SAT Plant Structure and Function 5

Question 1

In angiosperms, double fertilization produces:

Accepted Answer

A zygote and triploid endosperm

Answer

One sperm fertilizes the egg and the other fuses with two polar nuclei, forming 3n endosperm.

Question 2

Which part of the flower develops into the fruit?

Accepted Answer

Ovary

Answer

The ovary wall matures into the fruit surrounding the seeds.

Question 3

Monocot seeds differ from dicot seeds in having:

Accepted Answer

One cotyledon

Answer

Monocots have a single cotyledon, parallel leaf veins, and scattered vascular bundles.

Question 4

Which structure in a flower produces the male gametophyte (pollen)?

Accepted Answer

Anther

Answer

Microspores develop within the anther into pollen grains.

Question 5

In the plant life cycle, the dominant generation in flowering plants is the:

Accepted Answer

Diploid sporophyte

Answer

Angiosperm sporophytes are large and conspicuous, while gametophytes are microscopic.

SAT - Biology Subject Test Practice Test