Chondrichthyes is characterised by
Placoid scale
Ventral mouth
Ctenoid scale and ventral mouth
Placoid scale and ventral mouth
D.
Placoid scale and ventral mouth
Chondrichthyes is one of the classes of super-class-Pisces, sub-phylum-Vertebrata and phylum Chordata. The members of class-Chondrichthyes are marine animals with a streamlined body and have a cartilaginous endoskeleton. Mouth is located ventrally. The skin is tough, containing minute placoid scales. The teeth are modified placoid scales which are backwardly directed, e.g., Dog fish (Scoliodon), sawfish (Pristis), great white shark (Carcharodorus sting ray (Trygon), etc.
The problem due to Rh factor arises when the blood of two (Rh and Rh) mixup
During Pregnancy
Through transfusion
In a test tube
Both (a) and (b)
The stratified epithelium is found in
Seminiferous tubule
Fallopian tube
Nasal cavity
Kidney tubules
The junction between the axon of one neuron and the dendrite of the next is called
Junction point
A synapse
A joint
Constant bridge
Which cranial nerve has the highest number of branches?
Facial nerve
Trigeminal
Vagus nerve
None of these
