621. Of the following which one is not included in Proterostomes?
✅ B. Hemichordates
Option A: Arthropods Option B: Hemichordates Option C: Annelids Option D: Molluses Correct Answer : Hemichordates Read more
Biology MCQs – Page 32
622. Coelom that develops from the archenteron as outpouching is__________?
✅ B. Enterocoelom
Option A: Pseudocoelom Option B: Enterocoelom Option C: Schizocoelom Option D: None of these Correct Answer : Enterocoelom Read more
623. Of the following which one is not found in series proterostomia?
✅ D. Echinodermata
Option A: Annelida Option B: Arthropoda Option C: Mollusea Option D: Echinodermata Correct Answer : Echinodermata Read more
624. In most triploblasts after embryonic development the three layers are represented as___________?
✅ B. Structures formed from them
Option A: Separate layers of cells Option B: Structures formed from them Option C: Structures associated with them Option D: Their functions in body Correct Answer : Structures formed from them Read more
625. The function of coelom is__________?
✅ C. To provide space for the development of organs and systems
Option A: To increase the size of the animals Option B: To help in the functioning of reproductive system Option C: To provide space for the development of organs and systems Option D: None of these Correct Answer : To provide space for the development of organs and systems Read more
626. A sponge of Antarctica which is more than a meter tall is____________?
✅ A. Scolymastra joubini
Option A: Scolymastra joubini Option B: Euplectella Option C: Spongilla Option D: Leucoselenia Correct Answer : Scolymastra joubini Read more
627. The sponges in which sperms develop first are included in the category of__________?
✅ D. Protandrous
Option A: Peritandrous Option B: Pertandrous Option C: Protendrous Option D: Protandrous Correct Answer : Protandrous Read more
628. The skeleton of sponges is made up of___________?
✅ C. Both of these
Option A: Calcium Option B: Silica Option C: Both of these Option D: None of these Correct Answer : Both of these Read more
629. Sperms released in water are carried to the mesenchyme in sponges by__________?
✅ A. Amoeboid cell
Option A: Amoeboid cell Option B: Stipules Option C: Spicules Option D: Spines Correct Answer : Amoeboid cell Read more
630. The single main opening of the sponge cavity is____________?
✅ A. Osculum
Option A: Osculum Option B: Ostia Option C: Spongocoel Option D: None of these Correct Answer : Osculum Read more
631. Venus flower basket is also known as___________?
✅ B. Euplectella
Option A: Sycon Option B: Euplectella Option C: Leucoselenia Option D: Spongilla Correct Answer : Euplectella Read more
632. The fate of each blastomere is foretold. The cleavage will be as____________?
✅ D. Spiral and determinate
Option A: Spiral and indeterminate Option B: Radial and indeterminate Option C: Radial and indeterminate Option D: Spiral and determinate Correct Answer : Spiral and determinate Read more
633. The system well developed in the acoelomate is___________?
✅ D. All of these
Option A: Excretory system Option B: Nervous system Option C: Transport system Option D: All of these Correct Answer : All of these Read more
634. In acoelomates gut is ________ in origin.
✅ B. Endodermal
Option A: Ectodermal Option B: Endodermal Option C: Mesodermal Option D: None of these Correct Answer : Endodermal Read more
635. Aschelminthes is also known as____________?
✅ C. Nematodes
Option A: Protozoans Option B: Eumatazoa Option C: Nematodes Option D: Protoctist ancestors Correct Answer : Nematodes Read more
636. The name animal is derived from the word__________?
✅ A. Anima
Option A: Anima Option B: Anemia Option C: Aname Option D: All of these Correct Answer : Anima Read more
637. All the animals of the grade radiata are____________?
✅ A. Diploblastic
Option A: Diploblastic Option B: Triploblastic Option C: Both Option D: Unicellular Correct Answer : Diploblastic Read more
638. All of the following are coelomates except:____________?
✅ D. Aschelminthes
Option A: Deuterosomes Option B: Proterosomes Option C: Hemichordates Option D: Aschelminthes Correct Answer : Aschelminthes Read more
639. The radial symmetry is found in the animals of___________?
✅ C. Cnidaria
Option A: Protozoa Option B: Porifera Option C: Cnidaria Option D: All of these Correct Answer : Cnidaria Read more
640. Both radial and bilateral symmetry is found in the phylum____________?
✅ C. Echinodermata
Option A: Protozoa Option B: Porifera Option C: Echinodermata Option D: None of these Correct Answer : Echinodermata Read more