Pearl is secreted around the
Mantle layer
Foreign particle between prismatic and nacreous layer
Foreign particle between mantle and nacreous layer
The shell
Micropropagation is
Which of the following is the pair of biofertilizers ?
Assertion : In plant tissue culture somatic embryos can be induced from any plant cell.
Reason : Any viable plant cell can differentiate into somatic embryos.
Assertion $(A)$ : Vernalization is acceleration of subsequent flowering by low temperature treatment.
Reason $(R)$ : Site of vernalization is apical meristem.
Match following columns.
Column $- I$ | Column $- II$ |
$(a)$ Cross breeding | $(x)$ Jaya, Ratna |
$(b)$ Interspecific hybridization | $(y)$ Saccharum barberi |
$(c)$ Better - yielding semi - dwarf varieties | $(z)$ Hirsadale |
$(d)$ South Indian variety of sugar cane | $(w)$ Mule |
$(v)$ Saccharum officinarum |