Understanding Sponges: Anatomy and Ecology Quiz

1. What is the scientific name for the structure known as Venus Flower Basket?

Phylum Cnidaria - Class Scyphozoa - Aurelia aurita

Phylum PoriferaClass HexactinellidaEuplectellaVenus Flower Basket

Phylum Platyhelminthes - Class Turbellaria - Dugesia

Class Anthozoa - Actiniaria - Stichodactyla helianthus

2. What is the structure shown in the image?

Cross section of a commercial sponge. Note the large excurrent canals

Cross section of a plant leaf. Note the stomata and vascular bundles.

Cross section of a human heart. Note the ventricles and atria.

Cross section of a fungal hyphae. Note the septate divisions.

The correct answer describes the features of a commercial sponge, such as the excurrent canals. The incorrect answers provide similar structures found in nature, but they do not match the specific characteristics of the commercial sponge as explained in the correct answer.

Explanation

The correct answer describes the features of a commercial sponge, such as the excurrent canals. The incorrect answers provide similar structures found in nature, but they do not match the specific characteristics of the commercial sponge as explained in the correct answer.

3. What is the basic structure of a Sponge?

Atrium, tentacles, nematocysts, stinging cells, gastrovascular cavity, basal disc

Spongocoel, oscullum, spicules, ostium, porocytes, mesophyl

Peduncle, calyx, corolla, stamen, pistil, petals

Hyphae, mycelium, spores, rhizoids, septa, fruiting bodies

Sponges are multicellular aquatic animals that lack true tissues and organs. The basic structure of a sponge includes features like spongocoel (central cavity), osculum (opening for water exit), spicules (support structures), ostium (pores for water intake), porocytes (cells that control water flow), and mesophyl (middle layer of cells).

Explanation

Sponges are multicellular aquatic animals that lack true tissues and organs. The basic structure of a sponge includes features like spongocoel (central cavity), osculum (opening for water exit), spicules (support structures), ostium (pores for water intake), porocytes (cells that control water flow), and mesophyl (middle layer of cells).

4. What is this structure?

Coral reefs

Glass sponge spicules

Moss spores

Volcanic rock formations

Glass sponge spicules are skeletal elements made of silica that provide structural support for glass sponges. They are distinct from coral reefs, moss spores, and volcanic rock formations.

Explanation

Glass sponge spicules are skeletal elements made of silica that provide structural support for glass sponges. They are distinct from coral reefs, moss spores, and volcanic rock formations.

5. What is the structure shown in the image?

Human lung tissue

Prepared slide of the cross section of Grantia (Schypha)

Plant stem under the microscope

Fish scale viewed under a microscope

The correct answer refers to a specific type of prepared slide depicting the cross section of a biology specimen. The incorrect answers are commonly mistaken for similar microscope slides but do not match the details provided in the question.

Explanation

The correct answer refers to a specific type of prepared slide depicting the cross section of a biology specimen. The incorrect answers are commonly mistaken for similar microscope slides but do not match the details provided in the question.