Question:
Give three examples of the range of variations that you see in lifeforms around you.
Answer:
The present bio-diversity is the outcome of millions of years of evolution. We find various kinds of range of variations among bio-life such as:
- Variation in terms of size: Microorganisms are very small of the size of micrometres to 100m high large redwood trees and blue whales (30 meters in length).
- Variations in terms of age: Some organisms like mosquitoes do not live more than two days while animals like tortoise and elephants live up to 100 years.
- Variations in terms of nutrition: Some animals are herbivores, others are carnivores or omnivores.
- Variations in colours: Worms are colourless, on the other hand flowers, butterflies, different types of birds are full of colours.
Diversity in Living Organisms
Q 1.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 2.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 3.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 4.
Give three examples of Molluscs
Q 5.
Why do we classify organisms?
Q 6.
What are naked-seeded plants are called?
Q 8.
What is the primary characteristic on which the first division of organisms is made?
Q 9.
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 10.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 11.
Give examples of Porifera or Sponges.
Q 12.
Name the largest group (phylum) of animals.
Q 13.
Give examples of Arthropod animals.
Q 14.
How do annelid animals differ from arthropods?
Q 15.
Give examples of animals that belong to Phylum Mollusca.
Q 16.
Name the phylum to which this organism belongs. Write any two characteristic feature of the phylum.
Q 17.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 18.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 19.
Ambibian heart is divided into how many chambers?
Q 20.
What changes are evolved in limbs of aves?
Q 21.
Give an example of marsupial mammal
Q 22.
Give three examples of the range of variations that you see in lifeforms around you.
Q 23.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 24.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 25.
Name the organisms which are outside the classification.
Q 26.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 27.
How Phanerogams are divided further chiefly?
Q 28.
Define Cryptograms.
Q 29.
What is the most striking feature of phylum Arthropoda?
Q 30.
Give examples of organisms which belong to Phylum Protochordata.
Q 31.
Do Protozoans have eyes?
Q 32.
Name the simplest of plants that do not have a well-differentiated body design.
Q 33.
Name the two groups of Plantae that are commonly called phanerogams.
Q 34.
Give two examples of Bryophyta plants?
Q 35.
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 36.
Which worms cause elephantiasis. Name the group it belongs to?
Q 37.
Give three examples of organisms that are arthopods.
Q 38.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 39.
Give examples of egg laying mammals
Q 40.
Why is there a need for classification and systematic naming of living organisms?
Q 41.
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 42.
What is the primary characteristic on which the first division of organisms is made?
Q 45.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 46.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 47.
Give examples of Thallophyta plants.
Q 48.
Why are Thallophytes called non-embryonic plants?
Q 49.
Give two examples of Gymnosperms.
Q 50.
How do gymnosperms and angiosperms differ from each other?
