A comprehensive list of Agricultural science questions with answers to help you prepare for JAMB, WAEC, NECO, Post UTME exams.

A.

10:10:10

B.

20:10:10

C.

10:10:20

D.

20:20:10

Correct answer is **B**

For the cultivation of yam and cassava, the recommended NPK fertilizer ratio is 20:10:10. This means the fertilizer contains a higher percentage of nitrogen (N) compared to phosphorus (P) and potassium (K). Nitrogen is essential for promoting vegetative growth and leaf development, which is important for yam and cassava during their early stages of growth.

Assuming a sow was serviced on May 1 and conceived the same day, the expected date of parturition is

A.

June 2

B.

September 30

C.

August 24

D.

October 2

Correct answer is **B**

The gestation period for a sow (female pig) is approximately 3 months, 3 weeks, and 3 days, which is equivalent to about 114 days.

If the sow was serviced (mated) on May 1, we can calculate the expected date of parturition (giving birth) as follows:

Count 3 months from May 1: May + 3 months = August 1

Count 3 weeks from August 1: August 1 + 3 weeks = August 22

Count 3 more days from August 22: August 22 + 3 days = August 25

So, based on the gestation period, the expected date of parturition is around August 25. However, since not all months have the same number of days, we need to adjust for the extra days to reach the actual parturition date.

Counting from August 25 to September 30, there are 36 days (25 days in August and 5 days in September). Adding these 36 days to August 25:

August 25 + 36 days = September 30

Therefore, the expected date of parturition is September 30.

In a poultry farm, 2,000 birds were laying an average of 1,680 eggs per day. Use this information to answer the question

If an egg tray contains 30 eggs, how many trays of eggs will be collected in one week?

A.

240

B.

526

C.

286

D.

392

Correct answer is **D**

Total number of birds = 2,000

Number of eggs laid per day = 1,680

Number of eggs laid in 7days = 1,680 x 7 =11760

Number of eggs in one tray = 30

x =11760/30

=392 trays

In a poultry farm, 2,000 birds were laying an average of 1,680 eggs per day. Use this information to answer the question

What is the percentage of birds that did not lay eggs?

A.

16%

B.

84%

C.

19%

D.

46%

Correct answer is **A**

Number of birds that did not lay eggs = Total number of birds - Number of eggs laid

Given information:

Total number of birds = 2,000

Number of eggs laid = 1,680 per day

Number of birds that did not lay eggs = 2,000 - 1,680 = 320

Now, we can calculate the percentage of birds that did not lay eggs:

Percentage of birds that did not lay eggs = (Number of birds that did not lay eggs / Total number of birds) x 100

Percentage of birds that did not lay eggs = (320 / 2,000) x 100 = 0.16 x 100 = 16%

Therefore, the percentage of birds that did not lay eggs on that particular day is 16%.

Which of the following crops require a nursery?

A.

Rubber

B.

Cotton seed

C.

Yam

D.

Soya bean

Correct answer is **A**

Among the given options, 'Rubber' is the crop that requires a nursery. A nursery is a place where plants are propagated and grown to a desired age. Rubber seeds are usually sown in a nursery and the seedlings are transplanted to the field when they are about 6 months old.