STD 12 - 10. biotechnology and its application — NEET STD 11 Science — Question

Non-competitive inhibitors alter

Silent valley of Kerala is preserved because:

Chromosomes always exist

Read the following statements :
(i) All events-from pollen deposition on the stigma until pollen tubes enter the ovule-are together referred to as pollen-pistil interaction.
(ii) Pollen-pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen.
(iii) Artificial hybridisation is achieved by emasculation and bagging techniques.
(iv) Removal of anthers from the flower bud before the anther dehisces referred to as bagging.
(v) Since two types of fusions, syngamy and triple fusion take place in an embryo sac the phenomenon is termed double fertilisation.
Of above statements which one is correct ?

Cell wall is absent in

The process of mitosis can be studied in

In taxonomic hierarchy, which of the following group of taxa will have less number of similarities as compared to other?

Which one of the following statements pertaining to plant structure is correct

Which of the following is not involved in the fertilization of fern