Which of the following are motile zooids in cnidarians?

Related Mcqs:

1. The only group of algae having no flagellated motile cells at any stage is___________?

   A. Chrysophyta
   B. Phaeophyta
   C. Pyrrophyta
   D. Rhodophyta

2. Radiolarians belong to which of the following protozoal group____________?

   A. Zooflagellates
   B. Actinopods
   C. Foraminifera
   D. Apicomplexans

3. Which of the following is an example of the living member of Psilopsida________________?

   A. Rhynia
   B. Psilophyton
   C. Psilotum
   D. Cooksonia

4. Which of the following statement about alternation of generation in bryophytes is incorrect?

   A. It involves alternation of morphologically different generations
   B. Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition.
   C. Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization
   D. Spore formation occurs through meiosis

5. Which of the following is a compensation point:

   A. Leaves respire and utilize O2 and release CO2.
   B. Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.
   C. Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.
   D. Rate of respiration becomes more than rate of photosynthesis.

6. Which of the following statement about the head of a chlorophyll molecule is incorrect?

   A. It is a porphyrin ring or tetrapyrrole ring structure
   B. It is flat, square and light absorbing
   C. Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.
   D. It is hydrophobic

7. Which of the following plays the major role in providing support to young herbaceous parts of the plant?

   A. Living cells of epidermis with higher turgor pressure.
   B. Living cells of cortex and pith with higher turgor pressure.
   C. Collenchyma cells
   D. All of these

8. which of the following hepatitis is more contagious ?

   A. HAV
   B. HBV
   C. HCV
   D. HDV

   Submitted by: muhammad irfan

9. Among the following which one is a diploblastic organism?

   A. Hydra
   B. Crabs
   C. Squids
   D. Earthworm

   Submitted by: Eesha Khalid

10. Which of the following plant group first formed true leaves?

    A. Psilopsida
    B. Lycopsida
    C. Sphenopsida
    D. Pteropsida

    Submitted by: Navid Muhammad