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 4.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 5.
Why do we classify organisms?
Q 6.
What are the general characteristics found in all animals?
Q 7.
Give three examples of Molluscs
Q 8.
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 10.
How Angiosperms are divided further?
Q 11.
Give examples of Porifera or Sponges.
Q 12.
Give examples of Arthropod animals.
Q 13.
Give examples of animals that belong to Phylum Mollusca.
Q 14.
What is the primary characteristic on which the first division of organisms is made?
Q 15.
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 16.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 17.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Q 18.
Who identified the Fungi as a separate multicellular eukaryotic kingdom and introduced five kingdoms? Name the five kingdoms.
Q 19.
Blue-green algae are classified with bacteria and placed in kingdom Monera.
Q 20.
What are naked-seeded plants are called?
Q 21.
How do annelid animals differ from arthropods?
Q 22.
What is a notochord? What does it do?
Q 23.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 24.
Which in your opinion is more basic characteristic for classifying organism. The place where they live in or the kind of cells they are made of?
Q 25.
In the hierarchy of classification, which group will have the smallest number of organisms and a maximum number of similar characteristics?
Q 26.
Give two examples of Bryophyta plants?
Q 27.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 28.
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 29.
Give three examples of Protochordata animals.
Q 30.
Ambibian heart is divided into how many chambers?
Q 31.
Give three examples of flightless birds.
Q 32.
Give three examples of the range of variations that you see in lifeforms around you.
Q 33.
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 34.
On what bases are plants and animals put into different categories?
Q 35.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 36.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 37.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 38.
In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?
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.
Name the organisms which are outside the classification.
Q 41.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 42.
Name the plants that are called "
First vascular land plants".
Q 43.
Give two examples of Gymnosperms.
Q 44.
How do gymnosperms and angiosperms differ from each other?
Q 45.
In how many Phyla, the animal kingdom is divided into?
Q 46.
Write two important characteristics of sponges ?
Q 47.
Do sponges have a nervous system?
Q 48.
Which animal phylum is considered to be first triploblastic animals?
Q 49.
Write important features about Phylum Platyhelminthes.
Q 50.
How do poriferan animals differ from coelenterate animals?
