Environmental Issues. — BIO BOTANY STD 12 — Question

Statement 1: Self-sterility in Nicotiana is controlled by multiple alleles.
Statement 2: Multiple alleles are always responsible for the same character.

Statement (1): Trichoderma species is a free-living bacteria.
Statement (2): It acts as a potent biocontrol agent

Biochar is __________
(i) a kind of char coal used as a soil amendment
(ii) a potent way of sequestring carbon
(iii) made from biomass via pyrolysis
(iv) a notable solid, rich in carbon.

Which one of the following ploidy is irrelevant to others?

Mutation theory was proposed by __________

Assertion (A): DMH -11 is a transgenic mustard.
Reason (R): It is developed by using bamase/ barstar technology.

Self-ligation is prevented by __________

Assertion (A): Black pepper is a spice.
Reason (R): Condiments are flavouring substances, generally added after the cooking of food.

When does World Ozone Day is observed?

Tetracycline is obtained from