Question:
Write two important characteristics of sponges ?
Answer:
Important characteristics of sponges are:
- simplest multi-cellular animals.
- most of them are marine except spongilla which is fresh water.
- non-motile and attached to support
- organisms with holes or ‘pores’, all over the body with canal systems.
- canal system of the body helps in circulating water throughout the body to bring in food andoxygen.
- animals are covered with a hard outside layer or skeleton.
- body design involves very minimal differentiation and division into tissues.
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.
(a) What are saprophytes?
(b) Name the kingdom to which they belong.
(c) What is the cell wall of fungi made up of?
Q 6.
Name the kingdom which includes the simplest form of eukaryotes.
Q 7.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 8.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 9.
Name five countries that lie in the region of megadiversity.
Q 10.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 11.
How Angiosperms are divided further?
Q 12.
Name a parasitic disease caused by members of Nematoda.
Q 13.
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 14.
Give two examples of Bryophyta plants?
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.
Ambibian heart is divided into how many chambers?
Q 19.
Name a reptile which has four chambered heart.
Q 20.
Give three examples of flightless birds.
Q 21.
Why are Thallophytes called non-embryonic plants?
Q 22.
List important characteristics (at least three) of bryophytes.
Q 23.
How are pteridophytes different from the phanerogams?
Q 24.
Which animal phylum is commonly called as flatworms?
Q 25.
Which phylum is commonly called roundworms or pinworms?
Q 26.
What is the most striking feature of phylum Arthropoda?
Q 27.
How do annelid animals differ from arthropods?
Q 28.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 29.
Name the phylum to which Start fish and Sea urchin belong to?
Q 30.
What is a notochord? What does it do?
Q 31.
Name a symbiotic life form that grows on the bark of a tree as large, coloured patches.
Q 32.
Who introduced the system of scientific nomenclature of organisms?
Q 33.
Name the simplest of plants that do not have a well-differentiated body design.
Q 34.
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 35.
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 36.
Hydra, Jelly Fish, corals belog to which group of animals?
Q 37.
Give three examples of animals belong to Echinodermata
Q 38.
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 39.
Give three examples of Amphibians.
Q 40.
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 41.
What do you mean by biodiversity?
Q 42.
Why do we classify organisms?
Q 43.
Why is there a need for classification and systematic naming of living organisms?
Q 44.
Give three examples of the range of variations that you see in lifeforms around you.
Q 46.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 47.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 48.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 49.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 50.
Explain the basis for grouping organisms into five kingdoms.
