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.
Name a reptile which has four chambered heart.
Q 2.
Give examples of Arthropod animals.
Q 3.
Cold blooded, two chamber heart, stream lined body, scales on skin, gills present, aquatic life. Which group of vertebrates are we referring to?
Q 4.
In how many kingdoms Carolus Linnaeus diving living beings?
Q 5.
What are the major divisions in the Plantae? What is the basis for these divisions?
Q 6.
Give two examples of Gymnosperms.
Q 7.
Give two examples of Pteridophyes
Q 8.
What are the advantages of classification?
Q 10.
Give examples of bryophytes.
Q 11.
In how many Phyla, the animal kingdom is divided into?
Q 12.
What kind of circulatory system is found in animals from Mollusca phylum?
Q 13.
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 14.
Sunflower, Maize, Wheat and Pea belong to which group of plants?
Q 15.
Commonly called flatworm, bilateral symmetrical, acoelomates are the features of which animal division?
Q 16.
How are pteridophytes different from the phanerogams?
Q 17.
What are naked-seeded plants are called?
Q 18.
Name the phylum to which the following are included. (i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
Q 19.
Give examples of Porifera or Sponges.
Q 20.
Animals belong to phylum Coelenterata are diploblastic. What do you mean by the term diploblastic?
Q 21.
Which animal phylum is commonly called as flatworms?
Q 22.
Which phylum is commonly called roundworms or pinworms?
Q 23.
How is a body of Arthropods segmented?
Q 24.
Name the phylum to which Start fish and Sea urchin belong to?
Q 25.
Why are Bats and whales classified as mammals?
Q 26.
Which division of plants are often called amphibians of the plant kingdom?
Q 27.
Give three examples of Molluscs
Q 28.
Spiny skin, marine, triploblastic coelomates having water-driven tube system for locomotion. What type of group are we talking of?
Q 29.
Ambibian heart is divided into how many chambers?
Q 30.
What do you mean by biodiversity?
Q 31.
Give three examples of the range of variations that you see in lifeforms around you.
Q 32.
What is the primary characteristic on which the first division of organisms is made?
Q 33.
On what bases are plants and animals put into different categories?
Q 34.
Name the book written by Carolus Linnaeus on the classification of organisms.
Q 35.
What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?
Q 36.
Name the organisms which are outside the classification.
Q 37.
What is Symbiotic? Give an example of organisms which exhibit this relationship.
Q 38.
On what basis plants are divided into two sub-kingdoms?
Q 39.
Name the largest group (phylum) of animals.
Q 40.
What is the most striking feature of phylum Arthropoda?
Q 41.
Do Protozoans have eyes?
Q 42.
Write the name of the group of plants, which produces seeds, but not fruits.
Q 43.
Name the two groups of Plantae that are commonly called phanerogams.
Q 44.
Give two examples of Bryophyta plants?
Q 45.
Identify which of the following are monocots and dicots : garlic, onion, tomatoes, corn, peppers, potatoes, wheat, beans
Q 46.
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 47.
Name the fish having skeleton made of both bone and cartilage.
Q 48.
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 49.
What changes are evolved in limbs of aves?
Q 50.
Four Chambered heart, mostly viviparous, skin covered with hairs, skin contains sweat and oil glands, four chambered heart. Which category of vertebrates are we talking about?
