STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question

Assertion : In case of incomplete linkage, linked gene show new combination along with parental combination.

Reason : In case of incomplete linkage, linked genes are separated by crossing over.

Assertion : Mast cells in the human body release excessive amounts of inflammatory chemicals, which cause allergic reactions.

Reason : Allergens in the environment on reaching human body stimulate mast cells in certain individuals.

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.

Reabsorption of useful substances back into the blood from the filtrate in a nephron occurs in

A pair of contrasting characters is termed as

The ducts of mammary gland are lined by

Choose correct sentence.