Nervous System — Biology STD 10 — Question

Name the Following :
The vein in which the urea concentration is maximum.

Name the Following :
The term used when menstruation in females stop at the age of 45-50 years.

Name the Following :
The monthly discharge of blood and disintegrated tissues in a human female.

Why excretion is necessary?

Which part of the root absorbs maximum water and why?

Define the following:
Natality

Name the Following: These are chemical substances that inhibit the growth of bacteria and are commonly used on the site of infection.

Name the following:
The pigmented circular area seen in the eye.

Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.

Using the destarched plant describe step by step how would you proceed to prove that in the absence of light the leaf cannot manufacture starch?