What are the three germ layers produced during gastrulation?
What will be an ideal response?
endoderm, mesoderm, ectoderm
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If a cell is dividing by binary fission then you know that:a
mitosis has taken place without cytokinesis. b. homologous chromosomes have already paired. c. the cyclin-Cdk complex is no longer phosphorylating enzymes. d. the cell cycle is out of control. e. the cell is prokaryotic
Specialized symbiotic associations between the roots of plants and fungi are called
A. lichens. B. hyphal associations. C. heterokaryotic junctions. D. mycorrhizae. E. a mycelial unit.
Can the energy released as heat during respiration be recaptured and used to do additional work?
a. Yes b. No
In the life cycle of the brown alga Laminaria, which stage represents the young sporophyte?
1.A
2.B
3.C
4.D
5.E