Diversity among Animals | Sindh Mdcat Past Paper MCQs | mosaicbro.com

Diversity among Animals | Sindh Mdcat Past Paper MCQs

7 of 46 questions (Page 3 of 7)

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15 Example of cnidarians includes all except:
Correct Answer: D
Explanation: Sponges belong to Porifera, not Cnidaria.
16 Class Elasmobranch have an exoskeleton of
Correct Answer: A
Explanation: Elasmobranchs (sharks/rays) have placoid scales.
17 Identify the phylum in which the larva is bilaterally symmetrical but the adult is radially symmetrical:
Correct Answer: C
Explanation: Echinoderm larvae are bilateral; adults become radial.
18 Archaeopteryx is a transitional stage between the members of which one of the following pairs?
Correct Answer: D
Explanation: Archaeopteryx shows reptilian and avian features.
19 Which vertebrate groups have scaly skin?
Correct Answer: D
Explanation: Reptiles and some fish (e.g., scales) have scaly skin.
20 Male and female sea urchins release their sperm and eggs into the water where fertilization takes place. How can their reproduction be described?
Correct Answer: C
Explanation: External fertilization leads to genetic variation.
21 Which one of the following is fish?
Correct Answer: D
Explanation: Sea horses are true fish (Pisces). Others are invertebrates.
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