E. Answer the following questions.
1. Name the organ that helps the fish to swim?
2. How do the insects fly?
3. Give two examples of reptiles.
4. How do the mammals move?
5. How does the antennae help the insect?
6. How do the amphibians lay their eggs n
Brain Sharpening Questions
Answers
Answer1:Most fish have an organ called the swim bladder. It is a flexible, gas-filled sac located in the dorsal or top portion of the body cavity and helps to control the fish's buoyancy.
Answer2:Many insects can hover, or stay in one spot in the air, doing so by beating their wings rapidly. ... As the wings push down on the surrounding air, the result reaction force of the air on the wings force the insect up. The wings of most insects are evolved so that, during the upward stroke, the force on the wing is small.
Answer3:The major groups of living reptiles—the turtles (order Testudines), tuatara (order Rhynchocephalia [Sphenodontida]), lizards and snakes (order Squamata), and crocodiles (order Crocodylia, or Crocodilia)—account for over 8,700 species.
Answer4:They live on land, in the open ocean, and underground. With more than 5,400 species, mammals move in all kinds of ways. They walk, hop, gallop, and swing from trees. They swim, dive, glide, and even fly!
Answer5:Antennae (singular: antenna), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. ... Antennae can also locate other group members if the insect lives in a group, like the ant.
Answer6:Most amphibians live part of their lives underwater and part on land. Amphibians reproduce by laying eggs that do not have a soft skin, not a hard shell. Most females lay eggs in the water and the babies, called larvae or tadpoles, live in the water, using gills to breathe and finding food as fish do.
Answer:
1. A hollow, gas-filled balance organ that allows a fish to conserve energy by maintaining neutral buoyancy (suspending) in water.
2. Insects are the only group of invertebrates that have evolved wings and flight. Insects first flew in the Carboniferous, some 350 million years ago. Wings may have evolved from appendages on the sides of existing limbs, which already had nerves, joints, and muscles used for other purposes. These may initially have been used for sailing on water, or to slow the rate of descent when gliding.
3.turtles, crocodilians, snakes, amphisbaenians, lizards.
4. They live on land, in the open ocean, and underground. With more than 5,400 species, mammals move in all kinds of ways. They walk, hop, gallop, and swing from trees. They swim, dive, glide, and even fly
5.Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments. While they are typically sensory organs, the exact nature of what they sense and how they sense it is not the same in all groups. Functions may variously include sensing touch, air motion, heat, vibration (sound), and especially smell or taste.[1][2] Antennae are sometimes modified for other purposes, such as mating, brooding, swimming, and even anchoring the arthropod to a substrate.[2] Larval arthropods have antennae that differ from those of the adult. Many crustaceans, for example, have free-swimming larvae that use their antennae for swimming. Antennae can also locate other group members if the insect lives in a group, like the ant. The common ancestor of all arthropods likely had one pair of uniramous (unbranched) antenna-like structures, followed by one or more pairs of biramous (having two major branches) leg-like structures, as seen in some modern crustaceans and fossil trilobites.[3] Except for the chelicerates and proturans, which have none, all non-crustacean arthropods have a single pair of antennae.
6. Most amphibians live part of their lives underwater and part on land. Amphibians reproduce by laying eggs that do not have a soft skin, not a hard shell. Most females lay eggs in the water and the babies, called larvae or tadpoles, live in the water, using gills to breathe and finding food as fish do.