Plant Growth and Mineral Nutrition — BIOLOGY STD 12 Science — Question

Complete the following table:

Carcinogen	Organ affected
N-nitrosodimethlene	————–
Aflatoxin	———-
————–	Vagina
————–	Urinary bladder
————–	Prostate
————–	Skin and lungs

Sketch and label process of formation of beads on strings/fibres from chain of nucleosomes.

Classify the following:
(i) UUU, (ii) CUA, (iii) UAA, (iv) AUG, (v) UAG, (vi) UGA

Column A	Column B
1. Initiator codon	————–
2. Stop codons	————-
3. Codon that codes for Phenyl alanin	————–
4. Codon that codes for leucine	————-

Classify the following:
(i) Eosinophils (ii) T-lymphocytes (iii) Neutrophils (iv) Basophils (v) B-lymphocytes (vi) Monocytes

Column A	Column B
(1) Phagocytic cells	————
(2) Cells involved in giving immune response	————
(3) Cells that increase during allergic and anti-allergic responses	————

Emigration, Immigration, More mortality, Unlimited resources, More natality, Continuous reproduction.

Column A	Column B
(1) Decrease in population density	————–
(2) Increase in population density	—————
(3) Exponential growth	————–

a. Identify A and B in the given diagram.
b. What is the conclusion of the given experiment?

Classify the following:
i. Hairy leaves in wheat
ii. Nectar-less cotton having smooth leaves
iii. Hairy leaves in cotton
iv. Solid stem in wheat

Resistance to insects	Morphological characters
Jassids	————
Cereal leaf beetle	————
Stem borers	————–
Bollworms	—————

a. Identify A. Which enzyme joined them?
b. Identify B. What is its function ?