Question:
Define evolution.
Answer:
Evolution is a complex process by which the characteristics of living organisms change over generations to generations and the traits are passed from one generation to the next. One of the main reason for diversity in bio-life is attributed to evolution.
Diversity in Living Organisms
Q 1.
Name a reptile which has four chambered heart.
Q 2.
Give examples of Arthropod animals.
Q 3.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 4.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 5.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 6.
Give two examples of Gymnosperms.
Q 7.
In how many Phyla, the animal kingdom is divided into?
Q 8.
Give two examples of Pteridophyes
Q 9.
What are the advantages of classification?
Q 11.
Give examples of bryophytes.
Q 12.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 13.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 14.
Which division of plants are often called amphibians of the plant kingdom?
Q 15.
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 16.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 17.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 18.
Ambibian heart is divided into how many chambers?
Q 19.
What do you mean by biodiversity?
Q 20.
Give three examples of the range of variations that you see in lifeforms around you.
Q 21.
Which region of the earth is called the region of megadiversity?
Q 22.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 23.
(a) What are saprophytes?
(b) Name the kingdom to which they belong.
(c) What is the cell wall of fungi made up of?
Q 24.
Give examples of Thallophyta plants.
Q 25.
How are pteridophytes different from the phanerogams?
Q 26.
What are naked-seeded plants are called?
Q 27.
Give examples of Porifera or Sponges.
Q 28.
Animals belong to phylum Coelenterata are diploblastic. What do you mean by the term diploblastic?
Q 29.
Which animal phylum is commonly called as flatworms?
Q 30.
Which phylum is commonly called roundworms or pinworms?
Q 31.
Name the largest group (phylum) of animals.
Q 32.
What is the most striking feature of phylum Arthropoda?
Q 33.
How is a body of Arthropods segmented?
Q 34.
Name the phylum to which Start fish and Sea urchin belong to?
Q 35.
Why are Bats and whales classified as mammals?
Q 36.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 37.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 38.
Name the two groups of Plantae that are commonly called phanerogams.
Q 39.
Which worms cause elephantiasis. Name the group it belongs to?
Q 40.
Give three examples of Molluscs
Q 41.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 42.
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 43.
What is the primary characteristic on which the first division of organisms is made?
Q 44.
On what bases are plants and animals put into different categories?
Q 45.
Who wrote the book
The Origin of Species?
Q 46.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 47.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 48.
Name the organisms which are outside the classification.
Q 49.
What is Symbiotic? Give an example of organisms which exhibit this relationship.
Q 50.
On what basis plants are divided into two sub-kingdoms?
