STD 11 - 18. Neural control and coordination — NEET STD 11 Science — Question

In cockroach, male genital open into.....

Which statements are true regarding Mendelian disorder ?
(i) Haemophilia is a X - linked recessive trait shows transmission from carrier female to male progeny.
(ii) Haemophilia is a disorder in which a vital factor for clotting of blood is lacking due to this, in an affected individual a simple cut will result in non-stop bleeding.
(iii) The family pedigree of Queen Victoria shows a number of haemophilic descendents as she was a carrier of the disease.
(iv) All type of anaemia is an autosome linked recessive trait.
(v) Sickle-cell anaemia is due to a mutant allele on chromosome 11.
(vi) Sickle-cell anaemia disease is controlled by two pair of allele.
(vii) The mutant haemoglobin molecule of sickle cell RBC undergoes polymerisation under high oxygen tension.

Which of the following statement for sewage is correct?

Delete the odd one

The unit of photoreception, in a compound eye of cockroach and other insects, is

Test cross in plants or in Drosophila involves crossing

Lymph glands and nodes help to

The process of release of urine is called micturition and the neural mechanisms causing it is called the micturition reflex.
(i) Urine formed by the nephrons is ultimately carried to the urinary bladder.
(ii) This signal is initiated by the stretching of the urinary bladder as it gets filled with urine.
(iii) In response, the stretch receptors on the walls of the bladder send signals to the CNS.
(iv) The CNS passes motor messages to initiate the contraction of smooth muscles of the bladder causing the release of urine.
Choose correct option which contain correct order of phenomena of micturation :-

Thymus gland releases ...... hormone

In his experiments for origin of life, Miller obtained