
Q 40.
Give three examples of the range of variations that you see in lifeforms around you.
Q 42.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 43.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 44.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 45.
Write two important characteristics of sponges ?
Q 46.
Which animal phylum is commonly called as flatworms?
Q 47.
Which phylum is commonly called roundworms or pinworms?
Q 48.
What is the most striking feature of phylum Arthropoda?
Q 49.
What is the type of circulatory system present in Arthropods?
Q 50.
How do annelid animals differ from arthropods?
