Question

6.
What is Aristotle's lantern? Give its function.
7.
Differentiate between direct and indirect development.
8.
What are the unique features of the phylum Annelida?
9.
What are the differences between butterflies and moths?
10. Describe the canal system of sponges.​

Answer 1

Explanation:

1. Aristotle's lantern, which also may be venomous. The teeth of Aristotle's lantern are typically extruded to scrape algae and other food from rocks, and some urchins can excavate hiding places in coral or rock—even in steel.
2. It is a type of development in which an embryo develops into a mature individual without involving a larval stage. 1. It is a type of development that involves a sexually-immature larval stage, having different food requirements than adults.
3. Butterfly antennae are thin with club-shaped tips, compared with the feathery or comb-like antennae of moths. Moths are stout and fuzzy; butterflies are slender and smooth. And wing colorations between the insect types are generally polar opposites, with butterflies sporting more vibrant colors.
4. CANAL SYSTEM IN SPONGES. Body of all sponges is the perforated by large number of apertures through which water enters Inside body and flows through a system of criss-crossing canals collectively forming the canal system which is a characteristic feature of poriferans.

Answer 2

Answer:

6.sea urchins a complex dental apparatus called Aristotle's lantern, which also may be venomous. The teeth of Aristotle's lantern are typically extruded to scrape algae and other food from rocks, and some urchins can excavate hiding places in coral or rock—even in steel.

7.Direct development Indirect development

In this type of development, embryo develops into a mature individual without involving a larval stage.

It this type of development, sexually-immature larval stage is present.

Metamorphosis is absent.

Metamorphosis is present. It involves development of larva to an adult.

It is seen in fishes, reptiles, birds, mammals.

It is seen in invertebrates and amphibians.

8.Symmetry and Size. Annelids are all bilaterally symmetrical animals. ...

Coelom. ...

Body wall. ...

Parapodia. ...

Nervous system. ...

Sense organs. ...

Circulation and respiratory structures. ...

Segmental organs.

9.Moths and butterflies both belong to the order Lepidoptera, but there are numerous physical and behavioral differences between the two insect types.

On the behavioral side, moths are nocturnal and butterflies are diurnal (active during the day). While at rest, butterflies usually fold their wings back, while moths flatten their wings against their bodies or spread them out in a "jet plane" position.

Their pupal stage (between the larva and adult stages) is slightly different, too. Here, moths make cocoons that are wrapped in silk coverings. Butterflies, on the other hand, form chrysalises, which are hard, smooth and silkless.

Physical differences abound. Butterfly antennae are thin with club-shaped tips, compared with the feathery or comb-like antennae of moths. Moths are stout and fuzzy; butterflies are slender and smooth.

And wing colorations between the insect types are generally polar opposites, with butterflies sporting more vibrant colors. Additionally, moth wings, unlike butterfly wings, have a structure called a frenulum, which joins the forewing to the hind wing.

Though these various traits usually distinguish a butterfly from a moth, there are numerous exceptions to these rules. The Madagascan sunset moth, for example, is brightly colored and active during the day.

10.Body of all sponges is the perforated by large number of apertures through which water enters Inside body and flows through a system of criss-crossing canals collectively forming the canal system which is a characteristic feature of poriferans.