Author Question: Which of these, if true, would support the claim that the ancestral cnidarians h (Read 723 times)

hummingbird

  • Sr. Member
  • ****
  • Posts: 324
Which of these, if true, would support the claim that the ancestral cnidarians had bilateral symmetry?
1.    Cnidarian larvae possess anterior-posterior, left-right, and dorsal-ventral aspects.
2.    Cnidarians have fewer Hox genes than bilaterians.
3.    All extant cnidarians, including Nematostella, are diploblastic.
4.    β-catenin turns out to be essential for gastrulation in all animals in which it occurs.
5.    All cnidarians are acoelomate.
A) 1 only
B) 1 and 4
C) 2 and 3
D) 2 and 4
E) 4 and 5



geoffrey

  • Hero Member
  • *****
  • Posts: 880

Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

hummingbird

  • Sr. Member
  • ****
  • Posts: 324

 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

For a complete list of videos, visit our video library