SAAT (English)

Biology & Environment: sample 23

These questions are ETEC/Qiyas's own officially published trial-exam questions, shown here with attribution. They are not sold and are not part of Smart Advanced Network for Education, Development & Achievement's original question bank.

Directions

Read the following questions. Choose the right answer.

There is only ONE correct answer to each question.

Which of the following animal orders does not have excretory organs?

Annelida
Anthropoda
Mollusca
Echinodermata

Show answer

Correct answer: D. Echinodermata

Why

Echinoderms (like sea stars) lack specialized excretory organs, relying instead on diffusion through the body wall/water vascular system; annelids, arthropods, and molluscs all have dedicated excretory structures.

Source: The Standardized Academic Achievement Test (SAAT) for the Science Track Trial Test (ETEC official) Open the official document

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