The skeleton of sponges is made up of___________?

Related Mcqs:

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

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

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

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

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

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

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

   A. Amoeboid cell
   B. Stipules
   C. Spicules
   D. Spines

5. 80% of the food of sponges consists of__________?

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

6. In sponges fertilization takes place in____________?

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

7. Which of the following animal has a hydrostatic skeleton?

   A. Earthworm
   B. Round worm
   C. Tape worm
   D. Pin worm

8. Scurvy and beri – beri and caused by the deficiency of___________?

   A. Vitamin B and C
   B. Vitamin B and D
   C. Vitamin C and B
   D. Vitamin A and B

9. Purple non-sulphur bacteria is an example of___________?

   A. Heterotrophic bacteria
   B. Chemosynthetic bacteria
   C. Photosynthetic bacteria
   D. Saprotrophic bacteria

10. What are our nose and ears made of___________?

    A. Cartilage
    B. Charades
    C. Charcoal
    D. Chitin

    Submitted by: Abuzar Akhtar