MCQ
Corpus luteum is formed in
- ✓Ovary
- BTestes
- CBrain
- DKidney
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| Column $-I$ | Column $-II$ |
| $a.$ Solid symbol | $(i)$ Carrier of sex linked trait |
| $b.$ Horizontal line between symbols | $(ii)$ Offspring |
| $c.$ Horizontal line above the symbols | $(iii)$ Trait to be studied |
| $d.$ Dot in centre | $(iv)$ Parents |
$(i)$ Bacillus thuringiensis are available in sachets as dried spores which are mixed with kerosine and sprayed on to vulnerable plants
$(ii)$ B. thuringiensis are used to control butterfly caterpillars, but leave other insects unharmed
$(iii) $ The toxin of B. thuringiensis is released in the blood of larvae and the larvae get killed
$(iv)$ By the development of methods of genetic engineering B. thuringiensis toxin genes have been introduced