A scientist removed some cells from the growing point of a plant and placed it in a suitable medium leading to the formation of a shapeless lump of mass X. X is then transferred to another medium which stimulates it to develop roots. When I with developed roots is placed in a yet another medium, then it develops shoots to form tiny plantlets. These plantlets can then be transplanted in pots or soil where they can grow to form mature plants.
1. What is the shapeless lump of mass X known as ?
(i) Callus
(ii) spores
(iii) culture lump
2. What name is given to this method of producing new plants ?
(i) fission
(ii) budding
(iii) Vegetative propogation
(iv) Tissue culture
3. The growth medium used in this method contains plant nutrients in the form of a 'jelly'. Name this jelly.
(i) Agar
(ii) Rage
4. What is the general name of chemicals used to stimulate the growth of plant cells and development of roots and shoots ?
(i) Plant hormones
(ii) Animals hormones
5. Name any plant which is produced by this method.
(i) Dahlia
(ii) Marigold
(iii) Begonia
(iv) Bryophyllum
