What do all animals have in common?

1
What do all animals have in common?

1. They eat plants or other animals.
2. They are multicellular.
3. They reproduce sexually.
4. They move around.
5. They sense and respond to their environment.

2
What do all animals have in common?

1. They eat plants or other animals.
2. They are multicellular.
3. They reproduce sexually.
4. They move around.
5. They sense and respond to their environment.

3
Although morphological and molecular phylogenies
of animal phyla are similar in many respects,
there are differences between them. Morphological
and molecular phylogenies agree on all of the
following except

1. Segmentation evolved independently in separate
   lineages.
2. Tissue was one of the earliest morphological
   traits to evolve.
3. Animals generally evolved from simpler to more
   complex.
4. Radial symmetry in adults evolved relatively
   late.
5. Pseudocoelom evolved independently in separate
   lineages.

4
Although morphological and molecular phylogenies
of animal phyla are similar in many respects,
there are differences between them. Morphological
and molecular phylogenies agree on all of the
following except

1. Segmentation evolved independently in separate
   lineages.
2. Tissue was one of the earliest morphological
   traits to evolve.
3. Animals generally evolved from simpler to more
   complex.
4. Radial symmetry in adults evolved relatively
   late.
5. Pseudocoelom evolved independently in separate
   lineages.

5
Which feature would be most useful for an aquatic
animal switching to living in a terrestrial
habitat?

1. the ability to metamorphose
2. the ability to lay eggs
3. the ability to reproduce asexually
4. a segmented body
5. an exoskeleton or shell

6
Which feature would be most useful for an aquatic
animal switching to living in a terrestrial
habitat?

1. the ability to metamorphose
2. the ability to lay eggs
3. the ability to reproduce asexually
4. a segmented body
5. an exoskeleton or shell

7
Barnacles are sessile crustaceans that live in
intertidal areas. Because they cement themselves
to their substrates, they cant get up and move
to find mates. How do you think they reproduce?

1. by releasing eggs and sperm into the water during
   high tides
2. asexually
3. with very long penises

8
Barnacles are sessile crustaceans that live in
intertidal areas. Because they cement themselves
to their substrates, they cant get up and move
to find mates. How do you think they reproduce?

1. by releasing eggs and sperm into the water during
   high tides
2. asexually
3. with very long penises (see next slide)

9
http//www.science.uva.nl/ibed/research/Research_F
ields/eb/activitieseb/information/barnacle_mating.
jpg