Worksheet solutions for chapter: Diversity in Living Organisms for class 9 are provided below.
(1) What is the classification given by Aristotle?
Ans- Greek thinker Aristotle classified animals on the basis of their habitat, ie, water, land or air.
(2) Write characteristics of fungi?
Ans- The characteristics of fungi are given below –
(a)These are Eukaryotic organisms.
(b) The mode of nutrition of these organisms is heterotrophic. Some of them use decaying organic material as food and are therefore called saprotrophs.
(c) Some organisms are parasites. They require living protoplasm of a host organism for food.
(d) Many of them can become multicellular organisms at certain stages in their lives.
(e) They have cell walls made of a tough complex sugar called chitin.
(f) Eg:- Yeasts, molds and mushrooms
(g) Some fungal species live in permanent mutually dependent relationships with blue green algae which is called symbiotic relationship. These symbiotic life forms are called lichens.
(3) Write differences of thyllophyta and bryophyta.
Ans – Differences between thallophyta and bryophyta are tabulated below-
|1.||Plants that do not have well – differentiated body design fall in this group.||The plant body is differentiated to form stem and leaf like structures.|
|2.||These plants are predominantly aquatic.||These are called the amphibians of the plants kingdom.|
|3.||Eg:- Spirogyra, Ulothrix, Cladophora, Ulva and Chara.||Eg:- Moss (Funaria) and Marchantia.|
(4) What are the differences between platyhelminthes and nematoda.
Ans – Differences between platyhelminthes and nematoda are tabulated below-
|1.||They have flat bodies.||They have cylindrical body.|
|2.||There is no internal body cavity or coelom.||These animals have a body cavity or a pseudocoelom.|
|3.||The body of organisms of this group is very complexly designed.||There are tissues but no real organs.|
|4.||Eg:- Liverflukes etc.||Eg:- Ascaris and Wuchereri|
(5) Write name of classification of vertebrata?
Ans – The name of classification of vertebrata are given below –
(6) Write differences between pisces and amphibians.
Ans – Differences between pisces and amphibians are tabulated below –
|1.||Live only in water.||Can live in water and on land.|
|2.||They have scales .||They do not have scales.|
|3.||They do not have mucus glands in the skin.||They have mucus glands in the skin.|
|4.||They have two chambere I herat.||They have three chambered heart.|
|5.||Eg:- Shark, electric ray etc.||Eg:- Salamander, toad, rana tigrina etc.|
(7) Write `True’ against given sentence, if sentence is right. Write `False’ against given sentence, if sentence is wrong.
(i) Mammals are warm – blooded animal.
(ii) Prokaryotes are multicellular.
(iii) Gymnosperms have covered seeds.
(iv) Bryophyta is called as the amphibian of the plant kingdom.
(i) Mammals are warm – blooded animal. `True’
(ii) Prokaryotes are multicellular. `True’
(iii) Gymnosperms have covered seeds. `False’
(iv) Bryophyta is called as the amphibian of the plant kingdom. `True’
(8) Why bryophyta is called amphibians of plantae.
Ans – Bryophyta is called amphibians of plantae because they grow in soil but need water for sexual reproduction.
(9) Write name of kingdom and groups of given organisms.
(i) Electric ray
(vi) Earth worm
(i) Electric ray – Vertebreata (Pisecs)
(ii)Whale – Vertebrata (Mammalia)
(iii) Amoeba – Protista
(iv) Chameleon – Verteberata (Raptilia)
(v) Human – Vertebrata (Mammalia)
(vi) Earth worm – Annelida
(vii) Scorpion – Arthropoda
(viii) Octopus – Mollusca
(ix) Fern – Pteridophyta
(x)Tape worm – Platyhelminthes
(10) Write differences between monocot and dicot.
Ans – Differences between the monocot and dicot are tabulated below –
|1.||Plants with seeds having a single cotyledon.||Plants with seeds having two cotyledons.|
|2.||Eg:- Onion, banana etc.||Eg:- Rose etc.|