When explants are cultured on the appropriate medium and gave rise to unorganized, growing and dividing mass of cells, it is called………..
a) protoplast culture
b) meristem culture
c) cell-suspension culture
d) callus culture
Explanation: any plant tissue is used as an explant
Which of the following culture type is used to obtain some drug compounds which are generally obtained from specific parts of adult plant?
a) protoplast culture
b) meristem culture
c) cell-suspension culture
d) callus culture
Explanation: e.g. quinine from cinchona and digitoxin from difitalis
Protoplasts are cells with …….removed.
a) cell membrane
b) nuclear membrane
c) cell wall
d) cytoplasm
Explanation: protoplasts are most commonly isolated from either leaf mesophyll cells or cell suspensions
Protoplast cultures can be used to develop whole plants by………
a) organogenesis
b) somatic embryogenesis
c) spermatogenesis
d) both a and b
Explanation: genetic variations can also be induced in these somatic embryos
Which of the following tissues are rapidly dividing and growing tissues in plants?
a) mesophyll
b) meristem
c) parenchyma
d) collenchymas
Explanation: meristems are found on the apices of roots and shoots
A tissue culture in which meristems are used as explants is called……..
a) protoplast culture
b) meristem culture
c) cell-suspension culture
d) anther culture
