CBSE Class 9 Biology Diversity In Living Organisms Worksheet Set A

Read and download free pdf of CBSE Class 9 Biology Diversity In Living Organisms Worksheet Set A. Students and teachers of Class 9 Biology can get free printable Worksheets for Class 9 Biology in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 9 students should practice questions and answers given here for Biology in Grade 9 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 9 Biology Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests

Diversity In Living Organisms Class 9 Biology Worksheet Pdf

Class 9 Biology students should refer to the following printable worksheet in Pdf for Diversity In Living Organisms in standard 9. This test paper with questions and answers for Grade 9 Biology will be very useful for exams and help you to score good marks

Class 9 Biology Worksheet for Diversity In Living Organisms


CBSE Class 9 Biology Worksheet - Diversity in Living Organisms

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  Exam Questions NCERT Class 9 Science Chapter 7 Diversity In Living Organisms

Question. What are autotrophic bacteria? Give an example for autotrophic bacteria.
Ans : The bacteria which synthesize their own food from inorganic substances are called autotrophic bacteria.
Example : Nostoc, Anabaena.

Question. What are heterocysts?
Ans : The colourless specialized cells of nostoc filament meant for fixing atmospheric nitrogen are called heterocysts.

Question. What are chemosynthetic autotrophic bacteria?
Ans : The bacteria which oxidize inorganic substances like nitrate, nitrities and ammonia to release energy in the form of ATP are called chemosynthetic bacteria.

Question. What are mycoplasmas?
Ans : The smallest living organisms without cell walls and survive without oxygen are called mycoplasmas.

Question. What are planktons?
Ans : The microscopic organisms which floats on water are called planktons.

Question. Name the chemical component of cell wall of Diatoms.
Ans : Chitin.

Question. What are euglenoids?
Ans : The fresh water organisms found in stagnant water with protein rich particle in their cell wall are called euglenoids.

Question. What are plasmodium?
Ans : Aggregation of slime moulds under suitable conditions are called plasmodium, which may grow and spread over several feet. During unfavorable conditions they differentiate and follows fruiting bodies.

Question. Name parasitic protozoa.
Ans : Entamoeba, Plasmodium (Malarial parasite).

Question. Name the disease caused by Trypanosoma.
Ans : Sleeping sickness.

Question. What are the characteristic features of mammals?
Ans : Characteristic features of mammals :
(a) Body is covered with hair.
(b) Skin is provided with sweat and sebaceous glands.
(c) Heart is four-chambered.
(d) Fertilization is internal.
(e) Females have mammary glands to produce milk to nourish their young ones.
(f) External ear–pinna present.
(g) Eyes have eye lids.
(h) Warm-blooded.
(i) Respiration through lungs.

Question. What is the importance of heterotrophic bacteria?
Ans :
(1) Conversion of milk to curd.
(2) Antibiotic productions.
(3) N2 fixation in leguminous roots.
(4) Act as pathogen, causing diseases like cholera, typhoid, tetanus.
(5) Damage corps (citrus canker disease)
(6) Act as ‘Scavengers of nature’ by decomposing dead and decaying organic matter.

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