Question:
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Answer:
Classification systems as proposed by Linnaeus use a hierarchical system in which organisms are placed into groups, at different levels, according to the features they share. These groups or levels are(from top to bottom):
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
Species is the lowest level in which group, we find the highest level of similarities and All members of a species are capable of interbreeding.
✍ How to memorise classification levels? King ➤ Phil-nnaeus ➤ Classed ➤ Ordinary ➤ Families as ➤ Generous and ➤ Special Kingdom ➤ Phylum ➤ Class ➤ Order ➤ Family ➤ Genus ➤ Species
Diversity in Living Organisms
Q 1.
Give examples of Arthropod animals.
Q 2.
Name a reptile which has four chambered heart.
Q 3.
Give two examples of Gymnosperms.
Q 4.
What are the advantages of classification?
Q 5.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 6.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 7.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 8.
How is a body of Arthropods segmented?
Q 9.
What is the most striking feature of phylum Arthropoda?
Q 10.
What is the primary characteristic on which the first division of organisms is made?
Q 11.
Give three examples of Molluscs
Q 12.
Give three examples of the range of variations that you see in lifeforms around you.
Q 14.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 15.
Why are Thallophytes called non-embryonic plants?
Q 16.
Give examples of bryophytes.
Q 17.
Give examples of Porifera or Sponges.
Q 18.
Which animal phylum is considered to be first triploblastic animals?
Q 19.
How is locomotion brought in animals belonging to Mollusca phylum?
Q 20.
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 22.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 24.
On what basis plants are divided into two sub-kingdoms?
Q 25.
In how many Phyla, the animal kingdom is divided into?
Q 26.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 27.
Give the scientific names of tiger, peacock, ant, neem, lotus and potato.
Q 28.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 29.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 30.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 31.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 32.
Give an example of marsupial mammal
Q 33.
What do you mean by biodiversity?
Q 34.
Who wrote the book
The Origin of Species?
Q 35.
Name the book written by Carolus Linnaeus on the classification of organisms.
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.
Why bryophytes are called the amphibians of the plant kingdom?
Q 38.
List important characteristics (at least three) of bryophytes.
Q 39.
What are the uses of bryophytes?
Q 40.
How are pteridophytes different from the phanerogams?
Q 41.
What are naked-seeded plants are called?
Q 42.
Define Cryptograms.
Q 43.
How do gymnosperms and angiosperms differ from each other?
Q 44.
What are the general characteristics found in all animals?
Q 45.
Which animal phylum is commonly called as flatworms?
Q 46.
Which phylum is commonly called roundworms or pinworms?
Q 47.
Differentiate between Annelida and Nematode.
Q 48.
Name the largest group (phylum) of animals.
Q 49.
What is the type of circulatory system present in Arthropods?
Q 50.
How do annelid animals differ from arthropods?
