Inv. in the News
Studied by 0 people
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/3
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
4 Terms
What is the latest news on Ancestral First Animals?
Recent genomic and chromosomal linkage analyses support sponges (Porifera), not comb jellies (Ctenophora), as the earliest-branching animals, suggesting that nervous systems and muscles evolved after sponges rather than being lost secondarily.
How do ants (and hymenopterans) determine sex of their offspring?
Through haplodiploidy: unfertilized eggs develop into haploid males and fertilized eggs develop into diploid females; recent studies show rare exceptions such as androgenesis and cross-species cloning in some ants.
What became of tube feet in the brittle stars?
Tube feet were secondarily lost in brittle stars; they are an echinoderm synapomorphy that was present in the ancestor but later reduced or eliminated.
Give one example of insects using electro-detection.
Bumblebees can detect floral electric fields, which change after other pollinators visit and help bees identify rewarding flowers.
Note 
Flashcards (42)