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

Which kind of therapy was given in 1990 to a four year-old girl with adenosine deaminase (ADA) deficiency?

Unstriped muscles are found in

Study the following statements and choose the correct option :
(i) The placenta facilitates the supply of oxygen and nutrients to the embryo.
(ii) Hormones like human chorionic gonadotropin (hCG), human placental lactogen (hPL). estrogens, progesterone only secreted by pregnant female.
(iii) During pregnancy the levels of hormones like estrogens, progesterone, cortisol, prolactin, thyroxine, etc., are increased several folds in the maternal blood.
(iv) The signals for parturition originate only from the placenta which induce mild uterine contractions called foetal ejection reflex.
(v) Foetal ejection reflex triggers release of oxytocin from the maternal pituitary.

“Secondary messenger” is

By the end of about .......... weeks, the body is covered with fine hair.

Select the correct match

A. Glycine	I. Amino acid
B. Triglyceride	II. Lipids
C. Uridine	III. Nucleoside
D. Inulin	IV. Carbohydrate

Organic evolution would have not been taken place

When male ejaculates sperms during coitus of which for normal fertility at least....... percent sperms must have normal shape and size and at least ...........per cent of them must show vigorous motility