Question 1

Which of the following best explains why mitochondria and chloroplasts in some protists have three or more membranes?

Accepted Answer

They are the result of secondary endosymbiosis, where a eukaryotic cell engulfed another eukaryote already containing these organelles.

Question 2

A researcher observes a protist that moves using pseudopodia and engulfs food particles by phagocytosis. To which group does this organism most likely belong?

Accepted Answer

Amoeba

Question 3

Which of the following statements about animal embryonic development is correct?

Accepted Answer

In deuterostomes, the blastopore becomes the anus.

Question 4

A scientist is studying a marine organism with a porous body, choanocytes, and no true tissues. Which phylum does this organism belong to?

Accepted Answer

Porifera

Question 5

Which of the following best describes the difference between a coelom and a pseudocoelom?

Accepted Answer

A coelom is derived solely from mesoderm, while a pseudocoelom is derived from both mesoderm and endoderm.

Question 6

Which of the following is a real-world application of understanding the molting process (ecdysis) in arthropods?

Accepted Answer

Improving pest management strategies by targeting insects during vulnerable molting stages.

Question 7

A student claims that all protists are unicellular and simple. Which statement best corrects this misconception?

Accepted Answer

Some protists, such as kelp, are multicellular and can have complex structures.

Question 8

Which of the following features is unique to cnidarians and is used for prey capture?

Accepted Answer

Cnidocytes containing nematocysts

Question 9

A biologist is comparing two aquatic animals. One has a gastrovascular cavity and radial symmetry, while the other has a complete alimentary canal and bilateral symmetry. Which phyla do these animals most likely belong to?

Accepted Answer

Cnidaria and Annelida, respectively

Question 10

Which of the following statements about the SAR supergroup is correct?

Accepted Answer

It includes Stramenopiles, Alveolates, and Rhizarians, grouped based on genetic and morphological data.

Question 11

Which of the following best describes the function of the contractile vacuole in freshwater protists?

Accepted Answer

It expels excess water to prevent cell lysis in hypotonic environments.

Question 12

Which of the following is a distinguishing feature of lophotrochozoans?

Accepted Answer

Presence of a trochophore larval stage or a lophophore feeding structure

Question 13

A marine biologist finds an animal with a closed circulatory system, tentacles derived from the foot, and advanced nervous system. To which class does this animal most likely belong?

Accepted Answer

Cephalopoda

Question 14

Which of the following statements about insect respiration is correct?

Accepted Answer

Insects use spiracles and tracheal tubes to deliver oxygen directly to tissues.

Question 15

Which of the following best explains why rotifers are considered pseudocoelomates?

Accepted Answer

Their body cavity is not fully lined by mesoderm.

Question 16

Which of the following is a correct pairing of animal body plan and example?

Accepted Answer

Bilateral symmetry – earthworm

Question 17

Which of the following statements about protist classification is accurate?

Accepted Answer

Protists are a paraphyletic group, meaning they do not include all descendants of a common ancestor.

Question 18

Which of the following is a function of amoebocytes in sponges?

Accepted Answer

Transporting nutrients and producing structural fibers within the mesohyl

Question 19

Which of the following best describes the evolutionary significance of choanoflagellates?

Accepted Answer

They are protists closely related to animals, providing insight into the origin of multicellularity.

Question 20

Which of the following statements about metamorphosis in insects is correct?

Accepted Answer

Complete metamorphosis involves distinct larval and adult stages that are morphologically different.

Protists and Invertebrate Diversity: Structure, Function, and Evolution

Guida di studio - Domande di pratica

Study guide - Flashcard