WAEC Agricultural Science Past Questions & Answers - Page 71

351.

A breeding method which involves the production of heterozygous populations from homozygous lines is

A.

Inbreeding

B.

Introduction

C.

Selection

D.

Hybridization

Correct answer is A

No explanation has been provided for this answer.

352.

Imported plants are expected to be

A.

Vaccinated

B.

Improved upon

C.

Treated

D.

Quarantined

Correct answer is D

No explanation has been provided for this answer.

353.

Heat treatment of oil palm seeds before sowing helps to

A.

Mobilize nutrients for the embryo

B.

Harden the mesocarp

C.

Break embryo dormancy

D.

Improve disease resistance

Correct answer is C

No explanation has been provided for this answer.

354.

The correct sequence of pre-planting operations in

A.

Clearing→stumping→ploughing→harrowing

B.

Stumping→ploughing→harrowing→clearing

C.

Bulldozing→harrowing→stumping→ploughing

D.

Clearing→bulldozing→stumping→harrowing

Correct answer is A

No explanation has been provided for this answer.