Identify each part and write whether it is haploid (n) or diploid (2n).
(i) Ovary, (ii) Anther, (iii) Egg, (iv) pollen, (v) Male gamete, (vi) Ovum,. (vii) Zygote

Identify each part in a flowering plant and write whether it is haploid : Anther _______________

Identify each part in a flowering plant and write whether it is haploid : Ovary__________________

Identify each part in a flowering plant and write whether it is haploid : Zygote_______________

Identify each part in a flowering plant and write whether it is haploid : Male gamete_______________

Identify each part in a flowering plant and write whether it is haploid : Pollen________________

Identify each part in a flowering plant and write whether it is haploid : Egg_________________

Determine the oxidation number of nitrogen in (i) N_2O (ii) NO_2 (iii) HNO_3 (iv) NH_3 .

Classify the following substances into elements, compounds and mixtures: (i) Cane sugar, (ii) Zinc, (iii) Oxygen (iv) Marble, (v) Bronze, (vi) Nitre, (vii) Air, (viii) Milk, (ix) Iron (x) Stainless steel.

Three coins are tossed once. Find the probability of getting (i) 2 heads (ii) at least 2 heads (iii) atmost 2 heads (iv) no head (v) no tail (vi) at most 2 tails. (vii) exactly two tails