Root cells of wheat has 2n = 42 chromosomes. Which one of the following is the basic chromosome number of wheat?

• 42

• 21

• 7

• 14

Which of the following diseases is related to cadmium pollution?

• Minamata

• Pneumoconiosis

• Anaemia

• Itai- Itai

First genetically modified plant commercially released in India is

• golden rice

• slow ripening tomato

• Bt brinjal

• Bt cotton

MRI is not allowed in the following conditions except one. Identify the exception

• Presence of pacemaker in the body

• Pregnant women

• Person suffering from stroke

• Presence of metallic plate in the body for treatment of broken bones

Exine of pollen grain is made up o

• pectocellulose

• lignocellulose

• sporopollenin

• pollen kit

Micropropagation is a technique for production of

• true to type plants

• haploid plant

• somatic hybrids

• somaclonal plants

Hormone responsible for the secretion of milk after parturition is

• ICSH

• Prolactin

• ACTH

• LH

In a DNA molecule, distance between two bases is

• 2 nm/ 20 Å

• 0.2 nm/ 2 Å

• 3.4 nm/ 34 Å

• 0.34 nm/ 3.4 Å

Balbiani rings are the sites of

• DNA replication

• RNA and protein synthesis

• synthesis of lipids

• synthesis of polysaccharides

Test cross is a cross between

• hybrid and dominant parent

• hybrid and recessive parent

• two hybrid parents

• two distantly related species