Multiple Choice Answers

Question 1
The sporophyte generation:
A. is diploid.
B. is haploid.
C. is not found in ferns.
D. produces sex cells.

Question 2
In the mosses, archegonia produce:
A. eggs.
B. zygotes.
C. diploid cells.
D. sperm.

Question 3
Specialized outgrowths of roots that increase the efficiency of absorbing water from the soil are called:
A. root hairs.
B. nodules.
C. xylem.
D. phloem.

Question 4
Ferns are not limited to wet areas due to the development of:
A. flowers.
B. leaves.
C. roots.
D. vascular tissue.

Question 5
Gymnosperms:
A. are usually insect pollinated.
B. are found above the timberline on mountains.
C. are seed-bearing plants.
D. have flowers.

Question 6
Unprotected seeds are found in:
A. cones.
B. perfect flowers.
C. imperfect flowers.
D. fruit.

Question 7
Angiosperms differ from most other plants in that they:
A. lack chlorophyll.
B. are beneficial to people.
C. produce spores abundantly.
D. have flowers.

Question 8
A perfect flower is one that has:
A. five petals, five sepals, and five stamens.
B. exactly duplicated petals.
C. only pistils.
D. pistils and stamens.

Question 9
Plants that do not shed all of their leaves at one time are:
A. angiosperms.
B. flowering.
C. nondeciduous.
D. deciduous.

Question 10
The diameter of a tree increases due to new growth in the:
A. bark.
B. xylem.
C. cambium.
D. All of these answers are true.

Question 11
Poikilotherms:
A. have the same body temperature as their environment.
B. maintain a cold body temperature.
C. maintain a constant body temperature.
D. are always unicellular organisms.

Question 12
Animals with no particular body shape have:
A. asymmetry.
B. radial symmetry.
C. bilateral symmetry.
D. coeloms.

Question 13
Animals that can only be divided into mirror halves along one plane have:
A. asymmetry.
B. radial symmetry.
C. bilateral symmetry.
D. acoeloms.

Question 14
In animals constructed of a tube within a tube, the open space between the two tubes is the:
A. digestive system.
B. respiratory system.
C. coelom.
D. muscles.

Question 15
A specific type of reproduction in which a new organism is an outgrowth of the parent is:
A. budding.
B. fragmentation.
C. cloning.
D. sexual.

Question 16
A free-swimming adult stage that reproduces sexually is a:
A. larva.
B. polyp.
C. medusa.
D. zygote.

Question 17
The most harmful parasite for plants and animals is the:
A. roundworm.
B. protozoan.
C. fungus.
D. flatworm.

Question 18
Benthic organisms are found:
A. on the ocean surface.
B. free-swimming anywhere in the ocean.
C. on the ocean bottom.
D. along the ocean shore.

Question 19
The development of a shelled egg allowed __________ to become completely adapted to land.
A. mammals
B. insects
C. reptiles
D. amphibians

Question 20
Marsupial animals complete development in:
A. a placenta.
B. water.
C. an egg.
D. a pouch.