Which Two Animals Have No Distinct Circulatory System

question 1

Multiple Choice

Which two animals have no distinct circulatory system?

• A) grasshopper and fish
• B) grasshopper and hydra
• C) hydra and fish
• D) sponge and fish
• E) sponge and hydra

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Definitions:

D-Arabinose

A naturally occurring aldopentose sugar, notable for its role in the biosynthesis of many plant and bacterial polysaccharides.

Kiliani-Fischer Synthesis

A chemical reaction procedure used for the synthesis of monosaccharides by elongating the carbon chain of an aldose and subsequently introducing a new stereocenter, enabling the derivation of higher sugars from simpler ones.

Tollen's Test

A chemical reaction used to detect aldehydes, where a positive result leads to the formation of a silver mirror on the reaction vessel.

Methyl Iodide

Methyl iodide, also known as iodomethane, is a chemical compound with the formula CH3I, used as a methylating agent in organic synthesis.