Question

Виберіть одне правильне твердження 60 балов основу покривів членістоногих складає органічна речовина - хітин членістоногі походять від плоских черв'яків павуки дихають трахеями

Answer 1

Ответ:

основу покривів членістоногих складає органічна речовина - хітин

Объяснение:

Answer 2

Ответ:

1правильне там правильне твердження

Answer 3

The correct statement is: 60% of the exoskeleton of arthropods is made up of organic material called chitin.

Arthropods, including insects, spiders, and crustaceans, have an exoskeleton that provides support and protection for their bodies. The exoskeleton is composed of a tough, flexible material called chitin, which is an organic compound made up of long chains of modified glucose molecules. Chitin is a polysaccharide that gives strength and rigidity to the exoskeleton, allowing arthropods to maintain their shape and protect their internal organs [[1]].

The statement that "arthropods are descended from flatworms" is incorrect. Arthropods and flatworms belong to different phyla and have distinct evolutionary histories. Arthropods are part of the phylum Arthropoda, while flatworms belong to the phylum Platyhelminthes. These two groups of organisms have different body plans, developmental processes, and evolutionary relationships [[2]].

The statement that "spiders breathe through tracheae" is also incorrect. Spiders, like other arachnids, do not have tracheae. Instead, they have book lungs or tracheal systems. Book lungs are specialized respiratory organs found in spiders and some other arachnids. They consist of thin, leaf-like structures called lamellae that are stacked together like the pages of a book. Oxygen is exchanged between the air and the spider's circulatory system through these structures [[3]].

To summarize: - The correct statement is that 60% of the exoskeleton of arthropods is made up of organic material called chitin. - Arthropods are not descended from flatworms; they belong to a different phylum. - Spiders do not breathe through tracheae; they have book lungs or tracheal systems.

I hope this clarifies the information for you! Let me know if you have any further questions.