252.Cereals are deficient in?

a) Calcium
b) Iron
c) Vit B
d) Vit C


Ans-d)Vit C


Explanation:“Traces of Vit. C occur in fresh meat and fish But scarcely in cereals”.
(Ref: Park 18th: pg 448)

251.) A person showing two cell lines derived from two different zygotes is?

a) Chimerism
b) Mosaicism
c) Segregation
d) Pseudo-dominance

Ans-a)Chimerism

Explanation:a chimera is an animal that has two or more different populations of genetically distinct cells that originated in different zygotes; if the different cells emerged from the same zygote, it is called a mosaicism.

250.Incidence of natal and neonatal teeth is estimated to be

a.1:2000 and 1:30,000
b.1:1000 and 1:30,000
c.1:3000 and 1:20,000
d.1:4000 and 1:20,000

Ans-b.1:1000 and 1:30,000