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.
Name the kingdom which includes the simplest form of eukaryotes.
Q 4.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 5.
Name five countries that lie in the region of megadiversity.
Q 6.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 7.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 8.
Name a reptile which has four chambered heart.
Q 9.
(a) What are saprophytes?
(b) Name the kingdom to which they belong.
(c) What is the cell wall of fungi made up of?
Q 10.
Why are Thallophytes called non-embryonic plants?
Q 11.
How are pteridophytes different from the phanerogams?
Q 12.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 13.
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 14.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 15.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 16.
Give three examples of flightless birds.
Q 17.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 18.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 19.
Give two examples of Gymnosperms.
Q 20.
How Angiosperms are divided further?
Q 21.
Name a parasitic disease caused by members of Nematoda.
Q 22.
Who introduced the system of scientific nomenclature of organisms?
Q 23.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 24.
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 25.
Give two examples of Bryophyta plants?
Q 26.
Give three examples of Molluscs
Q 27.
Give three examples of animals belong to Echinodermata
Q 28.
Give three examples of Protochordata animals.
Q 29.
Ambibian heart is divided into how many chambers?
Q 30.
Give three examples of Amphibians.
Q 31.
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 33.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 34.
List important characteristics (at least three) of bryophytes.
Q 35.
Write two important characteristics of sponges ?
Q 36.
Which animal phylum is commonly called as flatworms?
Q 37.
What is the most striking feature of phylum Arthropoda?
Q 38.
How is a body of Arthropods segmented?
Q 39.
How do annelid animals differ from arthropods?
Q 40.
How is locomotion brought in animals belonging to Mollusca phylum?
Q 41.
Name the phylum to which Start fish and Sea urchin belong to?
Q 42.
What is a notochord? What does it do?
Q 43.
Name the simplest of plants that do not have a well-differentiated body design.
Q 44.
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 45.
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 46.
What type of circulatory system do Molluscs have?
Q 47.
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 48.
Why do we classify organisms?
Q 49.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 50.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
