What will come in the place of question mark (?) in the

Which one of the following micro-organism oxidizes nitrite to nitrate?

 Which type of soil has the lowest particle density?

Edible part of sprouting broccoli is 

Who discovered Viroids?

Scientific name of Cowpea 

Which of the following peach varieties is considered self-unfruitful and requires cross-pollination?

When there is crossing over between centromere and gene under consideration, the segregation of that gene takes place during:

Which of the following is not a factor of production?

Uptake of silicon in the form of silicate anion in cereals such as rice is required for

Generally fats with saturated fatty acids are________ at room temperature.