Question
Write down four main characters of chordates.
✓
Answer
- Body is bilaterally symmertical, metamerically segmented, triploblastic and coelomate.
- A post-anal tail present at some stage of life.
- Segmental muscles in an unsegmented trunk.
- Ventral heart, with dorsal and ventral blood vessels and closed blood vascular system.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A boy tries to push a truck parked on the roadside.The truck does not move at all. Another boy pushes a bicycle moves through a certain distance. In which case was the work done more: on the truck or on the bicycle? Give a reason to support your answer.
Why are road accidents at high speeds very much worse than road accidents at low speeds?
An object of mass 15 kg is moving with a uniform velocity of 4 $m s ^{-1}$. What is the kinetic energy possessed by the object?
→How are chromatin, chromatid and chromosomes related to each other?
Define valency of an element. What valency will be shown by an element having atomic number 14?
What will happen in a cell if its nucleus is removed? Give reasons in support of your answer.
What is the significance of the formula of a substance?
Composition of the nuclei of two atomic species A and B is given as under:
Give the mass numbers of A and B. What is the relation between the two species and which element or elements they represent?
| | A | B |
| Protons | 18 | 20 |
| Neutrons | 22 | 20 |
Water hyacinth float on water surface. Explain.
Where do the lipids and proteins constituting the cell membrane get synthesised?