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.
Name the plants that are called "
First vascular land plants".
Q 2.
Give three examples of animals belong to Echinodermata
Q 3.
What is a notochord? What does it do?
Q 4.
Name a reptile which has four chambered heart.
Q 5.
Give examples of egg laying mammals
Q 6.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 7.
Which worms cause elephantiasis. Name the group it belongs to?
Q 8.
Give three examples of organisms that are arthopods.
Q 9.
Give three examples of flightless birds.
Q 10.
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 11.
Which animal phylum is commonly called as flatworms?
Q 12.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 13.
Which division of plants are often called amphibians of the plant kingdom?
Q 14.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 15.
Algae belongs to which division of Plantae?
Q 16.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 17.
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 18.
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 19.
Give an example of mammal that can fly.
Q 20.
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 21.
On what bases are plants and animals put into different categories?
Q 22.
Who wrote the book
The Origin of Species?
Q 23.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 24.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 25.
Give examples of bryophytes.
Q 26.
Which phylum is commonly called roundworms or pinworms?
Q 27.
Differentiate between Annelida and Nematode.
Q 28.
How is a body of Arthropods segmented?
Q 29.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 30.
Name the phylum to which Start fish and Sea urchin belong to?
Q 31.
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 32.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 33.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 34.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 35.
What do you mean by biodiversity?
Q 36.
Will advanced organisms be the same as complex organisms? Why?
Q 37.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 38.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 39.
Give examples of Thallophyta plants.
Q 40.
How Phanerogams are divided further chiefly?
Q 41.
What are naked-seeded plants are called?
Q 42.
How Angiosperms are divided further?
Q 43.
Write the differences between monocots and dicots.
Q 45.
Identify the phylum having following characteristics:
Q 46.
What are four main features of phylum coelenterates?
Q 47.
Animals belong to phylum Coelenterata are diploblastic. What do you mean by the term diploblastic?
Q 48.
Give examples of animals belong to Nematoda.
Q 49.
Name a parasitic disease caused by members of Nematoda.
Q 50.
Leeches and Earthworms belong to which phylum?
