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

Related Mcqs:

1. The skeleton of sponges is made up of___________?

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

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. Bean shaped cells in plants are_________?

   A. mesophyll cells
   B. xylem cells
   C. phloem cells
   D. guard cells

   Submitted by: Maryam Aftab

9. Circular disc shaped structure with a round hole is ___________ ?

   A. Iris
   B. Pupil
   C. Horoid coat
   D. Ciliary body

   Submitted by: Rashid Mehmood

10. Bean shaped cells in plants are: _________?

    A. Mesophyll cells
    B. Xylem Cells
    C. Phloem Cells
    D. Guard Cells

    Submitted by: Sajid Hussain Gopang