Students can Download Science Chapter 7 Diversity in Living Organisms Questions and Answers, Notes Pdf, KSEEB Solutions for Class 9 Science helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.
Karnataka State Syllabus Class 9 Science Chapter 7 Diversity in Living Organisms
KSEEB Class 9 Science Diversity in Living Organisms Intext Questions and Answers
Question 1.
Why do we classify organisms?
Answer :
Exploring the diversity of life forms and Iearii their characteristics in a better manner.
Question 2.
Give three examples to study a variety of variations that you sec in life forms around you?
Answer :
(i) Microscopic bacteria
(ii) Blue whale (macroscopic)
(iii) Redwood trees in California. Groups based on existence, evolution and habitat forms.
Ex : Grass and Banyan tree
Question 3.
Which do you think is a more basic characteristic for classifying organ is ni s?
Answer :
(a) The place where they live habitat
(b) The kind of cells they are made of why?
Determine its nature, microscopic or macroscopic, prokaryotic or eukaryotic cells.
Question 4.
What is the primary characteristic on which the first division of organisms is made?
Answer :
(a) Cells its origin and number.
(b) Habitat
Question 5.
On what basis arc plants and animals put into (different categories?
Answer :
(i) Eukaryotic cell
(ii) Do the cells occur singly or they grouped.
(iii) Do organisms produce their own food?
(iv) Perform the functions.
Question 6.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Answer :
(i) The first group and frequently referred to as primitive.
(ii) Do not properly relate to the differences since they are young.
Question 7.
Will advanced organisms he the same as complex organisms? Why?
Answer :
(i) They are young
(ii) They are unique and do not property differences.
Question 8.
What is the criterion for the classification of organisms as belonging to the kingdom monera or Protista?
Answer :
Monera or Protista are formed on the basis of their cell structure, mode and source of nutrition and body organisation.
Question 9.
In which kingdom will you place an organism which is single called eukaryotic and prokaryotic?
Answer :
Protista
Question 10.
In the hierarchy of classification wheels grouping will have the smallest number of organisms with a maximum characteristic of common and which will have the largest number of organisms?
Answer :
Eukaryotic cells
Question 11.
Which division among plants has the simplest organism?
Answer :
Thallophyta
Question 12.
How are pteridophytes different from the phonograms?
Answer :
Pteridophytes have naked embroys that are called spores. But phanerogams have reproductive tissues that ultimately make seeds. Seeds are the result of the reproductive process.
Question 13.
How do gymnosperms and angiosperms differ from each other?
Answer :
Gymnosperms have seeds which are naked and they are perennial, evergreen and woody. But in Angiosperms, the seeds develop inside an organ which is modified to become a fruit.
Question 14.
How do porifera animals differ from coelenterate animals?
Answer :
Porifera have holes or pores all over the body. These animals are covered with a hard outside layer or skeleton. In this way poriferean animals differ from coelenterale animals.
Question 15.
How do annelid animals differ from Arthropoda?
Answer :
Annelid animals have a true body cavity. There is thus extensive organ differentiation. This differentiation occurs in a segmental fashion, with the segments lined up on after the other from head to tail. These are bilaterally symmetrical and triploblastic. In this way annelid animals differ from arthropods.
Question 16.
What are the differences between amphibians and reptiles?
Answer :
Amphibians are found both in water and on land. They have mucus glands in the skin. Respiration is through either gills or lungs. In this way amphibians and reptiles differ.
Question 17.
What are the differences between animals belonging to the Aves group and 1 those in the mammal group?
Answer :
Birds lay eggs. They have feathers that covered the body and two forelimbs are modified for flight. But mammals have mammary glands for the production of milk to nourish their young. The skin has hairs as well as sweat and oil glands. Most mammals familiar to us produce live young ones. However, a few of them, like the platypus and the echidna lay eggs. Thus there is a difference between Aves and mamalia.
KSEEB Class 9 Science Diversity in Living Organisms Textbook Exercise Questions and Answers
Question 1.
What are the advantages of classifying organisms?
Answer :
Origin, nature, species, nature can be determined.
Question 2.
How would you choose between two characteristics to be used for developing a hierarchy in classification?
Answer :
Species, Genes, family, order, class, phylum.
Question 3.
Explain the basis for grouping organisms into five kingdoms.
Answer :
Similarly, species, phylum distinguishes characteristics.
Question 4.
What are the major divisions in the Plantae? What is the basis for these divisions?
Answer :
Origion, vascular, nonvascular plants.
Question 5.
How are- the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Answer :
Cell organelles, modifications, similarity.
Question 6.
Explain how animals in Vertebrata are classified into further subgroups.
Answer :
Based on- place, organ, modification, and structural variations, adaptations. Reproductive methods and they are classified as Pisces, amphibians, reptiles, aves, and mammals.
KSEEB Class 9 Science Diversity in Living Organisms Additional Questions and Answers
Question 1.
Mention the characteristics of Echinodermata.
Answer :
- they have hedgehog and skin
- spiny skinned organelles
- triploblastic organelles
- have coelomic cavity
- have hard calcium carbonate
Question 2.
Name the amphibians of the plant kingdom.
Answer :
Bryophytes
Question 3.
Write the characteristics of Pteridophyta.
Answer :
- Differentiated into roots, stem and leave.
- have naked embryos that are called
- Do not have cell wall spores
- Nutrition by autotrophic
- crypto game
Question 4.
Write the characteristics of Monera.
Answer :
- Do not have a defined nucleus or
- Multicellular body
Question 5.
Write the characteristics of Protista
Answer :
- Unicellular
- Eukaryotic organelles.
- Hair-like cilia or whip-like momentary organelles (flagella)