STD 12 - 6. evolution — NEET STD 11 Science — Question

Sodium, water and phosphate reabsorption is maximum in

Assertion: Steroid hormones, iodothyronines, etc., mostly regulate gene expression or chromosome function by the interaction of hormone-receptor complex with the genome.
Reason: It does not enter the target cell so interact with membrane-bound receptors.

The Leydig's cells secrete

The wrongly matched pair w.r.t. the organisms and their probable time of evolution is

Statement I: Cannabinoids interfere with the transpost of neuro-transmitter dopamine.
Statement II: Opioids are known for their effects on ardiovascular system of the body.

Chromosomal number in a cell of a flowering plant is

A kind of allergy is

How many statements are correct for fertilization?
i. The motile sperms swim rapidly enter into the uterus after insemination and finally reach fallopian tube.
ii. Fertilisation only occurs at the ampullary- isthmic junction.
iii. During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms.
iv. The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum and induce the completion of the meiotic division of the secondary oocyte.
v. Scientifically it is correct to say that the sex of the body is determined by the father and not by the mother.

Statement I: Overproduction of hormones by adrenal cortex cause Addison's disease.
Statement II: Catecholamines are also called emergency hormones or hormones of fight or flight.