BIOL112 SI- Session 24- Exam 3 Review (Ch. 25, 26, 28)

Which is the ancestor to land plants?

• fungus

• green algae

• sponge

• red algae

Which part of seed plants develops into the seed?

• megaspore

• pollen grain

• ovule

• sporopollenin

Which of the gymnosperms does not have motile sperms?

• conifer

• cycad

• ginkgo

• gnetophytes

Which gymnosperms has fern-like fronds that protrude out from a central stem?

• conifers

• cycads

• ginkgo

• gnetophytes

Which is not true of male gametophytes in seed plants?

• They release pollen grains.

• They do not depend on water to reach the female gametophyte.

• They develop into the endosperm to support embryo growth.

• They are protected from dessication.

The male gametophyte in an angiosperm develops into the ____.

• macrospore

• stamen

• microspore

• carpel

Which is not true of Hox genes?

• They are not highly conserved.

• They encode transcriptional factors.

• They determine development.

• The genes they encode for are expressed in certain body segments at certain stages.

Coelom cannot form in triploblastic animals since there is no ectoderm.

• True

• False

Sponges are ____ to all other animals.

• basal taxa

• sister taxa

• ancestral

• unrelated

The spongin develops from the ____, and the spicule from the ____.

• amoebocyte, pinacocyte

• spongocyte, sclerocyte

• iophocyte, collenocyte

• oocyte, choanocyte