Which of the following vector less method used for direct DNA transfer in plant cells
(A) Microinjection
(B) Electroporation
(C) Gene gun method
(D) `CaCl_(2)`+ cold + heat + cold

Which of the following is not a direct method of gene transger in plants:

Which of the following bacterial plasmids are commonly used as vectors for gene transfer in higher plants?

Which of the following compounds will be suitable for Kjeldahl's method for nitrogen estimation? (a) (b) (c) (d)

Which of the following method would not produce clones? (a) Double fertilization (b) Apomixis (c) Vegetative reproduction (d) Tissue culture

Using vector method prove that in any triangle ABC a^2=b^2+c^2-2bc cos A .

Which of the following method is useful for increasing the rate of pollination and facilitating higher crop yield ? (a) Apiculture (b) Sericulture (c) Dairying (d) Fishery

Which one of the following bacterial characters is also a plant character ? (a) Heterotrophic nutrition (b) Prokaryotic organisation (c) Presence of flagella (d) Rigid cell wall

Which one of the following bacteria is used for production of transgenic plants ? (a) Escherichia coli (b) Bacillus subtillis (c) Staphyloccoccus aureus (d) Agrobacterium tumefaciens

Which of the following methods is suitable for preventing an iron frying pan from rusting? (a)Applying grease (b) Applying paint (c) Applying a coating of zinc (d) All of the above

Which of the following statement is/are correct about diaphragms, cervical caps and vaults? (a) Barrier methods of contraception (b) Cover the cervix during coitus (C ) Protect the user from contracting STDs (d) They are reusable.