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

Spiracles found in cockroach are

In a resting neuron, the axonal membrane is

Which one of the following statement are correct.
(i) Mendel's experiments had small sample size which gave greater credibility to the data.
(ii) A true breeding line shows a stable trait inheritance and expression for several generations.
(iii) A recessive parental trait is expressed only in its heterozygous condition.
(iv) Failure of segregation of chromatids during cell division results in aneuploidy.
(v) Chromosomal disorders are mainly determined by alteration or mutation in a single gene.
(vi) Thalasemia and cystic fibrosis are Mendelian disorders.
(vii) Sickle cell anemia is an X-linked trait.
(viii) Incomplete or mosaic inheritance is an example of pre-Mendelian concept of blending inheritance.
(ix) Test cross is a special type of back cross.
(x) Chromosomal aberrations are commonly observed in cancer cells.

Select the correct group of biocontrol agents

Lymph glands and nodes help to

How many metacarpals are present in the palm?

Prothrombin is a

Assertion : Secreting hypotonic urine is effective in reducing urinary loss of water.
Reason : Hypotonic urine is more concentrated and higher in osmotic pressure than the blood

Cancer can be caused by the use of