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.
Name a reptile which has four chambered heart.
Q 3.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 4.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 5.
What are the advantages of classification?
Q 6.
Give two examples of Gymnosperms.
Q 7.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 8.
Give examples of bryophytes.
Q 9.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 10.
Give three examples of Molluscs
Q 12.
Why are Thallophytes called non-embryonic plants?
Q 13.
Give examples of Porifera or Sponges.
Q 14.
Which animal phylum is considered to be first triploblastic animals?
Q 15.
How is a body of Arthropods segmented?
Q 16.
What is the primary characteristic on which the first division of organisms is made?
Q 17.
Which worms cause elephantiasis. Name the group it belongs to?
Q 18.
Give three examples of the range of variations that you see in lifeforms around you.
Q 19.
Who wrote the book
The Origin of Species?
Q 20.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 21.
On what basis plants are divided into two sub-kingdoms?
Q 22.
What is the most striking feature of phylum Arthropoda?
Q 23.
Give the scientific names of tiger, peacock, ant, neem, lotus and potato.
Q 24.
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 25.
Give three examples of animals belong to Echinodermata
Q 27.
What are the general characteristics found in all animals?
Q 28.
What is the type of circulatory system present in Arthropods?
Q 29.
Name the kingdom which includes the simplest form of eukaryotes.
Q 30.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 31.
Give two examples of Pteridophyes
Q 32.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 33.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 34.
What is the main basis of differentiation between vertebrates and non-vertebrates?
Q 35.
What changes are evolved in limbs of aves?
Q 37.
Who is known as the father of taxonomy?
Q 38.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 39.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 40.
Blue-green algae are classified with bacteria and placed in kingdom Monera.
Q 41.
List important characteristics (at least three) of bryophytes.
Q 42.
How are pteridophytes different from the phanerogams?
Q 43.
How do gymnosperms and angiosperms differ from each other?
Q 44.
In how many Phyla, the animal kingdom is divided into?
Q 45.
How do poriferan animals differ from coelenterate animals?
Q 46.
Which phylum is commonly called roundworms or pinworms?
Q 47.
Name the largest group (phylum) of animals.
Q 48.
Name the phylum to which Start fish and Sea urchin belong to?
Q 49.
Give examples of organisms which belong to Phylum Protochordata.
Q 50.
List three important characteristics of Phylum Protochordata.
