16 Questions
What is the difference in development fate between Protostomes and Deuterostomes?
Protostomes show determinate development, while Deuterostomes show indeterminate development.
What are some characteristics of Phylum Mollusca?
Highly diverse group of animals, some members have no sense organs or brains, other members have highly advanced features.
What is the main difference between Protostomia and Deuterostomia in terms of blastopore development?
In Protostomia, the blastopore forms the mouth, while in Deuterostomia, the blastopore forms the anus.
What is the significance of coelom formation in Deuterostomes?
In Deuterostomes, coelomate animals have the anus develop from the first opening in the embryo (Blastopore) and the mouth develops later.
What is the difference between Trochophore and Tornaria in terms of development?
Trochophore is common larval form in Mollusca, while Tornaria is the larval form of some echinoderms.
What is the role of Dr. Ahmed Soffar in the context of the text?
Dr. Ahmed Soffar is the Assistant Professor of Molecular Biology.
What is the function of the radula in an octopus?
Feeding
What is the primary body cavity in an octopus?
Haemocoel
What is the respiratory pigment in octopuses?
Haemocyanin
What is the shell lined by in octopuses?
Mantle
What is the body cavity reduced to in octopuses?
GONOCOEL
What is the function of the mantle cavity in octopuses?
Gas exchange
What are the classes of mollusks?
Aplacophora, Monoplacophora, Polyplacophora, Scaphopoda, Gastropoda, Bivalvia, Cephalopoda
What type of symmetry do octopuses exhibit?
Bilateral symmetry
What kind of excretory system do octopuses have?
Metanephridia
Where is the dorsal heart located in octopuses?
Pericardial cavity
Test your knowledge on the first lecture of invertebrate biology, covering Phylum Mollusca, Phylum Echinodermata, phylogeny, coelom formation, Protostomia, and Deuterostomia.
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