Yes, it is the correct answer as all of the given diseases are caused by gram-negative bacteria. The causative agent of typhoid is Salmonella typhi (Gram-negative bacteria). Cholera is caused by Vibrio cholerae (Gram-negative bacteria). Plague is caused by Yersinia pestis (Gram-negative bacteria). Gonorrhoea is caused by Neisseria gonorrhoeae (Gram-negative bacteria).

Leucorrhea is caused due to a flagellated protozoan parasite Trichomonas vaginalis.

Yes, it is correct. Hashimoto’s disease is caused due to hyposecretion of thyroxine. Myxoedema is caused due to hyposecretion of thyroxine.

Causative agent of meningitis is Neisseria meningitidus (Bacteria). Causative agent of pneumonia is Diplococcus pneumoniae (Bacteria).

Klinofelter’s syndrome is caused due to trisomy of sex chromosome.

Mumps is caused by mumps virus, a member of the genus Rubulavirus in the family Paramyxoviridae. Measles (rubeola) is a skin disease with respiratory spread caused by Morbillivirus, a member of family Paramyxoviridae.

Genital herpes is caused by herpes simplex type 2 (HSV-2), a dsDNA virus that is a member of Herpesviridae. Mononucleosis is caused by the Epstein-Barr virus (EBV), a herpesvirus (dsDNA virus).

Cataract is a condition in which the eye lens becomes progressively opaque resulting in blurred vision. In glaucoma eye ball is stretches Eye ball shortens in hypermetropia. Nyctalopia is degeneration of rods due to vitamin A deficiency.

Menkes disease, also known as kinky-hair disease, is a rare X-linked recessive, lethal, neurodegenerative disorder of impaired copper transport.

Conn's syndrome is a disease of the adrenal glands involving excess production of a hormone, called aldosterone.

Yes, it is correct. Ehrlichiosis and anaplasmosis are rickettsial tickborne diseases.

Diabetes insipidus is caused due to hyposecretion of vasopressin or ADH.

Yes, this is the correct answer. Cystic fibrosis is an autosomal recessive genetic disorder that affects most critically the lungs and also the pancreas, liver and intestine. Phenylketonuria is an autosomal recessive metabolic genetic disorder characterised by homozygous or compound heterozygous mutations in the gene for the hepatic enzyme phenylalanine hydroxylase, rendering it nonfunctional.

Vitamin B₃ (Niacin) deficiency causes the disease pellagra in humans. Rickets is a softening of bones in immature mammals due to deficiency of vitamin D. Vitamin E deficiency in animals causes several disorders such as reproduction failure, liver necrosis, etc. Vitamin K deficiency leads to haemorrhagic conditions.

Both A and R are correct statements. Albinism is an autosomal recessive hereditary disorder. Albinism is caused due to inability to produce melanin pigment characterised by absence of normal colouration of skin.