Sample paper of biology class 12
Answers
Answer:
Explanation:Advantage of cleistogamy is:
a. No dependence on pollination c. Vivipary
b. Higher genetic variability d. More vigorous offspring
2 RrYy is crossed with rryy. Give a technical term for this cross:
a. Monohybrid Cross c. Test Cross
b. Dihybrid cross d. Back cross
3 How many molecules are found in histone molecule?
a. 1 b. 2 c. 4 d. 8
4 The vas deferens receive duct from seminal vesicles and opens into urethra as:
a. Epididymis b. Ejaculatory duct c. Ureter d. Efferent
ductile
5 Milky water in green coconut is:
a. Free nuclear liquid endosperm c. Liquid nucleus
b. Liquid female gametophyte d. Liquid chalaza
6 In oocyte, secondary maturation occurs in:
a. Ovary b. Abdominal cavity c. Fallopian tube d.
Ureter
7 The promoter and terminator site for transcription are located at:
a. 3’ and 5’ end of transcription unit respectively.
b. 5’ and 3’ end of transcription unit respectively.
c. 5’ end
d. 3’end