1 Differentiate between vertebrates and invertebrates.
2. How does a shell help a snail?
3. What are the roles of fins and the tail in a fish?
Answers
Explanation:
1.VERTEBRATES - the organisms which have their back bone are called as vertebrates.
Ex:- Humans, Giraffe , lion, etc.
INVERTEBRATES- the organisms which do not have their back bone is called invertebrates.
Ex:- Cockroaches, Earthworm, Bacteria, etc.
2. A shell protects a snail from its predators. Snail’s shell is even called their home for living. Whenever snail feels danger near itself it goes into the shell.
3. Fins and tail of a fish helps a fish to escape from its predators by going fast in water and also fins and tail helps to change direction in water
Answer:
- Differentiate
Invertebrates
1. Invertebrates, like insects and flatworms, do not have a backbone or a spinal column.
2. Small and slow moving.
Vertebrates
1. Vertebrates have a well-developed internal skeleton of cartilage and bone and a highly developed brain that is enclosed by a skull. Examples of vertebrates include humans, birds, and snakes.
2. Big in size.
- For snails ,shell is an essential protection against the sun, and against drying out , and is typically made of calcium carbonate precipitated out into an organic matrix. It is secreted by a part of the molluscan body known as the mantle.
- roles of fins and the tail in a fish
Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping.