Bio 112 - Exam 4 comprehensive
Questions and Answers with Verified
Solutions
Question 1:
What are animals classified as?
Answer:
Multicellular, eukaryotic, heterotrophic organisms.
Question 2:
What kingdom do animals belong to?
Answer:
Kingdom Animalia
Question 3:
What is a defining characteristic of animal nutrition?
Answer:
They ingest food rather than absorbing it.
Question 4:
What molecules provide structural support in animals since they lack cell
walls?
Answer:
Collagen and other structural proteins.
,Question 5:
Do animals have cell walls? No
Answer:
Question 6:
What two specialized tissues are unique to animals?
Answer:
Nervous tissue and muscle tissue.
Question 7:
How do animals typically reproduce?
Answer:
Sexually, with diploid-dominant life cycles.
Question 8:
What is the dominant stage in the animal life cycle?
Answer:
Diploid (2n) stage.
Question 9:
What is a zygote?
Answer:
A fertilized egg (first cell of a new animal).
, Question 10:
What is cleavage?
Answer:
Rapid mitotic cell divisions without growth between divisions.
Question 11:
What is a blastula?
Answer:
A hollow ball of cells formed during early development.
Question 12:
What is gastrulation?
Answer:
The process where the embryo folds inward to form tissue layers.
Question 13:
What does gastrulation form?
Answer:
Embryonic germ layers: ectoderm, endoderm, mesoderm.
Question 14:
What is the archenteron?
Answer:
Primitive digestive tube formed during gastrulation.
Questions and Answers with Verified
Solutions
Question 1:
What are animals classified as?
Answer:
Multicellular, eukaryotic, heterotrophic organisms.
Question 2:
What kingdom do animals belong to?
Answer:
Kingdom Animalia
Question 3:
What is a defining characteristic of animal nutrition?
Answer:
They ingest food rather than absorbing it.
Question 4:
What molecules provide structural support in animals since they lack cell
walls?
Answer:
Collagen and other structural proteins.
,Question 5:
Do animals have cell walls? No
Answer:
Question 6:
What two specialized tissues are unique to animals?
Answer:
Nervous tissue and muscle tissue.
Question 7:
How do animals typically reproduce?
Answer:
Sexually, with diploid-dominant life cycles.
Question 8:
What is the dominant stage in the animal life cycle?
Answer:
Diploid (2n) stage.
Question 9:
What is a zygote?
Answer:
A fertilized egg (first cell of a new animal).
, Question 10:
What is cleavage?
Answer:
Rapid mitotic cell divisions without growth between divisions.
Question 11:
What is a blastula?
Answer:
A hollow ball of cells formed during early development.
Question 12:
What is gastrulation?
Answer:
The process where the embryo folds inward to form tissue layers.
Question 13:
What does gastrulation form?
Answer:
Embryonic germ layers: ectoderm, endoderm, mesoderm.
Question 14:
What is the archenteron?
Answer:
Primitive digestive tube formed during gastrulation.
