Year :
2019
Title :
Agric Science
Exam :
JAMB Exam
Paper 1 | Objectives
51 - 60 of 80 Questions
| # | Question | Ans |
|---|---|---|
| 51. |
In which of the soil layer does most biological activity occur? A. B - horizon B. C - horizon C. D - horizon D. A - horizon Detailed SolutionA - horizon is the top layer of the soil horizon, it contains decomposed organic matter which is necessary for plant growth and also microorganisms |
|
| 52. |
All but one are related to surface irrigation? A. Mole drainage B. Natural flooding C. Sprinkler irrigation D. Check flooding Detailed SolutionMole drainage is a subsurface method of draining clay soils that experience regular waterlogging from irrigation or high rainfall |
|
| 53. |
All but one are related to surface irrigation? A. Mole drainage B. Natural flooding C. Sprinkler irrigation D. Check flooding Detailed SolutionMole drainage is a subsurface method of draining clay soils that experience regular waterlogging from irrigation or high rainfall |
|
| 54. |
The most effective method of controlling or preventing viral diseases in plants is by A. practising crop rotation B. spraying crops regularly C. planting resistant varieties D. burning affected crops Detailed SolutionPlanting resistant varieties of a plant/crop is the most effective method of controlling or preventing viral diseases since, the varieties can resist viral infections. |
|
| 55. |
Reduction of ten seedlings of maize to two per stand is referred to as A. Thinning B. Spacing C. Weeding D. Pruning Detailed SolutionThinning is the removal of some or parts of plants, to make room for the growth of others but does not involve the cutting of the whole tree. |
|
| 56. |
The causative organism of maize rust is? A. Nematoda B. Insect C. Bacterium D. Fungus Detailed SolutionMaize rust is caused by a fungus called Puccinia sorghi. |
|
| 57. |
Which of the following fruit is a capsule? A. Okra B. Apple C. Mango D. Coconut Detailed SolutionA capsule is a type of simple, dry, though rarely fleshy dehiscent fruit produced by many species of angiosperms. Only okra in the options is a capsule. |
|
| 58. |
The Head of the tapeworm is known as the A. sucker B. rostellum C. scolex D. hook Detailed SolutionThe head of a tapeworm possesses structures like sucker, rostellum and hook, but the head collectively is referred to as Scolex. |
|
| 59. |
Crops grown primarily for feeding animals are known as A. vegetables B. forage C. cereal D. shrubs Detailed SolutionForage is a food such as grass or hay for horses and cattle [grazing livestock]. |
|
| 60. |
Which of the following is not a sign of heat in animals? A. Mucous discharge from the rectum B. Mucous discharge from the vulva C. Mounting of other animals D. Restlessness Detailed SolutionAll other options except mucous discharge from the rectum which is a sign of sickness are signs of heat in animals. |
| 51. |
In which of the soil layer does most biological activity occur? A. B - horizon B. C - horizon C. D - horizon D. A - horizon Detailed SolutionA - horizon is the top layer of the soil horizon, it contains decomposed organic matter which is necessary for plant growth and also microorganisms |
|
| 52. |
All but one are related to surface irrigation? A. Mole drainage B. Natural flooding C. Sprinkler irrigation D. Check flooding Detailed SolutionMole drainage is a subsurface method of draining clay soils that experience regular waterlogging from irrigation or high rainfall |
|
| 53. |
All but one are related to surface irrigation? A. Mole drainage B. Natural flooding C. Sprinkler irrigation D. Check flooding Detailed SolutionMole drainage is a subsurface method of draining clay soils that experience regular waterlogging from irrigation or high rainfall |
|
| 54. |
The most effective method of controlling or preventing viral diseases in plants is by A. practising crop rotation B. spraying crops regularly C. planting resistant varieties D. burning affected crops Detailed SolutionPlanting resistant varieties of a plant/crop is the most effective method of controlling or preventing viral diseases since, the varieties can resist viral infections. |
|
| 55. |
Reduction of ten seedlings of maize to two per stand is referred to as A. Thinning B. Spacing C. Weeding D. Pruning Detailed SolutionThinning is the removal of some or parts of plants, to make room for the growth of others but does not involve the cutting of the whole tree. |
| 56. |
The causative organism of maize rust is? A. Nematoda B. Insect C. Bacterium D. Fungus Detailed SolutionMaize rust is caused by a fungus called Puccinia sorghi. |
|
| 57. |
Which of the following fruit is a capsule? A. Okra B. Apple C. Mango D. Coconut Detailed SolutionA capsule is a type of simple, dry, though rarely fleshy dehiscent fruit produced by many species of angiosperms. Only okra in the options is a capsule. |
|
| 58. |
The Head of the tapeworm is known as the A. sucker B. rostellum C. scolex D. hook Detailed SolutionThe head of a tapeworm possesses structures like sucker, rostellum and hook, but the head collectively is referred to as Scolex. |
|
| 59. |
Crops grown primarily for feeding animals are known as A. vegetables B. forage C. cereal D. shrubs Detailed SolutionForage is a food such as grass or hay for horses and cattle [grazing livestock]. |
|
| 60. |
Which of the following is not a sign of heat in animals? A. Mucous discharge from the rectum B. Mucous discharge from the vulva C. Mounting of other animals D. Restlessness Detailed SolutionAll other options except mucous discharge from the rectum which is a sign of sickness are signs of heat in animals. |