Question

Hypnotoxin is produced by

• A. Sponges
• B. Bath sponge
• C. Nematocysts
• D. Leucosolenia

Answer 1

The correct option is C

Nematocysts

The correct option is C.

Explanation of the correct option:

1. Nematocysts are cell organelles found in specialized cells termed cnidocytes or cnidoblasts.
2. They are modified epidermal interstitial cells.
3. A Cnidoblast is an oval or spherical cell with a conspicuous nucleus that is on the basal side.
4. Within the cnidoblast is an oval or pyriform sac or bladder filled with hypnotoxin, a mixture of proteins and phenols.

Explanation of the incorrect option:

Option A:

1. Sponges are by far the most basic multicellular creatures.
2. Despite their multicellularity, they lack tissues and organs.
3. Water has an important function in feeding, gas exchange, and excretion.
4. The sponges' bodies have many holes or pores known as Ostia.
5. The sponge body structure is structured in such a manner that water flows through the body, filtering out food and absorbing dissolved oxygen while discarding waste.

Option B:

1. The bath sponge is another name for Euspongia.
2. Because of its texture, which is made up of fuzzy, sponge-like fibres.
3. It is similar to the sponges used for washing when having a bath.
4. As a result, euspongia are also known as bath sponges.
5. It is a hermaphroditic creature.

Option D:

1. Leucosolenia is a genus of calcareous sponges in the Leucosolenia family.
2. They create groups of curving vases, each ending in an osculum.

Final answer: Hypnotoxin is produced by nematocysts.