Podcast
Questions and Answers
What type of symmetry is found in many sponges, which lack a distinct head or body regions?
What type of symmetry is found in many sponges, which lack a distinct head or body regions?
- Asymmetric (correct)
- Radial symmetry
- Bilateral symmetry
- Spherical symmetry
Which of the following is a key feature associated with bilateral symmetry in animals?
Which of the following is a key feature associated with bilateral symmetry in animals?
- Radiation of body parts out from a single point
- Arrangement of body parts around a single main axis
- Lack of a fluid-filled body cavity
- Concentration of sensory organs and nerve tissues at the anterior end (correct)
Which type of animal body cavity is characterized by a space between the gut and body wall filled with cells called mesenchyme?
Which type of animal body cavity is characterized by a space between the gut and body wall filled with cells called mesenchyme?
- Pseudocoelom
- Coelom
- Acoelomate (correct)
- Endocoel
What is the evolutionary advantage of cephalization, the concentration of sensory organs and nerve tissues at the anterior end?
What is the evolutionary advantage of cephalization, the concentration of sensory organs and nerve tissues at the anterior end?
Which type of symmetry is found in ctenophores and cnidarians, where the body parts are arranged around a single main axis?
Which type of symmetry is found in ctenophores and cnidarians, where the body parts are arranged around a single main axis?
Which of the following is a key feature of the most evolutionarily advanced animal body plans?
Which of the following is a key feature of the most evolutionarily advanced animal body plans?
Which of the following is a characteristic of a diploblastic animal?
Which of the following is a characteristic of a diploblastic animal?
What is the defining characteristic of a protostome animal?
What is the defining characteristic of a protostome animal?
How do the early developmental patterns of sea urchins and lophotrochozoans differ?
How do the early developmental patterns of sea urchins and lophotrochozoans differ?
What is the relationship between the blastopore and the mouth in deuterostome animals?
What is the relationship between the blastopore and the mouth in deuterostome animals?
Which of the following is a characteristic of the body plan of triploblastic animals?
Which of the following is a characteristic of the body plan of triploblastic animals?
How do the early developmental patterns of reptiles and sea urchins differ?
How do the early developmental patterns of reptiles and sea urchins differ?
What is the main difference between a pseudocoelomate and a coelomate body plan?
What is the main difference between a pseudocoelomate and a coelomate body plan?
How do body cavities act as hydrostatic skeletons in some animals?
How do body cavities act as hydrostatic skeletons in some animals?
What feature allows animals to precisely control their movements and alter body shape?
What feature allows animals to precisely control their movements and alter body shape?
In the evolution of animal body plans, what does segmentation primarily facilitate?
In the evolution of animal body plans, what does segmentation primarily facilitate?
Which type of animals typically have jointed limbs specialized for controlled movements?
Which type of animals typically have jointed limbs specialized for controlled movements?
