STD 12 - 2. human reproduction — NEET STD 11 Science — Question

Which of the following gland is responsible for immunity in human ?

Dialysing unit (artificial kidney) contains a fluid which is almost same as plasma except that it has

Which characters for columnar or cuboidal are incorrect from given characters ?
(i) The cuboidal epithelium is composed of a single layer of tall and slender cells.
(ii) Nuclei in cells of cuboidal epithelium are located at the base.
(iii) The free surface of columnar epithelium may have microvilli.
(iv) The columnar epithelium is found in the lining of stomach and intestine and help in secretion and absorption.
(v) Ciliated epithelium is modified columnar or cuboidal cells and bear cilia on their free surface.
(vi) The function of ciliated epithelium is to move particles or mucus in a specific direction over the epithelium.
(vii) Epithelium is present in the inner surface of hollow organs like bronchioles and fallopian tubes.

Which one of the following animals is a coelenterate

The golden age of reptiles was

Which of the following muscular disorders is inherited?

Genes which code for a pair of contrasting traits are known as ........

Find the incorrect option regarding mechanism of urine formation in man.

Given below are four statements pertaining to separation of DNA fragments using Gel electrophoresis. Identify the incorrect statements.
(a) DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
(b) DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
(c) Smaller the size of DNA fragment, larger is the distance it travels through it.
(d) Pure DNA can be visualized directly by exposing to UV radiation.
Choose correct answer from the options given below: