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Class 9 Exam  >  Class 9 Tests  >  Test: Nonchordates Coelomates - Class 9 MCQ

Test: Nonchordates Coelomates - Class 9 MCQ


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10 Questions MCQ Test - Test: Nonchordates Coelomates

Test: Nonchordates Coelomates for Class 9 2024 is part of Class 9 preparation. The Test: Nonchordates Coelomates questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Nonchordates Coelomates MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Nonchordates Coelomates below.
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Test: Nonchordates Coelomates - Question 1
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Which of the following character can be seen in housefly, spider, butterfly and cockroach?

Detailed Solution for Test: Nonchordates Coelomates - Question 1

Jointed appendages is a common feature of Phylum Arthropoda, and the mentioned animals belong to the phylum Arthropoda.

Test: Nonchordates Coelomates - Question 2
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Which of the following organism shows the presence of jointed appendages?

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Test: Nonchordates Coelomates - Question 3
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Skin is kept moist in earthworms. It helps in

Detailed Solution for Test: Nonchordates Coelomates - Question 3

Skin in earthworms is kept moist because of the process of respiration. Respiration in earthworms can happen only by means of diffusion which transfers molecules from areas of higher concentration to areas of low concentration.

Test: Nonchordates Coelomates - Question 4
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Which of the following is a member of Phylum Echinodermata?
Test: Nonchordates Coelomates - Question 5
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Who proposed artificial system of classification
Test: Nonchordates Coelomates - Question 6
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Which phylum has a reduced coelomic cavity?
Detailed Solution for Test: Nonchordates Coelomates - Question 6
A coelom is a hollow, fluid-filled cavity found in many living things, where it acts as a protective cushion for their internal organs. In some animals, such as worms, the coelom acts as a skeleton. The coelom also allows the internal organs to move and grow independently of the outer layer of the body wall.
Now we see what is phylum...in simple words we can define it that a phylum is a level of classification or taxonomic rank below Kingdom and above Class. There are 36 recognized animal phyla, of which but nine contain the vast majority of described, extant species.and Mollusca is one of them.
If we focus on the some basic features of Mollusca...then.
Some common features are :
▪Unsegmented soft body with bilateral symmetry.
▪Presence of an internal or external shell.
▪A toothed tongue (made mostly of chitin) called the radula.
▪A mantle which is a fold in the body wall that lines the shell.
▪Muscular foot (and/or tentacles in some).
●Here we see it has presence of external and internal shell....which leads to reduce the coelomic cavity..
Test: Nonchordates Coelomates - Question 7
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Mosquito belongs to the phylum
Detailed Solution for Test: Nonchordates Coelomates - Question 7

Mosquitos are triploblastic, segmented and have jointed appendages and thus belong to Phylum Arthropoda.

Test: Nonchordates Coelomates - Question 8
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Pick the odd one out:
Test: Nonchordates Coelomates - Question 9
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What does Mollusca mean?
Test: Nonchordates Coelomates - Question 10
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Which of the following animal does not belong to phylum Echinodermata?
Detailed Solution for Test: Nonchordates Coelomates - Question 10

Chiton belongs to the phylum mollusca.
So, Chiton cannot belong to the phylum Echinodermata.

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