Calcium carbonate structures from the skeleton of
A) Echinodermata
B) Mollusca
C) Protochordata
D) Nematoda
Answered Feb 05, 2023
Correct option is B) Mollusca
Salient features of phylum Echinodermata (Echinus – spines, derma – skin) 1. Habitat: These are exclusively marine. 2. Forms: Members of this phylum are solitary, sedentary or free-living and gregarious, benthic. 3. Body...
C) calcium phosphate & calcium carbonate
Correct option is D) Matrix
B) Sodium carbonate
Correct option is B) Fins
(D) Arthropoda – Green glands
B) i – z, ii – x, iii – y
Correct Answer - A Both A and R are correct and R is the corret explanation of A .
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