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Class 9 Exam  >  Class 9 Tests  >  Olympiad Test: Diversity in Living Organisms- 5 - Class 9 MCQ

Olympiad Test: Diversity in Living Organisms- 5 - Class 9 MCQ


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10 Questions MCQ Test - Olympiad Test: Diversity in Living Organisms- 5

Olympiad Test: Diversity in Living Organisms- 5 for Class 9 2024 is part of Class 9 preparation. The Olympiad Test: Diversity in Living Organisms- 5 questions and answers have been prepared according to the Class 9 exam syllabus.The Olympiad Test: Diversity in Living Organisms- 5 MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Diversity in Living Organisms- 5 below.
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Olympiad Test: Diversity in Living Organisms- 5 - Question 1
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Match the column A with column B

Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 1
Euplectella aspergillum is a hexactinellid sponge in the phylum Porifera inhabiting the deep ocean. They are elegant, glassy sponges, consisting of interwoven siliceous fibers and growing in the form of a cornucopia and also known as Venus's flower basket.

Hydras belong to the phylum Coelenterata (also called Cnidaria), which includes corals, sea anemones, and jellyfish. Coelenterates are primarily marine animals, but hydras are found in freshwater ponds, lakes, and streams.

Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular, segmented bodies that can lengthen and contract.

Ascaris belongs to the phylum Nematoda. The body is cylindrical and bilaterally symmetrical. It is a parasitic worm.

Olympiad Test: Diversity in Living Organisms- 5 - Question 2
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The book “Systema Nature” was written by

Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 2
"Systema Naturae" was written by Carolus Linnaeus in 1758.
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Olympiad Test: Diversity in Living Organisms- 5 - Question 3
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What is scientific name of the National bird of India?

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The national bird of India is Peacock and its scientific name is Pavo cristatus.
Olympiad Test: Diversity in Living Organisms- 5 - Question 4
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Elephantitis is caused by
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 4
Elephantiasis also known as Filariasis, is caused because of the filarial worm, Wuchereria bancrofti.
Olympiad Test: Diversity in Living Organisms- 5 - Question 5
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Find out the false statement
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 5
Many members of class Chondrichthyes and most of the mammals are viviparous and class Osteichthyes, Reptilia and Amphibia are oviparous. Aves are oviparous. They have four-chambered heart filled with warm blood, feather-covered body, respiration by lungs and supplemented by air sacs and forelimbs modified into wings. Thus, the correct answer is option A.
Olympiad Test: Diversity in Living Organisms- 5 - Question 6
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‘Venus flower basket’ is the dried skeleton of
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 6
Venus's flower basket, any of several sponges of the genus Euplectella, especially E. aspergillum (class Hexactinellida, glass sponges). The name Venus's flower basket derives from the sponges' delicate, white, latticelike skeletons made of silica.
Olympiad Test: Diversity in Living Organisms- 5 - Question 7
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The book “origin of species” in written by
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 7
Charles Darwin's The Origin of Species, in which he writes of his theories of evolution by natural selection, is one of the most important works of scientific study ever published.
Olympiad Test: Diversity in Living Organisms- 5 - Question 8
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Birds differ from bats in absence of
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 8
Bat is a nocturnal mammal which can fly like birds. Well developed four-chambered heart and homeothermy features are common between birds and mammals. Trachea or windpipe is present in both birds and mammals. So these characters are expected in both birds and bats but a well-developed diaphragm which helps in breathing is a characteristic feature of mammals only and is not present in birds. Thus, the correct answer is option B.
Olympiad Test: Diversity in Living Organisms- 5 - Question 9
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Pteridophytes do not have
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 9
Pteridophytes comprise of a group of roughly 12,000 species of vascular plants that reproduce via spores and have neither seeds nor flowers, e.g., fern. They differ from mosses by being vascular (i.e., having water-conducting vessels). They have stems and leaves like other vascular plants.
Olympiad Test: Diversity in Living Organisms- 5 - Question 10
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Which one is the most striking (or common) character of chordates?
Detailed Solution for Olympiad Test: Diversity in Living Organisms- 5 - Question 10
In kingdom Animalia, non-chordates and chordates are classified according to the presence or absence of a notochord.

Vertebrata belongs to chordates due to their presence of a notochord, which in the adult stage is replaced by a bony or cartilaginous vertebral column.

So, the answer is 'Presence of notochord'.

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