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The figure sh...

Question

The figure shows four animals A, B, C and D. Select the correct answer regarding the characteristic feature of animals.

A

A and D have cnidoblasts for self-defence

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B

B, C and D have true coelom

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C

A and D respire mainly through gills

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D

B and C show radial symmetry

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Solution

The correct option is B B, C and D have true coelom
Coelom refers to the main body cavity of multicellular animals and contains the digestive tract and other organs. Both crab and scorpion which belong to Arthropoda and vertibrates like reptiles have true coelom. So, the correct answer is option B.

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Q. The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to common characteristics of two of these animals.

Q. Read the given statements characterising certain types of animals. Select the option which correctly exemplifies each of these types.

(i) Animal having external gills.
(ii) Animal having internal gills.
(iii) An animal showing tracheal respiration.
(iv) Animal revealing buccopharyngeal respiration.

Q. The given figures (A - D) show four animals. Select the correct option with respect to a common characteristic of any two of these animals.

Q. Read the following statements:

i) Spider and mosquito possess compound eye
ii) Jelly fishes possess cnidoblasts but comb-jellies lack them.
iii) Aphids increase crop yield
iv) All animals having true coelom are characterized by the presence of bilateral symmetry usually , tube -within-tube body plan, presence of mesoderm and true segmentation
v) The animals of the phylum porifera have originated from colonial protozoans.
Which of the above statements are correct?

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