Year :
1986
Title :
Biology
Exam :
JAMB Exam
Paper 1 | Objectives
31 - 40 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
In the mammalian skin, melanin and keratin are contained in the A. sebaceous gland B. sweat gland C. subcubaneous layer D. malpighian layer |
D |
| 32. |
Two main distinguishing features of the cervical vertebra are the presence of A. short neural spine and vertebraterial canal B. prozygapophysis and cervical ribs C. large centrum and cervical ribs D. vertebraterial canal and large centrum |
A |
| 33. |
Nastic movement is A. response to light stimulus B. non-directional C. directional D. response to internal stimulus Detailed SolutionNastic movements are non-directional responses to stimuli (e.g. temperature, humidity, light irradiance), and are usually associated with plants. The movement can be due to changes in turgor or changes in growth. |
|
| 34. |
Gestation in mammals is the period A. required for growth after birth B. between the formation of the foetus and birth C. of development from zygote to birth D. before the formation of the zygote |
B |
| 35. |
If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal? A. Three B. Two C. One D. None |
D |
| 36. |
Which of the following is an example of discontinuous variation? A. skin colouration B. left handedness C. body weight D. Height |
B |
| 37. |
The hormones which regulates the amount of glucose in the blood is called A. adrenalin B. auxin C. insulin D. thyroxine |
C |
| 38. |
An instrument that can be used to demonstrate phototropism and geotropism in plants is the A. auxanometer B. potometer C. klinostat D. photometer |
C |
| 39. |
In an ecosystem, animals which feed directly on plants are called A. secondary consumers B. primary consumers C. producers D. predators |
B |
| 40. |
In an agricultural ecosystem, the biotic component consists of A. crop, pest and beneficial insects B. crops, temperature and humidity C. pests, beneficial insects and water D. crops, water and soil |
A |
| 31. |
In the mammalian skin, melanin and keratin are contained in the A. sebaceous gland B. sweat gland C. subcubaneous layer D. malpighian layer |
D |
| 32. |
Two main distinguishing features of the cervical vertebra are the presence of A. short neural spine and vertebraterial canal B. prozygapophysis and cervical ribs C. large centrum and cervical ribs D. vertebraterial canal and large centrum |
A |
| 33. |
Nastic movement is A. response to light stimulus B. non-directional C. directional D. response to internal stimulus Detailed SolutionNastic movements are non-directional responses to stimuli (e.g. temperature, humidity, light irradiance), and are usually associated with plants. The movement can be due to changes in turgor or changes in growth. |
|
| 34. |
Gestation in mammals is the period A. required for growth after birth B. between the formation of the foetus and birth C. of development from zygote to birth D. before the formation of the zygote |
B |
| 35. |
If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal? A. Three B. Two C. One D. None |
D |
| 36. |
Which of the following is an example of discontinuous variation? A. skin colouration B. left handedness C. body weight D. Height |
B |
| 37. |
The hormones which regulates the amount of glucose in the blood is called A. adrenalin B. auxin C. insulin D. thyroxine |
C |
| 38. |
An instrument that can be used to demonstrate phototropism and geotropism in plants is the A. auxanometer B. potometer C. klinostat D. photometer |
C |
| 39. |
In an ecosystem, animals which feed directly on plants are called A. secondary consumers B. primary consumers C. producers D. predators |
B |
| 40. |
In an agricultural ecosystem, the biotic component consists of A. crop, pest and beneficial insects B. crops, temperature and humidity C. pests, beneficial insects and water D. crops, water and soil |
A |