Examkin

Soru

Zorluk: OrtaHigher Invertebrates: Annelida, Mollusca, Arthropoda, and Echinodermata

A biological specimen collected during a field study exhibits three distinct body divisions (head, thorax, and abdomen), one pair of antennae, and three pairs of jointed walking legs attached to the thorax. Which class of arthropods does this organism belong to, and what is its primary excretory organ?

  1. Insecta and Malpighian tubulesCevap
  2. B
    Arachnida and Malpighian tubules
  3. C
    Crustacea and nephridia
  4. D
    Insecta and nephridia

Cevap

The specimen belongs to the class Insecta and utilizes Malpighian tubules for excretion.
The combination of three distinct body divisions (head, thorax, abdomen), one pair of antennae, and three pairs of jointed walking legs definitively identifies the specimen as a member of the class Insecta. In insects, nitrogenous wastes are removed from the body fluid by Malpighian tubules.

Adım Adım Çözüm

1
Analyze body divisions and appendages
Three body divisions (head, thorax, abdomen), one pair of antennae, and three pairs of jointed legs (total of 6 legs) are diagnostic features of the class Insecta within the phylum Arthropoda.
Arachnids possess 4 pairs of legs and 2 body divisions, while crustaceans have 2 pairs of antennae and 5+ pairs of legs.
2
Identify the primary excretory organ
Insects rely on Malpighian tubules to excrete nitrogenous wastes (principally uric acid) while conserving body water.
Nephridia belong to annelids, flame cells to platyhelminthes, and green glands to crustaceans.

Anahtar Kavram

Diagnostic features and excretory structures of Arthropod classes
Tahmini Süre:1m 0s
Bu soruyu puanla

Konular

Higher Invertebrates: Annelida, Mollusca, Arthropoda, and Echinodermata

Bu konudan daha fazla soru