Quiz 1_sth2073 Invertebrate Biology
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A group of species sharing an immediate ancestor but not including all descendants is known as _______.
QUIZ 1_STH2073 INVERTEBRATE BIOLOGY assesses understanding of key concepts in invertebrate zoology, focusing on paraphyletic groups, metazoan traits, poriferan body plans, and functions of choanocytes. Essential for students in biological sciences.
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- 2.
Most metazoans are tripoblastic animals.
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True
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False
Correct Answer
A. TrueExplanation
Tripoblastic animals are organisms which have three germ layers; ectoderm, endoderm and mesoderm.Rate this question:
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- 3.
Based on the following statements, which is NOT TRUE about the function of choanocyte in sponges?
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To capture small food particles.
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To capture incoming sperm for fertilization.
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To store digested food materials.
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To generate currents for maintaining the circulation of seawater within sponges
Correct Answer
A. To store digested food materials.Explanation
Archaeocytes are amoeboid cells that carry out phagocytosis. Other than that, they serve as storage of digested food materials.Rate this question:
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- 4.
Opening of the poriferans body walls consist of oscula that allows water in and ostia that lets water out.
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True
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False
Correct Answer
A. FalseExplanation
Ostia = allows water in; oscula = lets water outRate this question:
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- 5.
Members of Phylum Porifera are further divided into clasess based upon ___________.
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Chemical composition of support elements
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Types of body contruction
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The presence of choanocytes
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The morphology of support elements
Correct Answer(s)
A. Chemical composition of support elements
A. The morphology of support elementsExplanation
Members of Phylum Porifera are divided into classes based on the chemical composition and morphology of their support elements. The chemical composition refers to the materials that make up the support structures, such as calcium carbonate or silica. The morphology refers to the shape and structure of these support elements, which can vary among different classes of Porifera. Both factors play a crucial role in classifying and distinguishing the different classes within this phylum.Rate this question:
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- 6.
Members of Class Calcarea are distinguished from other classes by having spicules composed of __________.
Correct Answer(s)
calcium carbonateExplanation
Members of Class Calcarea are distinguished from other classes by having spicules composed of calcium carbonate. Calcium carbonate is a common mineral found in the shells of marine organisms, such as corals and mollusks. In the case of Class Calcarea, these spicules provide structural support and protection for the organisms. This is a defining characteristic of this class, as other classes may have spicules composed of different materials or may not have spicules at all.Rate this question:
- 7.
Osmoregulation in Phylum Protozoa is happen by means of a contractile vacuole.
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True
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False
Correct Answer
A. TrueExplanation
Osmoregulation is the process by which organisms regulate the balance of water and solutes in their bodies. In Phylum Protozoa, osmoregulation is achieved through the use of a contractile vacuole. The contractile vacuole acts as a water pump, collecting excess water from the cytoplasm and expelling it out of the cell. This helps maintain the proper balance of water and solutes within the cell, allowing the protozoa to survive in various environments. Therefore, the statement "Osmoregulation in Phylum Protozoa is happen by means of a contractile vacuole" is true.Rate this question:
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- 8.
Asexual (clonal) reproduction in Protozoan are by means of ________.
Correct Answer
binary fission and budding
budding and binary fissionExplanation
Protozoans are single-celled organisms that reproduce asexually through binary fission and budding. Binary fission is a process in which the cell divides into two identical daughter cells, while budding involves the formation of a smaller daughter cell that eventually separates from the parent cell. Both methods allow for the production of genetically identical offspring, ensuring the clonal reproduction of the protozoan. Therefore, the correct answer is binary fission and budding, or budding and binary fission.Rate this question:
- 9.
Amoebiosis that causes internal inflammation are responsible by _______________.
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Vorticella sp.
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Entamoeba histolytica
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Plasmodium palcifarum
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Trypanosoma sp.
Correct Answer
A. Entamoeba histolyticaExplanation
Entamoeba histolytica is responsible for causing amoebiosis, which is characterized by internal inflammation. This parasitic amoeba infects the intestines and can cause severe gastrointestinal symptoms such as diarrhea, abdominal pain, and inflammation of the intestinal wall. If left untreated, Entamoeba histolytica can invade other organs, leading to more serious complications like liver abscesses. Therefore, this organism is directly associated with the internal inflammation observed in cases of amoebiosis.Rate this question:
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Current Version
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Mar 18, 2023Quiz Edited by
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Oct 05, 2015Quiz Created by
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