The single main opening of the sponge cavity is____________?

Related Mcqs:

1. A sponge of Antarctica which is more than a meter tall is____________?

   A. Scolymastra joubini
   B. Euplectella
   C. Spongilla
   D. Leucoselenia

2. Fatty acids containing 18 C atoms and a single double bond is____________?

   A. Saturated Fatty acid
   B. Unsaturated fatty acid
   C. Oleic Acid
   D. Plamitic acid

3. The first stage of development in which a cavity appears is the__________?

   A. Neurula
   B. Morula
   C. Gastrula
   D. Balastula

4. A painful burning sensation produced in the chest cavity usually associated with the back flush of acidic chyme into the esophagus is__________?

   A. Pyrolysis
   B. Pyrosis
   C. Peristalsis
   D. Dyspepsia

5. In mouth cavity of many molluscs there is a rasping tongue like structure_________provided with many horny teeth.

   A. Ligule
   B. Radula
   C. Mantle
   D. Muscle

6. At the induction of action potential opening of Na+ gate with influx of Na+ is a ___________ processes?

   A. Active transport
   B. Passive transport
   C. Diffusion
   D. none of these

7. The opening and closing of stomata is directly controlled by the___________?

   A. Temperature
   B. pH
   C. Light
   D. None of these

8. There are _________ hypothesis which may explain opening and closing of stomata?

   A. One
   B. Two
   C. Three
   D. Four

9. E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is____________?

   A. 0.1-600 um
   B. 100-200 nm
   C. 1.1-1.5 um (width) 2.0-6.0 um (length)
   D. 0.75-1.25 um

10. The part of sporophyte which is called sporangium is____________?

    A. Capsule
    B. Foot
    C. Stalk
    D. None of these