21.
Bombay Smoke Nuisance Act has been enforced only in case of smoke emanating from

22.
Assertion (A) Yeast cells have alcoholic fermentation.
Reason (R) Fermentation is an aerobic process.

24.
Match List-I with List-II and select the correct answer:
List-I List-II
a. Spirogyra 1. Cup shaped chloroplast
b. Oedogonium 2. Reticulate chloroplast
c. Chlamydomonas 3. Star-shaped chloroplast
d. Zygnema 4. Specialchloroplast

27.
When the embryos are developed from the cells of the nucellusor integumentsand push themselves into the embryo sac, the phenomenon is known as

29.
Consider the following statements and choose the correct answer:
1. Petkus winter rye may be vernalized in the seed stage
2. Petkus winter rye has an obligate requirement for vernalization
3. Under continuous light, unvernalized Petkus winter rye will "head" in 15 weeks
4. Petkus winter rye differs from henbane in that the vernalization stimulus, once received, is not transmitted across a graft union

30.
In the fourth oxidation step of the Krebs cycle,