Question:
Write important features about Phylum Platyhelminthes.
Answer:
- Mostly parasitic
- First simplest triploblastic animals i.e. having three layers of body cells.
- Bilaterally symmetrical
- No true internal body cavity or coelom
- Body is dorsoventrally flattened
- Examples: Planaria, Liverfluke, Tapeworm
Diversity in Living Organisms
Q 1.
Give examples of Arthropod animals.
Q 2.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 3.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 4.
Name a reptile which has four chambered heart.
Q 5.
Give two examples of Gymnosperms.
Q 6.
How is a body of Arthropods segmented?
Q 7.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 8.
Give examples of bryophytes.
Q 9.
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 10.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 11.
What are the advantages of classification?
Q 12.
On what bases are plants and animals put into different categories?
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.
Name the largest group (phylum) of animals.
Q 17.
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 18.
What is the primary characteristic on which the first division of organisms is made?
Q 19.
Name the kingdom which includes the simplest form of eukaryotes.
Q 20.
Woese introduced by dividing the Monera kingdom into two sub-kingdoms. Name the two?
Q 21.
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 22.
Name the three divisions of Plantae that have inconspicuous reproductive organs. What are their seeds called?
Q 23.
Name the levels of classification proposed by Linnaeus. What happens to similarities among organisms as we go from top to bottom level?
Q 24.
What is Symbiotic? Give an example of organisms which exhibit this relationship.
Q 25.
How do gymnosperms and angiosperms differ from each other?
Q 26.
Which animal phylum is considered to be first triploblastic animals?
Q 27.
Name the phylum to which Start fish and Sea urchin belong to?
Q 28.
Name the phylum to which this organism belongs. Write any two characteristic feature of the phylum.
Q 29.
In which kingdom would you place an organism which is unicellular, eukaryotic and photosynthetic?
Q 30.
Give two examples of Bryophyta plants?
Q 31.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 32.
No scales on skin, mucus glands on skin, three chambered heart, respiration through gills, lungs and skin, oviparous, live on land and in water. Name the group of these vertebrates.
Q 33.
Snakes, turtles, lizards and crocodiles belong to which category of vertebrates?
Q 34.
Give three examples of the range of variations that you see in lifeforms around you.
Q 35.
In which kingdom, you will place an organism which is multicellular, eukaryotic, heterotroph, lacks chlorophyll and has an ingestive mode of nutrition.
Q 36.
How do the saprophytes get their food? Give two examples of a saprophyte.
Q 37.
Why bryophytes are called the amphibians of the plant kingdom?
Q 38.
How are pteridophytes different from the phanerogams?
Q 39.
How Phanerogams are divided further chiefly?
Q 40.
Write two important characteristics of sponges ?
Q 41.
Write important features about Phylum Platyhelminthes.
Q 42.
Name a parasitic disease caused by members of Nematoda.
Q 43.
Differentiate between Annelida and Nematode.
Q 44.
What is the most striking feature of phylum Arthropoda?
Q 45.
Give examples of organisms which belong to Phylum Protochordata.
Q 46.
In the hierarchy of classification, which group will have the largest number of organisms?
Q 47.
Who introduced the system of scientific nomenclature of organisms?
Q 48.
Do Protozoans have eyes?
Q 49.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 50.
Name the two groups of Plantae that are commonly called phanerogams.
