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.
Give examples of Arthropod animals.
Q 2.
On what bases are plants and animals put into different categories?
Q 3.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 4.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 5.
Name the kingdom which includes the simplest form of eukaryotes.
Q 6.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 7.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 8.
(a) What are saprophytes?
(b) Name the kingdom to which they belong.
(c) What is the cell wall of fungi made up of?
Q 9.
Name a parasitic disease caused by members of Nematoda.
Q 10.
Give two examples of Bryophyta plants?
Q 11.
Give three examples of Protochordata animals.
Q 12.
Name five countries that lie in the region of megadiversity.
Q 13.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 14.
List important characteristics (at least three) of bryophytes.
Q 15.
How are pteridophytes different from the phanerogams?
Q 16.
How Angiosperms are divided further?
Q 17.
How do annelid animals differ from arthropods?
Q 18.
Name a symbiotic life form that grows on the bark of a tree as large, coloured patches.
Q 19.
Who introduced the system of scientific nomenclature of organisms?
Q 20.
Name the simplest of plants that do not have a well-differentiated body design.
Q 21.
Amar, Ujala and Anara wrote the scientic name of mango as follows. Who wrote it correctly.
Amar - Mangifera Indica
Ujala - Mangifera indica
Anara - mangifera indica
Q 22.
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 23.
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 24.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 25.
Ambibian heart is divided into how many chambers?
Q 26.
Name a reptile which has four chambered heart.
Q 27.
Give three examples of flightless birds.
Q 28.
What do you mean by biodiversity?
Q 29.
Why is there a need for classification and systematic naming of living organisms?
Q 30.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 31.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 32.
Why are Thallophytes called non-embryonic plants?
Q 33.
How Phanerogams are divided further chiefly?
Q 34.
What are naked-seeded plants are called?
Q 35.
What are four main features of phylum coelenterates?
Q 36.
Which animal phylum is commonly called as flatworms?
Q 37.
Which phylum is commonly called roundworms or pinworms?
Q 38.
What is the type of circulatory system present in Arthropods?
Q 39.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 40.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
Q 41.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 42.
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 43.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 44.
Give three examples of animals belong to Echinodermata
Q 45.
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 46.
Give three examples of Amphibians.
Q 47.
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 48.
Why do we classify organisms?
Q 49.
What are the advantages of classification?
Q 50.
Give three examples of the range of variations that you see in lifeforms around you.
