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.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 2.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 3.
What are naked-seeded plants are called?
Q 5.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 6.
How do annelid animals differ from arthropods?
Q 7.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 8.
Give an example of marsupial mammal
Q 9.
Why do we classify organisms?
Q 10.
In which kingdom you will place an organism which is multicellular, eukaryotic, non-green heterotroph or saprophytic, lacks chlorophyll and has an absorptive mode of nutrition?
Q 11.
Give examples of Porifera or Sponges.
Q 12.
Give examples of Arthropod animals.
Q 13.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 14.
Which worms cause elephantiasis. Name the group it belongs to?
Q 15.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 16.
What changes are evolved in limbs of aves?
Q 17.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 18.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 19.
Give examples of Thallophyta plants.
Q 20.
Why are Thallophytes called non-embryonic plants?
Q 21.
Define Cryptograms.
Q 22.
In how many Phyla, the animal kingdom is divided into?
Q 23.
Leeches and Earthworms belong to which phylum?
Q 24.
Name the largest group (phylum) of animals.
Q 25.
What is the most striking feature of phylum Arthropoda?
Q 26.
Name the phylum to which this organism belongs. Write any two characteristic feature of the phylum.
Q 27.
Give examples of organisms which belong to Phylum Protochordata.
Q 28.
What is the primary characteristic on which the first division of organisms is made?
Q 29.
What is the mode of nutrition in Mushroom?
Q 30.
Do Protozoans have eyes?
Q 31.
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 32.
Give three examples of organisms that are arthopods.
Q 33.
Ambibian heart is divided into how many chambers?
Q 34.
Why is there a need for classification and systematic naming of living organisms?
Q 35.
Give three examples of the range of variations that you see in lifeforms around you.
Q 36.
Which do you think is a more basic characteristic for classifying organisms?(a) the place where they live.(b) the kind of cells they are made of. Why?
Q 37.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 38.
What are four main features of phylum coelenterates?
Q 39.
How do poriferan animals differ from coelenterate animals?
Q 40.
Which phylum is commonly called roundworms or pinworms?
Q 41.
Give examples of animals belong to Nematoda.
Q 42.
Name the first animals (phylum) that have a true body cavity.
Q 43.
What is the type of circulatory system present in Arthropods?
Q 44.
Give examples of animals that belong to Phylum Mollusca.
Q 45.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 46.
What is a notochord? What does it do?
Q 47.
Why are Bats and whales classified as mammals?
Q 48.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 49.
Give examples of the organisms that have cilia and flagellum for moving around.
Q 50.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
