It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates

Related Mcqs:

1. Sodium ions are “pumped” from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of

   A. Diffusion B. Passive transport C. Osmosis D. Active transport...

2. A condition in which there is a decrease of oxygen to the tissue despite adequate blood flow to the tissue is_________?

   A. Aphasia B. Dysphasia C. Hypoxia D. None Submitted by: Neelam Parri...

3. Dorsal root of spinal nerves contain only __________ ?

   A. Effectors neurons B. Receptor neurons C. Stimulators D. Detector neurons Submitted by: Rashid Mehmood...

4. Vascular Cambium initially appears as actively dividing cells between_________________?

   A. Primary Xylem and secondary xylem. B. Primary xylem and secondary phloem. C. Primary xylem and primary phloem D. Secondary xylem and secondary phloem....

5. The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

   A. Deffusion B. Osmosis C. Active transport D. None of these...

6. Anus is surrounded by _____ types of muscles?

   A. 2 B. 3 C. 1 D. 4...

7. Vacuoles are fluid filled sacs surrounded by a membrane called__________?

   A. tonoplast B. nuclear membrane C. cell membrane D. cell wall Submitted by: Muhammad Nawaz...

8. If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:

   A. 9 B. 5 C. 6 D. 7...

9. If the number of chromosomes in most body cells of a mammal is 40, the cells in the seminiferous tubule will have___________?

   A. 40 chromosomes B. 20 chromosomes C. 10 chromosomes D. While some other will have 20 Submitted by: Rashid Mehmood...

10. There are cells in human body called Faggot cells which cause__________?

    A. AIDS B. Tuberculosis C. Smallpox D. Leukaemia Submitted by: Ali Mallah...