Question

15. Which of the following statements is/are correct?

A. Cnidarians can not reproduce sexually
B. Members of Cnidaria have an endoderm and ectoderm.
C. Nematocysts are stinging structures that Cnidarians and many other animal Phyla possess.
D. Given the following on the organism:
I. An animal
II. Multicellular
III. has tissues (diploblastic)
IV. lacks organs
V. is radially symmetrical
This organism could be a member of the Phylum Cnidaria
E. Sea anemones are members of the phylum Echinodermata

Answer 1

B

C

D

E

Step-by-step explanation:

B Cnidarians have endoderm and ectoderm this statement is correct

C Nematocyst is present in Cnidarians and other Phyla- They (Cnidarians) are large organelles produced from the Golgi apparatus as a secretory product within a specialized cell.

D That organ could be a Cnidaria

E sea anemones belong to the phylum echinodermata

Answer 2

Answer: Option B,C, D and E.

Step-by-step explanation:

Phylum cnidaria are group of animal species found mostly in aquatic habitats and most of they live in marine habitat. They have cnidocytes, specialized cells used for capturing prey which contain nematocysts organelles. They have mesoglea present between two layers of epithelium. They are radially symmetrical with tentacles surrounding their mouth. They have two body forms, the swimming Medusa and the sessile polyps.

Nematocysts is stinging organelles found in cnidaria and other animals for stinging their prey.

Sea anemone is a member if phylum echinodermata.