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Terminology and Summary of Criteria for Classification

Which one of ...

Question

Which one of the following combinations is correct?

A

Oligochaeta and Arthropoda - Phyla

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B

Porifera and Annelida - Phyla

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C

Mollusca and Hydrozoa - Classes

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D

Aves and Chordata - Classes

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Solution

The correct option is B Porifera and Annelida - Phyla
Oligochaeta is a subclass of phylum Annelida, while Arthropoda is a phylum.
Hydrozoa is a class but Mollusca is a phylum.
Aves is a class of Chordata phylum.
Porifera and Annelida both are phyla of animal kingdom. Thus, the correct answer is option B.

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Q. Assertion :Heteronomous segmentation, i.e., the division of labor resulting in dissimilarity of the metamers of the different regions of the body, is found in the phyla Annelida, Arthropoda and Chordata. Reason: None of these have true coelom.

Q. Match the columns and find the correct combination.

Column I	Column II
(A) Nereis	1. Arthropoda
(B) Sea urchin	2. Annelida
(C) Scorpion	3. Echinodermata
	4. Mollusca

Q. Which among the following are incorrectly matched?

Animal	Characteristic	Taxon
A. Crabs	Nephridia	Arthropoda
B. Earthworm	Metamerism	Annelida
C. Spiders	Jointed appendages	Arthropoda
D. Nereis	Parapodia	Annelida

Q. Which one forms a connecting link between annelida and arthropoda?

Q. Question 6
Which among the following has open circulatory system?

(i) Arthropoda
(ii) Mollusca
(iii) Annelida
(iv) Coelenterata

(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iii)
(d) (ii) and (iv)

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