Reproduction - Jamb Biology Past Questions and Answers

Question 11:

• JAMB 1979

Which of these statement below is not a characteristic of wind pollinated flower?

A. Stigmas are usually large and feathery
B. Nectar is usually absent
C. The pollen grains have rough spiny surfaces
D. The flowers are not scented
E. The pollen is light and smooth

Question 12:

• JAMB 1979

Identical twins are produced under one of the following conditions

A. Two oval fertilized at the same time by two sperm
B. One ovum ferilized divides to give two embryos
C. One ovum fertilized, twins formed shortly before birth
D. Two ova fertilized by one sperm
E. One ovum fertilized by two sperm

Question 13:

• JAMB 1981

Which of the following is NOT true of wind-pollinated flowers?

A. A large amount of pollen produced
B. Light smooth pollen grains
C. Small inconspicuous flowers
D. Scented petals
E. Large pendulous anther

Question 14:

• JAMB 1981

Spirogyra reproduces vegetatively by

A. Spore production
B. Fragmentation
C. Multiple fission
D. Budding
E. Binary fission

Question 15:

• JAMB 1981

Which of the structure becomes the seed coat after fertilization?

A. 1
B. 2
C. 3
D. 4
E. 5