Advertisements
Advertisements
Question
What is difference between bilateral symmetry and radial symmetry?
Advertisements
Solution
| Bilateral Symmetry | Radial Symmetry |
| 1. Limbs and organs are paired. |
1.Limbs and organs occur all around the central axis. |
| 2. Cephalization is present. | 2. Cephalization is absent. |
| 3. The animals body can be divided into two equal halves (i.e., mirror images) by one plane called midsagittal plane. | 3. The animal’s body can be divided into two equal halves by any vertical plane passing through the central axis. |
| Examples. Earthworm, fish, frog, human, being, etc. | Examples. Hydra, starfish, etc. |
APPEARS IN
RELATED QUESTIONS
How do poriferan animals differ from coelenterate animals?
What are the differences between amphibians and reptiles?
What are the differences between animals belonging to the Aves group and those in the mammalia group?
Write one difference between the following pair:
Invertebrates and Vertebrates
Match the animals given under column A with their respective classification group given under column B
| Column A | Column B | ||
| 1 | Sponge | a | Amphibia |
| 2 | Snail | b | Reptilia |
| 3 | Butterfly | c | Echinodermata |
| 4 | Toad | d | Mollusca |
| 5 | Lizard | e | Arthropoda |
| 6 | Starfish | f | Porifera |
Write down four main characters of Annelida.
Define the term hermaphrodite.
Give four general characters of phylum Mollusca.
What are adaptations in fishes due to which they are aquatic?
Write down four main characters of chordates.
Write down four general characters of cnidarians (coelenterates).
Write the name of a mammal who lives in water.
Give two examples of each of the following: Arthropoda
Fill in the blanks:
The excretory organs of platyhelminthes are ______.
Fill in the blanks:
Bath sponge belongs to phylum ______.
Choose the correct answer: Multicellular producers are
______ in 1623, introduced the binomial nomenclature.
Assertion: Binomial name is the universal name and contains two names.
Reason: It was first introduced by Carolus Linnaeus
Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.
Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults.
In the light of the above statements, choose the correct answer from the options given below:
