80% of the food of sponges consists of__________?

Related Mcqs:

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

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

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

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

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

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

4. The skeleton of sponges is made up of___________?

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

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

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

6. In sponges fertilization takes place in____________?

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

7. The food of hydra consists of___________?

   A. Humus
   B. Detritus
   C. Dead microscopic animals
   D. Small crustaceans

8. Density gradient  centrifugation separates the materials on the basis of__________?

   A. Size alone
   B. Density alone
   C. Both a & b
   D. Velocity of movement

9. According to Lamarch evolution occurred as the result of__________?

   A. Natural selection
   B. The theory of recapitulation
   C. Inheritance of acquired characters
   D. Over production

10. Locomotion in diatoms is carried out with the help of__________?

    A. Valve
    B. Raphe
    C. Pseudopodium
    D. Cilia or flagella