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.
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 4.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 6.
Why do we classify organisms?
Q 7.
Give examples of Arthropod animals.
Q 8.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 9.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 10.
What changes are evolved in limbs of aves?
Q 11.
Give an example of marsupial mammal
Q 12.
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 13.
Define Cryptograms.
Q 14.
Give examples of Porifera or Sponges.
Q 15.
Name the largest group (phylum) of animals.
Q 16.
What is the most striking feature of phylum Arthropoda?
Q 17.
How do annelid animals differ from arthropods?
Q 18.
Name the phylum to which this organism belongs. Write any two characteristic feature of the phylum.
Q 19.
What is the primary characteristic on which the first division of organisms is made?
Q 20.
Give three examples of organisms that are arthopods.
Q 21.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 22.
Why is there a need for classification and systematic naming of living organisms?
Q 23.
Give three examples of the range of variations that you see in lifeforms around you.
Q 24.
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 25.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 26.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 27.
Give examples of Thallophyta plants.
Q 28.
In how many Phyla, the animal kingdom is divided into?
Q 29.
Leeches and Earthworms belong to which phylum?
Q 30.
Give examples of organisms which belong to Phylum Protochordata.
Q 31.
Why are Bats and whales classified as mammals?
Q 32.
Give examples of the organisms that have cilia and flagellum for moving around.
Q 33.
What is the mode of nutrition in Mushroom?
Q 34.
Do Protozoans have eyes?
Q 35.
Name the simplest of plants that do not have a well-differentiated body design.
Q 36.
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 37.
Which worms cause elephantiasis. Name the group it belongs to?
Q 38.
Give three examples of Molluscs
Q 40.
Based on evolution, primarily how organisms are categorised?
Q 41.
Name the scientist who created the third kingdom for all microscopic unicellular organisms. What did he call it?
Q 42.
According to the five-kingdom system, which kingdom contains organisms whose structure is composed of prokaryotic cells?
Q 43.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 44.
Why are Thallophytes called non-embryonic plants?
Q 45.
Give examples of bryophytes.
Q 46.
Give two examples of Gymnosperms.
Q 47.
How do gymnosperms and angiosperms differ from each other?
Q 48.
How Angiosperms are divided further?
Q 49.
What are four main features of phylum coelenterates?
Q 50.
Which animal phylum is considered to be first triploblastic animals?
