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

A. Placenta
B. Notochord
C. Cranianta
D. Ligule

Related Mcqs:

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
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
Dorsal root of spinal nerves contain only __________ ?
A. Effectors neurons
B. Receptor neurons
C. Stimulators
D. Detector neurons
Submitted by: Rashid Mehmood
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.
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
Anus is surrounded by _____ types of muscles?
A. 2
B. 3
C. 1
D. 4
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
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
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
There are cells in human body called Faggot cells which cause__________?
A. AIDS
B. Tuberculosis
C. Smallpox
D. Leukaemia
Submitted by: Ali Mallah