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.
On what bases are plants and animals put into different categories?
Q 2.
Give examples of Arthropod animals.
Q 3.
Name the kingdom which includes the simplest form of eukaryotes.
Q 4.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 5.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 6.
Name five countries that lie in the region of megadiversity.
Q 7.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 8.
Name a reptile which has four chambered heart.
Q 9.
(a) What are saprophytes?
(b) Name the kingdom to which they belong.
(c) What is the cell wall of fungi made up of?
Q 10.
Why are Thallophytes called non-embryonic plants?
Q 11.
How are pteridophytes different from the phanerogams?
Q 12.
Name a parasitic disease caused by members of Nematoda.
Q 13.
Who introduced the system of scientific nomenclature of organisms?
Q 14.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 15.
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 16.
Filarial worms, (Ascaris)round worms, (Wuchereria)pin worms belong to which group of animalia?
Q 17.
Give three examples of Protochordata animals.
Q 18.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 19.
Give three examples of flightless birds.
Q 20.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 21.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 22.
Give two examples of Gymnosperms.
Q 23.
How Angiosperms are divided further?
Q 24.
How is locomotion brought in animals belonging to Mollusca phylum?
Q 25.
Name the simplest of plants that do not have a well-differentiated body design.
Q 26.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 27.
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 28.
Give two examples of Bryophyta plants?
Q 29.
Give three examples of Molluscs
Q 30.
Give three examples of animals belong to Echinodermata
Q 31.
Ambibian heart is divided into how many chambers?
Q 32.
Give three examples of Amphibians.
Q 33.
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 35.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
Q 36.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 37.
List important characteristics (at least three) of bryophytes.
Q 38.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 39.
Write two important characteristics of sponges ?
Q 40.
What are four main features of phylum coelenterates?
Q 41.
Which animal phylum is commonly called as flatworms?
Q 42.
What is the most striking feature of phylum Arthropoda?
Q 43.
How is a body of Arthropods segmented?
Q 44.
How do annelid animals differ from arthropods?
Q 45.
Name the phylum to which Start fish and Sea urchin belong to?
Q 46.
What is a notochord? What does it do?
Q 47.
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 48.
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 49.
What type of circulatory system do Molluscs have?
Q 50.
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.