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.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 2.
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 3.
Give examples of egg laying mammals
Q 4.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 5.
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 6.
Why do we classify organisms?
Q 7.
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 8.
Who wrote the book
The Origin of Species?
Q 9.
Give examples of bryophytes.
Q 10.
Name the phylum to which Start fish and Sea urchin belong to?
Q 11.
Give three examples of animals belong to Echinodermata
Q 12.
Give three examples of Amphibians.
Q 13.
Give examples of animals belong to Nematoda.
Q 14.
How is a body of Arthropods segmented?
Q 15.
Give examples of organisms which belong to Phylum Protochordata.
Q 16.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 17.
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 18.
On what basis plants are divided into two sub-kingdoms?
Q 19.
How Phanerogams are divided further chiefly?
Q 20.
What are naked-seeded plants are called?
Q 22.
How do poriferan animals differ from coelenterate animals?
Q 23.
Name the largest group (phylum) of animals.
Q 24.
What is the type of circulatory system present in Arthropods?
Q 25.
What is a notochord? What does it do?
Q 26.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 27.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 28.
Which is the largest group of animals?
Q 29.
Give three examples of Molluscs
Q 30.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 31.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 32.
What do you mean by biodiversity?
Q 33.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 34.
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 35.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 36.
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 37.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 38.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 39.
Write the differences between monocots and dicots.
Q 40.
Name a parasitic disease caused by members of Nematoda.
Q 41.
Leeches and Earthworms belong to which phylum?
Q 42.
Why are Bats and whales classified as mammals?
Q 43.
In which Kingdom, an organism does not have a well defined nucleus and organelles?
Q 44.
Do Protozoans have eyes?
Q 45.
Which division of plants are often called amphibians of the plant kingdom?
Q 46.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 47.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 48.
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 49.
Give two examples of Pteridophyes
Q 50.
What are the advantages of classification?
