CLEP Biology Plant Reproduction and Structure 5

Question 1

Which of the following is an adaptation that helps plants avoid self-pollination?

Accepted Answer

Dichogamy (maturation of anthers and stigmas at different times)

Answer

Dichogamy ensures that pollen is released before or after the stigma of the same flower is receptive, preventing self-fertilization.

Question 2

The transfer of pollen from the anther of one flower to the stigma of a flower on a different plant is called:

Accepted Answer

Cross-pollination

Answer

Cross-pollination (allogamy) involves pollen transfer between different individuals, increasing genetic diversity in the offspring.

Question 3

Cleistogamous flowers are unusual because they:

Accepted Answer

Never open and self-fertilize within the bud

Answer

Cleistogamous flowers remain permanently closed and self-fertilize within the bud, guaranteeing seed production without pollinators.

Question 4

Which of the following correctly pairs a fruit type with its means of dispersal?

Accepted Answer

Maple samara — wind dispersal

Answer

Maple samaras have wing-like extensions (papery outgrowths) that allow them to spin and be carried by wind away from the parent tree.

Question 5

Cork (bark) in woody plants is produced by which meristem?

Accepted Answer

Cork cambium (phellogen)

Answer

The cork cambium (phellogen) is the lateral meristem that produces cork cells (phellem) outward, forming the protective bark of woody plants.

CLEP Practice Test