Week 6: Lecture 3: Animal Diversity In Invertebrates: Sponges

Question 1

Body plan

Answer 1

Characteristics which are related with reflecting phylogenetic history of all animals.
(And separate big groups of animals)

Question 2

Three types of body symmetry

Answer 2

Asymmetric
Radial
Bilateral

Question 3

Which type of body symmetry do most primitive animals have?

Answer 3

Asymmetric

Question 4

More modern animals have which symmetry

Answer 4

Bilateral symmetry

Question 5

Three types of animals with body cavities

Answer 5

Coelomates
Pseudocoelomates
Acoelomates

Question 6

Two types of development in animals

Answer 6

Protosomes

Deuterosomes

Question 7

Most primitive phylum

Answer 7

Phylum Porifera

Question 8

Phylum Porifera

Answer 8

Sponges

‘Pore bearing’

Question 9

Phylum Porifera/sponges

Reproduction

Answer 9

Sexual reproduction

All organisms are hermaphrodites and tend to autofertilise

Question 10

Hermaprodites

Answer 10

Each individual is male and female

Question 11

Sessile

Answer 11

Don’t move as adults

Question 12

Phylum Porifera/ sponges

Movement

Answer 12

Sessile but free swimming larvae

Question 13

Phylum Porifera/ sponges

Symmetry

Answer 13

Asymmetric but some with radial symmetry