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

In melandrium the sex determination type is

Which of the following 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 baby is determined by the father and not by the mother.

The summer sleep of frog is termed as

Two examples in which the nitrogenous wastes are excreted from body in the form of uric acid are

Which one is a true statement regarding DNA polymerase used in PCR?

Integumentary nephridia are also called

Which of the following are ‘multicellular grade’ organisms

For reaching left side of heart, blood must pass through