STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

Which organelle has electron transport system

What is the approximate ratio of animals and plants species in our country?

Exponential growth in human population was done in

In Human body the lymphoid tissue also located within the lining of the major tracts. These tracts are:

Enzymes are destroyed

When gynoecium is present in the topmost position of the thalamus, the ovary is known as

Which is incorrect statement for wind pollinated plants ?

Which of the following statements are correct for Griffith experiments ?
(i) Frederick Griffith did experiments with Streptococcus pneumoniae.
(ii) Mice infected with the S strain die from pneumonia infection but mice infected with the R strain do not develop pneumonia.
(iii) Heat-killed S strain bacteria injected into mice did not kill them.
(iv) Mixture of heat-killed S and live R bacteria injected into mice then the mice died, and living S bacteria recovered from the dead mice.
(v) Some transforming principle' called genetic material transferred from the heat-killed S strain to R strain bacteria and enabled the R strain to become virulent.
(vi) The biochemical nature of genetic material was not defined from this experiments.