Question:
What are four main features of phylum coelenterates?
Answer:
Main features of phylum Coelenterata:
- Aquatic habitat (marine + freshwater)
- radially symmetrical
- Show more body design differentiation.
- Sac-like body cavity (coelenteron) with a single opening to the outside for ingestion and egestion.
- First of multicellular animals which possess tissue level organisation with a distinct division of labour.
- Body wall made up of two layers (diploblastic), of which outer is called ectoderm and inner is endoderm. Between these two layers found jelly like substance mesoglea.
- Surrounding the mouth tentacles are found, that helps in locomotion and to catch the prey.
- Some of the species live in colonies (corals), while others have a solitary life-span (Hydra).
Diversity in Living Organisms
Q 1.
Give examples of Arthropod animals.
Q 2.
Name a reptile which has four chambered heart.
Q 3.
Give two examples of Gymnosperms.
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.
In how many kingdoms Carolus Linnaeus diving living beings?
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 11.
Give three examples of the range of variations that you see in lifeforms around you.
Q 13.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 14.
Why are Thallophytes called non-embryonic plants?
Q 15.
On what basis plants are divided into two sub-kingdoms?
Q 16.
Give examples of Porifera or Sponges.
Q 17.
Which animal phylum is considered to be first triploblastic animals?
Q 18.
What is the most striking feature of phylum Arthropoda?
Q 19.
How is a body of Arthropods segmented?
Q 20.
What is the primary characteristic on which the first division of organisms is made?
Q 21.
Which worms cause elephantiasis. Name the group it belongs to?
Q 22.
Who wrote the book
The Origin of Species?
Q 23.
According to the five-kingdom system, which kingdom contains organisms whose structure is composed of prokaryotic cells?
Q 24.
Blue-green algae are classified with bacteria and placed in kingdom Monera.
Q 25.
Give the scientific names of tiger, peacock, ant, neem, lotus and potato.
Q 26.
Name the kingdom which includes the simplest form of eukaryotes.
Q 27.
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 28.
Give three examples of animals belong to Echinodermata
Q 30.
In the hierarchy of classification, which grouping will have the smallest number of organisms with a maximum of characteristics in common and which will have the largest number of organisms?
Q 32.
List important characteristics (at least three) of bryophytes.
Q 33.
Name the plants that are called "
First vascular land plants".
Q 34.
What are the general characteristics found in all animals?
Q 35.
In how many Phyla, the animal kingdom is divided into?
Q 36.
Differentiate between Annelida and Nematode.
Q 37.
What is the type of circulatory system present in Arthropods?
Q 38.
Give examples of the organisms that have cilia and flagellum for moving around.
Q 39.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
Q 40.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 41.
Who introduced the system of scientific nomenclature of organisms?
Q 42.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 43.
Algae belongs to which division of Plantae?
Q 44.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 45.
Name the two groups of Plantae that are commonly called phanerogams.
Q 46.
Give two examples of Pteridophyes
Q 47.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 48.
Identify the Animalia group having following features:
Q 49.
What type of circulatory system do Molluscs have?
Q 50.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
