Sperms released in water are carried to the mesenchyme in sponges by__________?

Related Mcqs:

1. The sponges in which sperms develop first are included in the category of__________?

   A. Peritandrous B. Pertandrous C. Protendrous D. Protandrous...

2. Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of ____________?

   A. Chemotropic movement B. Chemotactic movement C. Chemosastic movement D. Haptonastic movement...

3. Sperms are _________ in origin.

   A. Ectodermal B. Mesodermal C. Endodermal D. None of these...

4. The skeleton of the sponges is in the form of variously shaped needle like structures called___________?

   A. Stripules B. Spicules C. Brails D. Spines...

5. Inner layers of the sponges are made up of__________?

   A. Pinacocytes B. Choanoderm C. Choanoytes D. Pinacoderm...

6. The skeleton of sponges is made up of___________?

   A. Calcium B. Silica C. Both of these D. None of these...

7. 80% of the food of sponges consists of__________?

   A. Detrital organic particles B. Zooplankton and small animals C. Phytoplanktons D. all of these...

8. In sponges fertilization takes place in____________?

   A. Ectoderm B. Mesenchyme C. Endoderm D. Uterus...

9. Mastication is carried out by__________?

   A. Teeth B. Tongue C. Smooth muscles D. All of these...

10. Most of the photosynthesis on earth is carried by__________?

    A. Kelps B. Gymnosperms C. Angiosperms D. Algae...