CBSE Class 9 Biology Diversity In Living Organisms Worksheet Set B

Read and download free pdf of CBSE Class 9 Biology Diversity In Living Organisms Worksheet Set B. 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 (2)

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

Question. Name the 2 methods of protistan’s reproduction.
Ans : (1) Asexual reproduction (cell fusion),
(2) Sexual reproduction (zygote formation).

Question. What are prokaryotes? Give one example for prokaryote.
Ans : The organisms which do not have well organized nucleus in their cell are called prokaryotes. Organisms containing incipient nucleus (Nucleoid) in their cells are called prokaryotes. Example : Bacteria, Nostoc (cyano bacteria/ B.G. Algae)

Question. Give one example for ciliated protozoans.
Ans : Paramecium.

Question. Which one is called malarial parasite?
Ans : Plasmodium.

Question. Name the disease caused by plasmodium.
Ans : Malaria.

Question. Which fungi act as a source of antibiotics?
Ans : Penicillium.

Question. What are saprophytic fungi?
Ans : The heterotrophic fungi which absorb soluble organic matter from dead substrates are called saprophytes.

Question. How are pores or holes all over the body of Porifera important?
Ans : The pores present all over the body of the organisms lead to a canal system that helps in circulating water throughout the body to bring in food and oxygen.

Question. If you are provided seeds of gram, wheat, rice, pumpkin, maize and pea. Classify these as Monocots/ Dicots.
Ans : Monocots : Wheat, Rice, Maize. Dicots : Gram, Pumpkin, Pea.

Question. What are hermaphrodites? Give two examples.
Ans : Hermaphrodites are the organisms that have both the sexes. Thus, it can produce both sperms and eggs and called hermaphrodites. Example : Sponges, earthworms.

Question. Give general characteristics of Porifera.
Ans :
(a) Animals with pores all over the body.
(b) Body is not well differentiated.
(c) Non-motile animals remain attached to solid support.
(d) Body is covered with hard outer skeleton. Example : Sponges.

Question. Give the characteristics of Arthropoda with 2 examples.
Ans :
(a) Arthropoda means jointed legs.
(b) Animals are bilaterally symmetrical and segmented.
(c) It has an open circulatory system.
(d) This is the largest group of animals.
Examples : Spider, scorpions, crabs, house flies.

Question. Give the characteristics of Ayes.
Ans : (a) Aves/birds can fly.
(b) Streamlined body.
(c) Hollow and light bones.
(d) Forelimbs are modified into wings.
(e) Warm-blooded animals, heart with four chambers.
(f) Egg laying animals.
(g) Beak present, teeth are absent.

Question. Write briefly about lichens.
Ans :
(1) Lichens are symbiotic close association of two different organisms such as algae and fungi.
(2) Algal component of lichen known as phycobiont which is photosynthetic in nature.
(3) Fungal component of living form is known as mycobiont which is non-photosynthetic, but helps in absorption of minerals, nutrients and water.
(4) Lichens are very good pollution indicator as they do not grow in polluted areas.
Question. Define species.
Ans : Species are organisms within genus with slight difference from other and capable of breeding and perpetuate.

Question. What is symbiotic relationship?
Ans : It is a relationship between two organisms in which both of them are benefitted, e.g., fungi gets food from blue-green algae and in return blue-green gets shelter (lichens).

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