- Clumps, groups, or aggregation of cockroaches are held together by _______________________
- Each German cockroach capsule contains __________to ___________ eggs
- Three body segments: head, thorax and abdomen
- The lineage of animals with protostome development can next be divided into two groups. What trait distinguishes these two groups?
- What group is the most successful of all the animals, and what characteristics led to this success?
- Three pairs of legs and typically two pairs of wings
- Three body parts (but fusion of parts is common) Head, thorax, abdomen (cephalothorax)
- marine, segmented body with septa separating soma, seta that aids in locomotion
- Mouthparts vary with diet (herbivores, carnivores, scavengers, etc.)Complete digestive system with foregut, midgut and hindgut
- = includes looking for, handling, and actually eating food, can occupy more than 50% of a primates walking hours
- Spatial distribution of their food resources also affects _____ = responsible for much dietary variation
- = park infants in crooks to foragepark their infants and produce higher in fat and protein milk
- Seasonal differences in diet and feeding = reflect primate adjustments to seasonal differences in available foods
- Anterior prosoma contains the major sense organs and brain and bears all the appendagesPosterior opisthosoma contains reproductive organs, respiratory structures, etc.
- Polychaetes are dioecious with external fertilization and indirect development (larval stage)Earthworms and leeches are simultaneous hermaphrodites with internal fertilization
- Active polychaetes have leg-like parapodia which are used to crawlSedentary polychaetes often live within a secreted tube (protein/CaCO3)Earthworms use circular/longitudinal muscles to push through the soil with peristaltic movementLeeches may use musculature and suction cups
- Brain and sensory organs located primarily at the anterior/posterior ends, Tentacles, ocelli, chemoreceptors
- Hearing—tympanum/lyriform organs/sensory hairsChemical—antennae, etc.Touch—sensory hairs
- Snails, slugs, etc. glide along on their muscular foot, aided by lubricating mucous
- May be active carnivores/scavengers, ectoparasites or sedentary filter feedersComplete digestive system with specialized organs (crop, gizzard, stomach, etc.)