An obsolete taxon, the ʺRadiata,ʺ included all phyla whose adults had true radial symmetry. Today, the ʺRadiataʺ is more correctly considered to be

1. a clade.

2. a grade.

3. monophyletic.

4. paraphyletic.

5. polyphyletic.

TLS Online TPP Program

#Question id: 11058

#Section 2: Evolution

The pufferfish, a common marine fish, has extensive spines that extend outward when it swallows water, becoming several times its normal size. This is an example of what kind of defense against predation?

TLS Online TPP Program

#Question id: 10858

#Section 1: Ecology

Which of the following is an example of obligatory symbiotic mutualism?

TLS Online TPP Program

#Question id: 9276

#Section 5: Applied Ecology & Evolution

The carotenoid b-carotene, whose structure and absorption spectrum at,

TLS Online TPP Program

#Question id: 9277

#Section 5: Applied Ecology & Evolution

The light energy absorbed by the carotenoids is transferred to chlorophyll for photosynthesis; because of this role they are called

TLS Online TPP Program

#Question id: 10841

#Section 2: Evolution

An animal that is cryptically coloured probably